Uncompressed 16-bit signed little-endian samples (Linear PCM).
Audio content returned as LINEAR16 also contains a WAV header.
Mp3
MP3 audio at 32kbps.
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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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\u003eThe latest version of the Google.Cloud.TextToSpeech.V1 library is 3.10.0, with accessible documentation for versions ranging back to 2.2.0.\u003c/p\u003e\n"],["\u003cp\u003eThis content focuses on the \u003ccode\u003eAudioEncoding\u003c/code\u003e enum, which defines the available audio output formats for the Text-to-Speech API.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eAudioEncoding\u003c/code\u003e enum supports \u003ccode\u003eLinear16\u003c/code\u003e (uncompressed 16-bit PCM), \u003ccode\u003eMp3\u003c/code\u003e (32kbps), and \u003ccode\u003eOggOpus\u003c/code\u003e (Opus encoded in an Ogg container) audio formats.\u003c/p\u003e\n"],["\u003cp\u003eAn \u003ccode\u003eUnspecified\u003c/code\u003e field is included within the \u003ccode\u003eAudioEncoding\u003c/code\u003e enum, and it results in an invalid argument error if used.\u003c/p\u003e\n"]]],[],null,[]]
