// Configuration to enable speaker diarization.

message SpeakerDiarizationConfig {

// Required. 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.

//

// To fix the number of speakers detected in the audio, set

// `min_speaker_count` = `max_speaker_count`.

int32 min_speaker_count = 2 [(google.api.field_behavior) = REQUIRED];

// Required. Maximum number of speakers in the conversation. Valid values are:

// 1-6. Must be >= `min_speaker_count`. This range gives you more flexibility

// by allowing the system to automatically determine the correct number of

// speakers.

int32 max_speaker_count = 3 [(google.api.field_behavior) = REQUIRED];

// Optional. The system automatically determines the number of speakers. This

// value is not currently used.

int32 min_speaker_count = 2 [(google.api.field_behavior) = OPTIONAL];

// Optional. The system automatically determines the number of speakers. This

// value is not currently used.

int32 max_speaker_count = 3 [(google.api.field_behavior) = OPTIONAL];

}

// Configuration to enable custom prompt in chirp3.

message CustomPromptConfig {

// Optional. The custom instructions to override the existing instructions for

// chirp3.

string custom_prompt = 1 [(google.api.field_behavior) = OPTIONAL];

}

// Available recognition features.

// Mode for recognizing multi-channel audio.

MultiChannelMode multi_channel_mode = 17;

// Configuration to enable speaker diarization and set additional

// parameters to make diarization better suited for your application.

// 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.

// Configuration to enable speaker diarization. To enable diarization, set

// this field to an empty SpeakerDiarizationConfig message.

SpeakerDiarizationConfig diarization_config = 9;

// Maximum number of recognition hypotheses to be returned.

// 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.

int32 max_alternatives = 16;

// Optional. Configuration to enable custom prompt for chirp3.

CustomPromptConfig custom_prompt_config = 18

[(google.api.field_behavior) = OPTIONAL];

}

// Transcription normalization configuration. Use transcription normalization

// When available, billed audio seconds for the corresponding request.

google.protobuf.Duration total_billed_duration = 6;

// Optional. Output only. Provides the prompt used for the recognition

// request.

optional string prompt = 10 [

(google.api.field_behavior) = OUTPUT_ONLY,

(google.api.field_behavior) = OPTIONAL

];

}

// Alternative hypotheses (a.k.a. n-best list).