rpc CreateCustomClass(CreateCustomClassRequest) returns (CustomClass)

Create a custom class.

Authorization scopes

Requires the following OAuth scope:

• https://www.googleapis.com/auth/cloud-platform

For more information, see theAuthentication Overview.

rpc CreatePhraseSet(CreatePhraseSetRequest) returns (PhraseSet)

Create a set of phrase hints. Each item in the set can be a single word or a multi-word phrase. The items in the PhraseSet are favored by the recognition model when you send a call that includes the PhraseSet.

Authorization scopes

Requires the following OAuth scope:

• https://www.googleapis.com/auth/cloud-platform

For more information, see theAuthentication Overview.

rpc DeleteCustomClass(DeleteCustomClassRequest) returns (Empty)

Delete a custom class.

Authorization scopes

Requires the following OAuth scope:

• https://www.googleapis.com/auth/cloud-platform

For more information, see theAuthentication Overview.

rpc DeletePhraseSet(DeletePhraseSetRequest) returns (Empty)

Delete a phrase set.

Authorization scopes

Requires the following OAuth scope:

• https://www.googleapis.com/auth/cloud-platform

For more information, see theAuthentication Overview.

rpc GetCustomClass(GetCustomClassRequest) returns (CustomClass)

Get a custom class.

Authorization scopes

Requires the following OAuth scope:

• https://www.googleapis.com/auth/cloud-platform

For more information, see theAuthentication Overview.

rpc GetPhraseSet(GetPhraseSetRequest) returns (PhraseSet)

Get a phrase set.

Authorization scopes

Requires the following OAuth scope:

• https://www.googleapis.com/auth/cloud-platform

For more information, see theAuthentication Overview.

rpc ListCustomClasses(ListCustomClassesRequest) returns (ListCustomClassesResponse)

List custom classes.

Authorization scopes

Requires the following OAuth scope:

• https://www.googleapis.com/auth/cloud-platform

For more information, see theAuthentication Overview.

rpc ListPhraseSet(ListPhraseSetRequest) returns (ListPhraseSetResponse)

List phrase sets.

Authorization scopes

Requires the following OAuth scope:

• https://www.googleapis.com/auth/cloud-platform

For more information, see theAuthentication Overview.

rpc UpdateCustomClass(UpdateCustomClassRequest) returns (CustomClass)

Update a custom class.

Authorization scopes

Requires the following OAuth scope:

• https://www.googleapis.com/auth/cloud-platform

For more information, see theAuthentication Overview.

rpc UpdatePhraseSet(UpdatePhraseSetRequest) returns (PhraseSet)

Update a phrase set.

Authorization scopes

Requires the following OAuth scope:

• https://www.googleapis.com/auth/cloud-platform

For more information, see theAuthentication Overview.

rpc LongRunningRecognize(LongRunningRecognizeRequest) returns (Operation)

Performs asynchronous speech recognition: receive results via the google.longrunning.Operations interface. Returns either anOperation.error or anOperation.response which contains aLongRunningRecognizeResponse message. For more information on asynchronous speech recognition, see thehow-to.

Authorization scopes

Requires the following OAuth scope:

• https://www.googleapis.com/auth/cloud-platform

For more information, see theAuthentication Overview.

rpc Recognize(RecognizeRequest) returns (RecognizeResponse)

Performs synchronous speech recognition: receive results after all audio has been sent and processed.

Authorization scopes

Requires the following OAuth scope:

• https://www.googleapis.com/auth/cloud-platform

For more information, see theAuthentication Overview.

rpc StreamingRecognize(StreamingRecognizeRequest) returns (StreamingRecognizeResponse)

Performs bidirectional streaming speech recognition: receive results while sending audio. This method is only available via the gRPC API (not REST).

Authorization scopes

Requires the following OAuth scope:

• https://www.googleapis.com/auth/cloud-platform

For more information, see theAuthentication Overview.

string

Required. The parent resource where this custom class will be created. Format:

projects/{project}/locations/{location}/customClasses

Speech-to-Text supports three locations:global,us (US North America), andeu (Europe). If you are calling thespeech.googleapis.com endpoint, use theglobal location. To specify a region, use aregional endpoint with matchingus oreu location value.

Authorization requires the followingIAM permission on the specified resourceparent:

• speech.customClasses.create

string

Required. The ID to use for the custom class, which will become the final component of the custom class' resource name.

This value should restrict to letters, numbers, and hyphens, with the first character a letter, the last a letter or a number, and be 4-63 characters.

CustomClass

Required. The custom class to create.

string

Required. The parent resource where this phrase set will be created. Format:

projects/{project}/locations/{location}

Speech-to-Text supports three locations:global,us (US North America), andeu (Europe). If you are calling thespeech.googleapis.com endpoint, use theglobal location. To specify a region, use aregional endpoint with matchingus oreu location value.

Authorization requires the followingIAM permission on the specified resourceparent:

• speech.phraseSets.create

string

Required. The ID to use for the phrase set, which will become the final component of the phrase set's resource name.

This value should restrict to letters, numbers, and hyphens, with the first character a letter, the last a letter or a number, and be 4-63 characters.

PhraseSet

Required. The phrase set to create.

string

The resource name of the custom class.

string

If this custom class is a resource, the custom_class_id is the resource id of the CustomClass. Case sensitive.

ClassItem

A collection of class items.

string

Output only. TheKMS key name with which the content of the ClassItem is encrypted. The expected format isprojects/{project}/locations/{location}/keyRings/{key_ring}/cryptoKeys/{crypto_key}.

string

Output only. TheKMS key version name with which content of the ClassItem is encrypted. The expected format isprojects/{project}/locations/{location}/keyRings/{key_ring}/cryptoKeys/{crypto_key}/cryptoKeyVersions/{crypto_key_version}.

string

Output only. System-assigned unique identifier for the CustomClass. This field is not used.

string

Output only. User-settable, human-readable name for the CustomClass. Must be 63 characters or less. This field is not used.

State

Output only. The CustomClass lifecycle state. This field is not used.

Timestamp

Output only. The time at which this resource was requested for deletion. This field is not used.

Timestamp

Output only. The time at which this resource will be purged. This field is not used.

map<string, string>

Output only. Allows users to store small amounts of arbitrary data. Both the key and the value must be 63 characters or less each. At most 100 annotations. This field is not used.

string

Output only. This checksum is computed by the server based on the value of other fields. This may be sent on update, undelete, and delete requests to ensure the client has an up-to-date value before proceeding. This field is not used.

bool

Output only. Whether or not this CustomClass is in the process of being updated. This field is not used.

string

The class item's value.

string

Required. The name of the custom class to delete. Format:

projects/{project}/locations/{location}/customClasses/{custom_class}

Speech-to-Text supports three locations:global,us (US North America), andeu (Europe). If you are calling thespeech.googleapis.com endpoint, use theglobal location. To specify a region, use aregional endpoint with matchingus oreu location value.

Authorization requires the followingIAM permission on the specified resourcename:

• speech.customClasses.delete

string

Required. The name of the phrase set to delete. Format:

projects/{project}/locations/{location}/phraseSets/{phrase_set}

Authorization requires the followingIAM permission on the specified resourcename:

• speech.phraseSets.delete

string

Required. The name of the custom class to retrieve. Format:

projects/{project}/locations/{location}/customClasses/{custom_class}

Authorization requires the followingIAM permission on the specified resourcename:

• speech.customClasses.get

string

Required. The name of the phrase set to retrieve. Format:

projects/{project}/locations/{location}/phraseSets/{phrase_set}

Speech-to-Text supports three locations:global,us (US North America), andeu (Europe). If you are calling thespeech.googleapis.com endpoint, use theglobal location. To specify a region, use aregional endpoint with matchingus oreu location value.

Authorization requires the followingIAM permission on the specified resourcename:

• speech.phraseSets.get

string

Required. The parent, which owns this collection of custom classes. Format:

projects/{project}/locations/{location}/customClasses

Speech-to-Text supports three locations:global,us (US North America), andeu (Europe). If you are calling thespeech.googleapis.com endpoint, use theglobal location. To specify a region, use aregional endpoint with matchingus oreu location value.

Authorization requires the followingIAM permission on the specified resourceparent:

• speech.customClasses.list

int32

The maximum number of custom classes to return. The service may return fewer than this value. If unspecified, at most 50 custom classes will be returned. The maximum value is 1000; values above 1000 will be coerced to 1000.

string

A page token, received from a previousListCustomClass call. Provide this to retrieve the subsequent page.

When paginating, all other parameters provided toListCustomClass must match the call that provided the page token.

CustomClass

The custom classes.

string

A token, which can be sent aspage_token to retrieve the next page. If this field is omitted, there are no subsequent pages.

string

Required. The parent, which owns this collection of phrase set. Format:

projects/{project}/locations/{location}

Speech-to-Text supports three locations:global,us (US North America), andeu (Europe). If you are calling thespeech.googleapis.com endpoint, use theglobal location. To specify a region, use aregional endpoint with matchingus oreu location value.

Authorization requires the followingIAM permission on the specified resourceparent:

• speech.phraseSets.list

int32

The maximum number of phrase sets to return. The service may return fewer than this value. If unspecified, at most 50 phrase sets will be returned. The maximum value is 1000; values above 1000 will be coerced to 1000.

string

A page token, received from a previousListPhraseSet call. Provide this to retrieve the subsequent page.

When paginating, all other parameters provided toListPhraseSet must match the call that provided the page token.

PhraseSet

The phrase set.

string

A token, which can be sent aspage_token to retrieve the next page. If this field is omitted, there are no subsequent pages.

int32

Approximate percentage of audio processed thus far. Guaranteed to be 100 when the audio is fully processed and the results are available.

Timestamp

Time when the request was received.

Timestamp

Time of the most recent processing update.

string

Output only. The URI of the audio file being transcribed. Empty if the audio was sent as byte content.

RecognitionConfig

Required. Provides information to the recognizer that specifies how to process the request.

RecognitionAudio

Required. The audio data to be recognized.

TranscriptOutputConfig

Optional. Specifies an optional destination for the recognition results.

SpeechRecognitionResult

Sequential list of transcription results corresponding to sequential portions of audio.

Duration

When available, billed audio seconds for the corresponding request.

TranscriptOutputConfig

Original output config if present in the request.

Status

If the transcript output fails this field contains the relevant error.

SpeechAdaptationInfo

Provides information on speech adaptation behavior in response

int64

The ID associated with the request. This is a unique ID specific only to the given request.

string

The resource name of the phrase set.

Phrase

A list of word and phrases.

float

Hint Boost. Positive value will increase the probability that a specific phrase will be recognized over other similar sounding phrases. The higher the boost, the higher the chance of false positive recognition as well. Negative boost values would correspond to anti-biasing. Anti-biasing is not enabled, so negative boost will simply be ignored. Thoughboost can accept a wide range of positive values, most use cases are best served with values between 0 (exclusive) and 20. We recommend using a binary search approach to finding the optimal value for your use case as well as adding phrases both with and without boost to your requests.

string

Output only. TheKMS key name with which the content of the PhraseSet is encrypted. The expected format isprojects/{project}/locations/{location}/keyRings/{key_ring}/cryptoKeys/{crypto_key}.

string

Output only. TheKMS key version name with which content of the PhraseSet is encrypted. The expected format isprojects/{project}/locations/{location}/keyRings/{key_ring}/cryptoKeys/{crypto_key}/cryptoKeyVersions/{crypto_key_version}.

string

Output only. System-assigned unique identifier for the PhraseSet. This field is not used.

string

Output only. User-settable, human-readable name for the PhraseSet. Must be 63 characters or less. This field is not used.

State

Output only. The CustomClass lifecycle state. This field is not used.

Timestamp

Output only. The time at which this resource was requested for deletion. This field is not used.

Timestamp

Output only. The time at which this resource will be purged. This field is not used.

map<string, string>

Output only. Allows users to store small amounts of arbitrary data. Both the key and the value must be 63 characters or less each. At most 100 annotations. This field is not used.

string

Output only. This checksum is computed by the server based on the value of other fields. This may be sent on update, undelete, and delete requests to ensure the client has an up-to-date value before proceeding. This field is not used.

bool

Output only. Whether or not this PhraseSet is in the process of being updated. This field is not used.

string

The phrase itself.

float

Hint Boost. Overrides the boost set at the phrase set level. Positive value will increase the probability that a specific phrase will be recognized over other similar sounding phrases. The higher the boost, the higher the chance of false positive recognition as well. Negative boost will simply be ignored. Thoughboost can accept a wide range of positive values, most use cases are best served with values between 0 and 20. We recommend using a binary search approach to finding the optimal value for your use case as well as adding phrases both with and without boost to your requests.

bytes

The audio data bytes encoded as specified inRecognitionConfig. Note: as with all bytes fields, proto buffers use a pure binary representation, whereas JSON representations use base64.

string

URI that points to a file that contains audio data bytes as specified inRecognitionConfig. The file must not be compressed (for example, gzip). Currently, only Google Cloud Storage URIs are supported, which must be specified in the following format:gs://bucket_name/object_name (other URI formats returngoogle.rpc.Code.INVALID_ARGUMENT). For more information, seeRequest URIs.

AudioEncoding

Encoding of audio data sent in allRecognitionAudio messages. This field is optional forFLAC andWAV audio files and required for all other audio formats. For details, seeAudioEncoding.

int32

Sample rate in Hertz of the audio data sent in allRecognitionAudio messages. Valid values are: 8000-48000. 16000 is optimal. For best results, set the sampling rate of the audio source to 16000 Hz. If that's not possible, use the native sample rate of the audio source (instead of re-sampling). This field is optional for FLAC and WAV audio files, but is required for all other audio formats. For details, seeAudioEncoding.

int32

The number of channels in the input audio data. ONLY set this for MULTI-CHANNEL recognition. Valid values for LINEAR16, OGG_OPUS and FLAC are1-8. Valid value for MULAW, AMR, AMR_WB and SPEEX_WITH_HEADER_BYTE is only1. If0 or omitted, defaults to one channel (mono). Note: We only recognize the first channel by default. To perform independent recognition on each channel setenable_separate_recognition_per_channel to 'true'.

bool

This needs to be set totrue explicitly andaudio_channel_count > 1 to get each channel recognized separately. The recognition result will contain achannel_tag field to state which channel that result belongs to. If this is not true, we will only recognize the first channel. The request is billed cumulatively for all channels recognized:audio_channel_count multiplied by the length of the audio.

string

Required. The language of the supplied audio as aBCP-47 language tag. Example: "en-US". SeeLanguage Support for a list of the currently supported language codes.

string

A list of up to 3 additionalBCP-47 language tags, listing possible alternative languages of the supplied audio. SeeLanguage Support for a list of the currently supported language codes. If alternative languages are listed, recognition result will contain recognition in the most likely language detected including the main language_code. The recognition result will include the language tag of the language detected in the audio. Note: This feature is only supported for Voice Command and Voice Search use cases and performance may vary for other use cases (e.g., phone call transcription).

int32

Maximum number of recognition hypotheses to be returned. Specifically, the maximum number ofSpeechRecognitionAlternative messages within eachSpeechRecognitionResult. The server may return fewer thanmax_alternatives. Valid values are0-30. A value of0 or1 will return a maximum of one. If omitted, will return a maximum of one.

bool

If set totrue, the server will attempt to filter out profanities, replacing all but the initial character in each filtered word with asterisks, e.g. "f***". If set tofalse or omitted, profanities won't be filtered out.

SpeechAdaptation

Speech adaptation configuration improves the accuracy of speech recognition. For more information, see thespeech adaptation documentation. When speech adaptation is set it supersedes thespeech_contexts field.

TranscriptNormalization

Optional. Use transcription normalization to automatically replace parts of the transcript with phrases of your choosing. For StreamingRecognize, this normalization only applies to stable partial transcripts (stability > 0.8) and final transcripts.

SpeechContext

Array ofSpeechContext. A means to provide context to assist the speech recognition. For more information, seespeech adaptation.

bool

Iftrue, the top result includes a list of words and the start and end time offsets (timestamps) for those words. Iffalse, no word-level time offset information is returned. The default isfalse.

bool

Iftrue, the top result includes a list of words and the confidence for those words. Iffalse, no word-level confidence information is returned. The default isfalse.

bool

If 'true', adds punctuation to recognition result hypotheses. This feature is only available in select languages. Setting this for requests in other languages has no effect at all. The default 'false' value does not add punctuation to result hypotheses.

BoolValue

The spoken punctuation behavior for the call If not set, uses default behavior based on model of choice e.g. command_and_search will enable spoken punctuation by default If 'true', replaces spoken punctuation with the corresponding symbols in the request. For example, "how are you question mark" becomes "how are you?". Seehttps://cloud.google.com/speech-to-text/docs/spoken-punctuation for support. If 'false', spoken punctuation is not replaced.

BoolValue

The spoken emoji behavior for the call If not set, uses default behavior based on model of choice If 'true', adds spoken emoji formatting for the request. This will replace spoken emojis with the corresponding Unicode symbols in the final transcript. If 'false', spoken emojis are not replaced.

SpeakerDiarizationConfig

Config to enable speaker diarization and set additional parameters to make diarization better suited for your application. Note: When this is enabled, we send all the words from the beginning of the audio for the top alternative in every consecutive STREAMING responses. This is done in order to improve our speaker tags as our models learn to identify the speakers in the conversation over time. For non-streaming requests, the diarization results will be provided only in the top alternative of the FINAL SpeechRecognitionResult.

RecognitionMetadata

Metadata regarding this request.

string

Which model to select for the given request. Select the model best suited to your domain to get best results. If a model is not explicitly specified, then we auto-select a model based on the parameters in the RecognitionConfig.

bool

Set to true to use an enhanced model for speech recognition. Ifuse_enhanced is set to true and themodel field is not set, then an appropriate enhanced model is chosen if an enhanced model exists for the audio.

Ifuse_enhanced is true and an enhanced version of the specified model does not exist, then the speech is recognized using the standard version of the specified model.

InteractionType

The use case most closely describing the audio content to be recognized.

uint32

The industry vertical to which this speech recognition request most closely applies. This is most indicative of the topics contained in the audio. Use the 6-digit NAICS code to identify the industry vertical - seehttps://www.naics.com/search/.

MicrophoneDistance

The audio type that most closely describes the audio being recognized.

OriginalMediaType

The original media the speech was recorded on.

RecordingDeviceType

The type of device the speech was recorded with.

string

The device used to make the recording. Examples 'Nexus 5X' or 'Polycom SoundStation IP 6000' or 'POTS' or 'VoIP' or 'Cardioid Microphone'.

string

Mime type of the original audio file. For exampleaudio/m4a,audio/x-alaw-basic,audio/mp3,audio/3gpp. A list of possible audio mime types is maintained athttp://www.iana.org/assignments/media-types/media-types.xhtml#audio

string

Description of the content. Eg. "Recordings of federal supreme court hearings from 2012".

RecognitionConfig

Required. Provides information to the recognizer that specifies how to process the request.

RecognitionAudio

Required. The audio data to be recognized.

SpeechRecognitionResult

Sequential list of transcription results corresponding to sequential portions of audio.

Duration

When available, billed audio seconds for the corresponding request.

SpeechAdaptationInfo

Provides information on adaptation behavior in response

int64

The ID associated with the request. This is a unique ID specific only to the given request.

bool

Whether request used legacy asr models (was not automatically migrated to use conformer models).

bool

If 'true', enables speaker detection for each recognized word in the top alternative of the recognition result using a speaker_label provided in the WordInfo.

int32

Minimum number of speakers in the conversation. This range gives you more flexibility by allowing the system to automatically determine the correct number of speakers. If not set, the default value is 2.

int32

Maximum number of speakers in the conversation. This range gives you more flexibility by allowing the system to automatically determine the correct number of speakers. If not set, the default value is 6.

int32

PhraseSet

A collection of phrase sets. To specify the hints inline, leave the phrase set'sname blank and fill in the rest of its fields. Any phrase set can use any custom class.

string

A collection of phrase set resource names to use.

CustomClass

A collection of custom classes. To specify the classes inline, leave the class'name blank and fill in the rest of its fields, giving it a uniquecustom_class_id. Refer to the inline defined class in phrase hints by itscustom_class_id.

ABNFGrammar

Augmented Backus-Naur form (ABNF) is a standardized grammar notation comprised by a set of derivation rules. See specifications:https://www.w3.org/TR/speech-grammar

string

All declarations and rules of an ABNF grammar broken up into multiple strings that will end up concatenated.

bool

Whether there was a timeout when applying speech adaptation. If true, adaptation had no effect in the response transcript.

string

If set, returns a message specifying which part of the speech adaptation request timed out.

string

A list of strings containing words and phrases "hints" so that the speech recognition is more likely to recognize them. This can be used to improve the accuracy for specific words and phrases, for example, if specific commands are typically spoken by the user. This can also be used to add additional words to the vocabulary of the recognizer. Seeusage limits.

List items can also be set to classes for groups of words that represent common concepts that occur in natural language. For example, rather than providing phrase hints for every month of the year, using the $MONTH class improves the likelihood of correctly transcribing audio that includes months.

float

Hint Boost. Positive value will increase the probability that a specific phrase will be recognized over other similar sounding phrases. The higher the boost, the higher the chance of false positive recognition as well. Negative boost values would correspond to anti-biasing. Anti-biasing is not enabled, so negative boost will simply be ignored. Thoughboost can accept a wide range of positive values, most use cases are best served with values between 0 and 20. We recommend using a binary search approach to finding the optimal value for your use case.

string

Transcript text representing the words that the user spoke. In languages that use spaces to separate words, the transcript might have a leading space if it isn't the first result. You can concatenate each result to obtain the full transcript without using a separator.

float

The confidence estimate between 0.0 and 1.0. A higher number indicates an estimated greater likelihood that the recognized words are correct. This field is set only for the top alternative of a non-streaming result or, of a streaming result whereis_final=true. This field is not guaranteed to be accurate and users should not rely on it to be always provided. The default of 0.0 is a sentinel value indicatingconfidence was not set.

WordInfo

A list of word-specific information for each recognized word. Note: Whenenable_speaker_diarization is true, you will see all the words from the beginning of the audio.

SpeechRecognitionAlternative

May contain one or more recognition hypotheses (up to the maximum specified inmax_alternatives). These alternatives are ordered in terms of accuracy, with the top (first) alternative being the most probable, as ranked by the recognizer.

int32

For multi-channel audio, this is the channel number corresponding to the recognized result for the audio from that channel. For audio_channel_count = N, its output values can range from '1' to 'N'.

Duration

Time offset of the end of this result relative to the beginning of the audio.

string

Output only. TheBCP-47 language tag of the language in this result. This language code was detected to have the most likelihood of being spoken in the audio.

RecognitionConfig

Required. Provides information to the recognizer that specifies how to process the request.

bool

Iffalse or omitted, the recognizer will perform continuous recognition (continuing to wait for and process audio even if the user pauses speaking) until the client closes the input stream (gRPC API) or until the maximum time limit has been reached. May return multipleStreamingRecognitionResults with theis_final flag set totrue.

Iftrue, the recognizer will detect a single spoken utterance. When it detects that the user has paused or stopped speaking, it will return anEND_OF_SINGLE_UTTERANCE event and cease recognition. It will return no more than oneStreamingRecognitionResult with theis_final flag set totrue.

Thesingle_utterance field can only be used with specified models, otherwise an error is thrown. Themodel field inRecognitionConfig must be set to:

• command_and_search
• phone_call AND additional fielduseEnhanced=true
• Themodel field is left undefined. In this case the API auto-selects a model based on any other parameters that you set inRecognitionConfig.

bool

Iftrue, interim results (tentative hypotheses) may be returned as they become available (these interim results are indicated with theis_final=false flag). Iffalse or omitted, onlyis_final=true result(s) are returned.

bool

Iftrue, responses with voice activity speech events will be returned as they are detected.

VoiceActivityTimeout

If set, the server will automatically close the stream after the specified duration has elapsed after the last VOICE_ACTIVITY speech event has been sent. The fieldvoice_activity_events must also be set to true.

Duration

Duration to timeout the stream if no speech begins.

Duration

Duration to timeout the stream after speech ends.

SpeechRecognitionAlternative

May contain one or more recognition hypotheses (up to the maximum specified inmax_alternatives). These alternatives are ordered in terms of accuracy, with the top (first) alternative being the most probable, as ranked by the recognizer.

bool

Iffalse, thisStreamingRecognitionResult represents an interim result that may change. Iftrue, this is the final time the speech service will return this particularStreamingRecognitionResult, the recognizer will not return any further hypotheses for this portion of the transcript and corresponding audio.

float

An estimate of the likelihood that the recognizer will not change its guess about this interim result. Values range from 0.0 (completely unstable) to 1.0 (completely stable). This field is only provided for interim results (is_final=false). The default of 0.0 is a sentinel value indicatingstability was not set.

Duration

Time offset of the end of this result relative to the beginning of the audio.

int32

For multi-channel audio, this is the channel number corresponding to the recognized result for the audio from that channel. For audio_channel_count = N, its output values can range from '1' to 'N'.

string

Output only. TheBCP-47 language tag of the language in this result. This language code was detected to have the most likelihood of being spoken in the audio.

StreamingRecognitionConfig

Provides information to the recognizer that specifies how to process the request. The firstStreamingRecognizeRequest message must contain astreaming_config message.

bytes

The audio data to be recognized. Sequential chunks of audio data are sent in sequentialStreamingRecognizeRequest messages. The firstStreamingRecognizeRequest message must not containaudio_content data and all subsequentStreamingRecognizeRequest messages must containaudio_content data. The audio bytes must be encoded as specified inRecognitionConfig. Note: as with all bytes fields, proto buffers use a pure binary representation (not base64). Seecontent limits.

Status

If set, returns agoogle.rpc.Status message that specifies the error for the operation.

StreamingRecognitionResult

This repeated list contains zero or more results that correspond to consecutive portions of the audio currently being processed. It contains zero or oneis_final=true result (the newly settled portion), followed by zero or moreis_final=false results (the interim results).

SpeechEventType

Indicates the type of speech event.

Duration

Time offset between the beginning of the audio and event emission.

Duration

When available, billed audio seconds for the stream. Set only if this is the last response in the stream.

SpeechAdaptationInfo

Provides information on adaptation behavior in response

int64

The ID associated with the request. This is a unique ID specific only to the given request.

Entry

A list of replacement entries. We will perform replacement with one entry at a time. For example, the second entry in ["cat" => "dog", "mountain cat" => "mountain dog"] will never be applied because we will always process the first entry before it. At most 100 entries.

string

What to replace. Max length is 100 characters.

string

What to replace with. Max length is 100 characters.

bool

Whether the search is case sensitive.

Union fieldoutput_type.

output_type can be only one of the following:

string

Specifies a Cloud Storage URI for the recognition results. Must be specified in the format:gs://bucket_name/object_name, and the bucket must already exist.

CustomClass

Required. The custom class to update.

The custom class'sname field is used to identify the custom class to be updated. Format:

projects/{project}/locations/{location}/customClasses/{custom_class}

Speech-to-Text supports three locations:global,us (US North America), andeu (Europe). If you are calling thespeech.googleapis.com endpoint, use theglobal location. To specify a region, use aregional endpoint with matchingus oreu location value.

Authorization requires the followingIAM permission on the specified resourcecustomClass:

• speech.customClasses.update

FieldMask

The list of fields to be updated.

PhraseSet

Required. The phrase set to update.

The phrase set'sname field is used to identify the set to be updated. Format:

projects/{project}/locations/{location}/phraseSets/{phrase_set}

Speech-to-Text supports three locations:global,us (US North America), andeu (Europe). If you are calling thespeech.googleapis.com endpoint, use theglobal location. To specify a region, use aregional endpoint with matchingus oreu location value.

Authorization requires the followingIAM permission on the specified resourcephraseSet:

• speech.phraseSets.update

FieldMask

The list of fields to be updated.

Duration

Time offset relative to the beginning of the audio, and corresponding to the start of the spoken word. This field is only set ifenable_word_time_offsets=true and only in the top hypothesis. This is an experimental feature and the accuracy of the time offset can vary.

Duration

Time offset relative to the beginning of the audio, and corresponding to the end of the spoken word. This field is only set ifenable_word_time_offsets=true and only in the top hypothesis. This is an experimental feature and the accuracy of the time offset can vary.

string

The word corresponding to this set of information.

float

The confidence estimate between 0.0 and 1.0. A higher number indicates an estimated greater likelihood that the recognized words are correct. This field is set only for the top alternative of a non-streaming result or, of a streaming result whereis_final=true. This field is not guaranteed to be accurate and users should not rely on it to be always provided. The default of 0.0 is a sentinel value indicatingconfidence was not set.

int32

string

Output only. A label value assigned for every unique speaker within the audio. This field specifies which speaker was detected to have spoken this word. For some models, like medical_conversation this can be actual speaker role, for example "patient" or "provider", but generally this would be a number identifying a speaker. This field is only set if enable_speaker_diarization = 'true' and only for the top alternative.