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][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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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\u003eThe content provides documentation for the \u003ccode\u003eAudioEncoding\u003c/code\u003e enum within the Google Cloud Text-to-Speech v1 API, with version 3.9.0 being the current version on the page, and 3.10.0 the latest available.\u003c/p\u003e\n"],["\u003cp\u003eThis \u003ccode\u003eAudioEncoding\u003c/code\u003e enum is used to configure the output audio format, and is located in the \u003ccode\u003eGoogle.Cloud.TextToSpeech.V1\u003c/code\u003e namespace.\u003c/p\u003e\n"],["\u003cp\u003eSeveral audio encoding formats are supported, including \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 characteristics.\u003c/p\u003e\n"],["\u003cp\u003eThe enum also includes an \u003ccode\u003eUnspecified\u003c/code\u003e field which will result in an error if used, returning result \u003ccode\u003egoogle.rpc.Code.INVALID_ARGUMENT\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThere are older versions of the documentation available, going down to version 2.2.0.\u003c/p\u003e\n"]]],[],null,[]]
