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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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."],[[["The latest version of the Google.Cloud.TextToSpeech.V1 library is 3.10.0, with multiple prior versions available, ranging down to 2.2.0."],["The library's `AudioEncoding` enum provides options for configuring the audio encoder, determining the desired output audio format, with an unspecified field that will return an error."],["Supported audio encoding formats include `Alaw`, `Linear16`, `Mp3`, `Mulaw`, and `OggOpus`, each with specific characteristics such as bit depth, compression, and header information."],["`OggOpus` encoding offers higher quality than MP3 at similar bitrates and is compatible with Android and common web browsers."]]],[]]
