Cloud Speech V1 Client - Class RecognitionConfig (1.10.0)

Reference documentation and code samples for the Cloud Speech V1 Client class RecognitionConfig.

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

Generated from protobuf message google.cloud.speech.v1.RecognitionConfig

Methods

__construct

Constructor.

Parameters
NameDescription
data array

Optional. Data for populating the Message object.

↳ encoding int

Encoding of audio data sent in all RecognitionAudio messages. This field is optional for FLAC and WAV audio files and required for all other audio formats. For details, see AudioEncoding.

↳ sample_rate_hertz int

Sample rate in Hertz of the audio data sent in all RecognitionAudio 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, see AudioEncoding.

↳ audio_channel_count int

The number of channels in the input audio data. ONLY set this for MULTI-CHANNEL recognition. Valid values for LINEAR16, OGG_OPUS and FLAC are 1-8. Valid value for MULAW, AMR, AMR_WB and SPEEX_WITH_HEADER_BYTE is only 1. If 0 or omitted, defaults to one channel (mono). Note: We only recognize the first channel by default. To perform independent recognition on each channel set enable_separate_recognition_per_channel to 'true'.

↳ enable_separate_recognition_per_channel bool

This needs to be set to true explicitly and audio_channel_count > 1 to get each channel recognized separately. The recognition result will contain a channel_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.

↳ language_code string

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

↳ alternative_language_codes array

A list of up to 3 additional BCP-47 language tags, listing possible alternative languages of the supplied audio. See Language 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).

↳ max_alternatives int

Maximum number of recognition hypotheses to be returned. Specifically, the maximum number of SpeechRecognitionAlternative messages within each SpeechRecognitionResult. The server may return fewer than max_alternatives. Valid values are 0-30. A value of 0 or 1 will return a maximum of one. If omitted, will return a maximum of one.

↳ profanity_filter bool

If set to true, 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 to false or omitted, profanities won't be filtered out.

↳ adaptation Google\Cloud\Speech\V1\SpeechAdaptation

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

↳ speech_contexts array<Google\Cloud\Speech\V1\SpeechContext>

Array of SpeechContext. A means to provide context to assist the speech recognition. For more information, see speech adaptation.

↳ enable_word_time_offsets bool

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

↳ enable_word_confidence bool

If true, the top result includes a list of words and the confidence for those words. If false, no word-level confidence information is returned. The default is false.

↳ enable_automatic_punctuation 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.

↳ enable_spoken_punctuation Google\Protobuf\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?". See https://cloud.google.com/speech-to-text/docs/spoken-punctuation for support. If 'false', spoken punctuation is not replaced.

↳ enable_spoken_emojis Google\Protobuf\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.

↳ diarization_config Google\Cloud\Speech\V1\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.

↳ metadata Google\Cloud\Speech\V1\RecognitionMetadata

Metadata regarding this request.

↳ model 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.

ModelDescription
latest_longBest for long form content like media or conversation.
latest_shortBest for short form content like commands or single shot directed speech.
command_and_searchBest for short queries such as voice commands or voice search.
phone_callBest for audio that originated from a phone call (typically recorded at an 8khz sampling rate).
videoBest for audio that originated from video or includes multiple speakers. Ideally the audio is recorded at a 16khz or greater sampling rate. This is a premium model that costs more than the standard rate.
defaultBest for audio that is not one of the specific audio models. For example, long-form audio. Ideally the audio is high-fidelity, recorded at a 16khz or greater sampling rate.
medical_conversationBest for audio that originated from a conversation between a medical provider and patient.
medical_dictationBest for audio that originated from dictation notes by a medical provider.

↳ use_enhanced bool

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

getEncoding

Encoding of audio data sent in all RecognitionAudio messages.

This field is optional for FLAC and WAV audio files and required for all other audio formats. For details, see AudioEncoding.

Returns
TypeDescription
int

setEncoding

Encoding of audio data sent in all RecognitionAudio messages.

This field is optional for FLAC and WAV audio files and required for all other audio formats. For details, see AudioEncoding.

Parameter
NameDescription
var int
Returns
TypeDescription
$this

getSampleRateHertz

Sample rate in Hertz of the audio data sent in all RecognitionAudio 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, see AudioEncoding.

Returns
TypeDescription
int

setSampleRateHertz

Sample rate in Hertz of the audio data sent in all RecognitionAudio 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, see AudioEncoding.

Parameter
NameDescription
var int
Returns
TypeDescription
$this

getAudioChannelCount

The number of channels in the input audio data.

ONLY set this for MULTI-CHANNEL recognition. Valid values for LINEAR16, OGG_OPUS and FLAC are 1-8. Valid value for MULAW, AMR, AMR_WB and SPEEX_WITH_HEADER_BYTE is only 1. If 0 or omitted, defaults to one channel (mono). Note: We only recognize the first channel by default. To perform independent recognition on each channel set enable_separate_recognition_per_channel to 'true'.

Returns
TypeDescription
int

setAudioChannelCount

The number of channels in the input audio data.

ONLY set this for MULTI-CHANNEL recognition. Valid values for LINEAR16, OGG_OPUS and FLAC are 1-8. Valid value for MULAW, AMR, AMR_WB and SPEEX_WITH_HEADER_BYTE is only 1. If 0 or omitted, defaults to one channel (mono). Note: We only recognize the first channel by default. To perform independent recognition on each channel set enable_separate_recognition_per_channel to 'true'.

Parameter
NameDescription
var int
Returns
TypeDescription
$this

getEnableSeparateRecognitionPerChannel

This needs to be set to true explicitly and audio_channel_count > 1 to get each channel recognized separately. The recognition result will contain a channel_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.

Returns
TypeDescription
bool

setEnableSeparateRecognitionPerChannel

This needs to be set to true explicitly and audio_channel_count > 1 to get each channel recognized separately. The recognition result will contain a channel_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.

Parameter
NameDescription
var bool
Returns
TypeDescription
$this

getLanguageCode

Required. The language of the supplied audio as a BCP-47 language tag.

Example: "en-US". See Language Support for a list of the currently supported language codes.

Returns
TypeDescription
string

setLanguageCode

Required. The language of the supplied audio as a BCP-47 language tag.

Example: "en-US". See Language Support for a list of the currently supported language codes.

Parameter
NameDescription
var string
Returns
TypeDescription
$this

getAlternativeLanguageCodes

A list of up to 3 additional BCP-47 language tags, listing possible alternative languages of the supplied audio.

See Language 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).

Returns
TypeDescription
Google\Protobuf\Internal\RepeatedField

setAlternativeLanguageCodes

A list of up to 3 additional BCP-47 language tags, listing possible alternative languages of the supplied audio.

See Language 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).

Parameter
NameDescription
var string[]
Returns
TypeDescription
$this

getMaxAlternatives

Maximum number of recognition hypotheses to be returned.

Specifically, the maximum number of SpeechRecognitionAlternative messages within each SpeechRecognitionResult. The server may return fewer than max_alternatives. Valid values are 0-30. A value of 0 or 1 will return a maximum of one. If omitted, will return a maximum of one.

Returns
TypeDescription
int

setMaxAlternatives

Maximum number of recognition hypotheses to be returned.

Specifically, the maximum number of SpeechRecognitionAlternative messages within each SpeechRecognitionResult. The server may return fewer than max_alternatives. Valid values are 0-30. A value of 0 or 1 will return a maximum of one. If omitted, will return a maximum of one.

Parameter
NameDescription
var int
Returns
TypeDescription
$this

getProfanityFilter

If set to true, 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 to false or omitted, profanities won't be filtered out.

Returns
TypeDescription
bool

setProfanityFilter

If set to true, 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 to false or omitted, profanities won't be filtered out.

Parameter
NameDescription
var bool
Returns
TypeDescription
$this

getAdaptation

Speech adaptation configuration improves the accuracy of speech recognition. For more information, see the speech adaptation documentation.

When speech adaptation is set it supersedes the speech_contexts field.

Returns
TypeDescription
Google\Cloud\Speech\V1\SpeechAdaptation|null

hasAdaptation

clearAdaptation

setAdaptation

Speech adaptation configuration improves the accuracy of speech recognition. For more information, see the speech adaptation documentation.

When speech adaptation is set it supersedes the speech_contexts field.

Parameter
NameDescription
var Google\Cloud\Speech\V1\SpeechAdaptation
Returns
TypeDescription
$this

getSpeechContexts

Array of SpeechContext.

A means to provide context to assist the speech recognition. For more information, see speech adaptation.

Returns
TypeDescription
Google\Protobuf\Internal\RepeatedField

setSpeechContexts

Array of SpeechContext.

A means to provide context to assist the speech recognition. For more information, see speech adaptation.

Parameter
NameDescription
var array<Google\Cloud\Speech\V1\SpeechContext>
Returns
TypeDescription
$this

getEnableWordTimeOffsets

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

Returns
TypeDescription
bool

setEnableWordTimeOffsets

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

Parameter
NameDescription
var bool
Returns
TypeDescription
$this

getEnableWordConfidence

If true, the top result includes a list of words and the confidence for those words. If false, no word-level confidence information is returned. The default is false.

Returns
TypeDescription
bool

setEnableWordConfidence

If true, the top result includes a list of words and the confidence for those words. If false, no word-level confidence information is returned. The default is false.

Parameter
NameDescription
var bool
Returns
TypeDescription
$this

getEnableAutomaticPunctuation

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.

Returns
TypeDescription
bool

setEnableAutomaticPunctuation

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.

Parameter
NameDescription
var bool
Returns
TypeDescription
$this

getEnableSpokenPunctuation

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?". See https://cloud.google.com/speech-to-text/docs/spoken-punctuation for support. If 'false', spoken punctuation is not replaced.

Returns
TypeDescription
Google\Protobuf\BoolValue|null

hasEnableSpokenPunctuation

clearEnableSpokenPunctuation

getEnableSpokenPunctuationValue

Returns the unboxed value from getEnableSpokenPunctuation()

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?". See https://cloud.google.com/speech-to-text/docs/spoken-punctuation for support. If 'false', spoken punctuation is not replaced.

Returns
TypeDescription
bool|null

setEnableSpokenPunctuation

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?". See https://cloud.google.com/speech-to-text/docs/spoken-punctuation for support. If 'false', spoken punctuation is not replaced.

Parameter
NameDescription
var Google\Protobuf\BoolValue
Returns
TypeDescription
$this

setEnableSpokenPunctuationValue

Sets the field by wrapping a primitive type in a Google\Protobuf\BoolValue object.

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?". See https://cloud.google.com/speech-to-text/docs/spoken-punctuation for support. If 'false', spoken punctuation is not replaced.

Parameter
NameDescription
var bool|null
Returns
TypeDescription
$this

getEnableSpokenEmojis

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.

Returns
TypeDescription
Google\Protobuf\BoolValue|null

hasEnableSpokenEmojis

clearEnableSpokenEmojis

getEnableSpokenEmojisValue

Returns the unboxed value from getEnableSpokenEmojis()

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.

Returns
TypeDescription
bool|null

setEnableSpokenEmojis

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.

Parameter
NameDescription
var Google\Protobuf\BoolValue
Returns
TypeDescription
$this

setEnableSpokenEmojisValue

Sets the field by wrapping a primitive type in a Google\Protobuf\BoolValue object.

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.

Parameter
NameDescription
var bool|null
Returns
TypeDescription
$this

getDiarizationConfig

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.

Returns
TypeDescription
Google\Cloud\Speech\V1\SpeakerDiarizationConfig|null

hasDiarizationConfig

clearDiarizationConfig

setDiarizationConfig

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.

Parameter
NameDescription
var Google\Cloud\Speech\V1\SpeakerDiarizationConfig
Returns
TypeDescription
$this

getMetadata

Metadata regarding this request.

Returns
TypeDescription
Google\Cloud\Speech\V1\RecognitionMetadata|null

hasMetadata

clearMetadata

setMetadata

Metadata regarding this request.

Parameter
NameDescription
var Google\Cloud\Speech\V1\RecognitionMetadata
Returns
TypeDescription
$this

getModel

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.

ModelDescription
latest_longBest for long form content like media or conversation.
latest_shortBest for short form content like commands or single shot directed speech.
command_and_searchBest for short queries such as voice commands or voice search.
phone_callBest for audio that originated from a phone call (typically recorded at an 8khz sampling rate).
videoBest for audio that originated from video or includes multiple speakers. Ideally the audio is recorded at a 16khz or greater sampling rate. This is a premium model that costs more than the standard rate.
defaultBest for audio that is not one of the specific audio models. For example, long-form audio. Ideally the audio is high-fidelity, recorded at a 16khz or greater sampling rate.
medical_conversationBest for audio that originated from a conversation between a medical provider and patient.
medical_dictationBest for audio that originated from dictation notes by a medical provider.
Returns
TypeDescription
string

setModel

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.

ModelDescription
latest_longBest for long form content like media or conversation.
latest_shortBest for short form content like commands or single shot directed speech.
command_and_searchBest for short queries such as voice commands or voice search.
phone_callBest for audio that originated from a phone call (typically recorded at an 8khz sampling rate).
videoBest for audio that originated from video or includes multiple speakers. Ideally the audio is recorded at a 16khz or greater sampling rate. This is a premium model that costs more than the standard rate.
defaultBest for audio that is not one of the specific audio models. For example, long-form audio. Ideally the audio is high-fidelity, recorded at a 16khz or greater sampling rate.
medical_conversationBest for audio that originated from a conversation between a medical provider and patient.
medical_dictationBest for audio that originated from dictation notes by a medical provider.
Parameter
NameDescription
var string
Returns
TypeDescription
$this

getUseEnhanced

Set to true to use an enhanced model for speech recognition.

If use_enhanced is set to true and the model field is not set, then an appropriate enhanced model is chosen if an enhanced model exists for the audio. If use_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.

Returns
TypeDescription
bool

setUseEnhanced

Set to true to use an enhanced model for speech recognition.

If use_enhanced is set to true and the model field is not set, then an appropriate enhanced model is chosen if an enhanced model exists for the audio. If use_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.

Parameter
NameDescription
var bool
Returns
TypeDescription
$this