Uncompressed 16-bit signed little-endian samples (Linear PCM).
Audio content returned as LINEAR16 also contains a WAV header.
Mp3
MP3 audio at 32kbps.
Mp364Kbps
MP3 audio at 64kbps.
Mulaw
8-bit samples that compand 14-bit audio samples using G.711 PCMU/mu-law.
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.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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 provides documentation for the \u003ccode\u003eOutputAudioEncoding\u003c/code\u003e enum within the \u003ccode\u003eGoogle.Cloud.Dialogflow.Cx.V3\u003c/code\u003e namespace, detailing various versions of the API.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version of \u003ccode\u003eOutputAudioEncoding\u003c/code\u003e available is 2.23.0, but multiple prior versions are also accessible, going back as far as 1.0.0.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eOutputAudioEncoding\u003c/code\u003e enum defines different audio encoding formats for Text-To-Speech, including \u003ccode\u003eLinear16\u003c/code\u003e, \u003ccode\u003eMp3\u003c/code\u003e, \u003ccode\u003eMp364Kbps\u003c/code\u003e, \u003ccode\u003eMulaw\u003c/code\u003e, \u003ccode\u003eOggOpus\u003c/code\u003e, and \u003ccode\u003eUnspecified\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eEach encoding format is associated with a specific description, like \u003ccode\u003eLinear16\u003c/code\u003e being uncompressed 16-bit signed little-endian samples, or \u003ccode\u003eOggOpus\u003c/code\u003e being Opus encoded audio with higher quality than MP3.\u003c/p\u003e\n"]]],[],null,[]]
