8-bit samples that compand 14-bit audio samples using G.711 PCMU/A-law.
Audio content returned as ALAW also contains a WAV header.
Linear16
Uncompressed 16-bit signed little-endian samples (Linear PCM).
Audio content returned as LINEAR16 also contains a WAV header.
Mp3
MP3 audio at 32kbps.
Mulaw
8-bit samples that compand 14-bit audio samples using G.711 PCMU/mu-law.
Audio content returned as MULAW also contains a WAV header.
OggOpus
Opus encoded audio wrapped in an ogg container. The result will be a
file which can be played natively on Android, and in browsers (at least
Chrome and Firefox). The quality of the encoding is considerably higher
than MP3 while using approximately the same bitrate.
Unspecified
Not specified. Will return result [google.rpc.Code.INVALID_ARGUMENT][].
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThis webpage details the \u003ccode\u003eAudioEncoding\u003c/code\u003e enum within the \u003ccode\u003eGoogle.Cloud.TextToSpeech.V1\u003c/code\u003e namespace, used to configure audio output formats for text-to-speech.\u003c/p\u003e\n"],["\u003cp\u003eThe latest available version is 3.10.0, and several previous versions ranging from 2.2.0 to 3.9.0 are also documented on this page.\u003c/p\u003e\n"],["\u003cp\u003eSupported audio encoding formats include \u003ccode\u003eAlaw\u003c/code\u003e, \u003ccode\u003eLinear16\u003c/code\u003e, \u003ccode\u003eMp3\u003c/code\u003e, \u003ccode\u003eMulaw\u003c/code\u003e, and \u003ccode\u003eOggOpus\u003c/code\u003e, each with specific properties and use cases.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eUnspecified\u003c/code\u003e field indicates an invalid argument if selected, resulting in a \u003ccode\u003egoogle.rpc.Code.INVALID_ARGUMENT\u003c/code\u003e error.\u003c/p\u003e\n"]]],[],null,[]]
