Audio encoding of the audio content sent in the conversational query
request. Refer to the Cloud Speech API
documentation <https://cloud.google.com/speech-to-text/docs/basics>__
for more details.
Enums
Name
Description
AUDIO_ENCODING_UNSPECIFIED
Not specified.
AUDIO_ENCODING_LINEAR_16
Uncompressed 16-bit signed little-endian samples (Linear PCM).
AUDIO_ENCODING_FLAC
```FLAC``
AUDIO_ENCODING_MULAW
8-bit samples that compand 14-bit audio samples using G.711 PCMU/mu-law.
AUDIO_ENCODING_AMR
Adaptive Multi-Rate Narrowband codec. `sample_rate_hertz` must be 8000.
AUDIO_ENCODING_AMR_WB
Adaptive Multi-Rate Wideband codec. `sample_rate_hertz` must be 16000.
AUDIO_ENCODING_OGG_OPUS
Opus encoded audio frames in Ogg container (`OggOpus
AUDIO_ENCODING_SPEEX_WITH_HEADER_BYTE
Although the use of lossy encodings is not recommended, if a very low bitrate encoding is required, `OGG_OPUS` is highly preferred over Speex encoding. The `Speex
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2026-03-31 UTC."],[],[]]
