WAV
An audio container format commonly used to store uncompressed PCM audio data, preserving complete sampling information and suited to archiving and professional audio processing.
Timeline (last 90 days)
Most TTS APIs return a raw audio stream (usually WAV), which can be converted or stored in a compressed format on the fly.
WAV is an uncompressed PCM format, lossless but with a huge file size, suitable for development and debugging; FLAC is a lossless compressed format, smaller than WAV but not widely supported enough on mobile.
Converting MP3 to WAV does not restore information that has already been discarded, and only yields a larger file rather than a higher-quality master.
WAV itself does not automatically mean better source quality, and microphone placement, background noise or clipping damage WAV and MP3 equally severely.
Taboo: recording in MP3 first and converting to WAV afterwards is a common mistake, because that conversion cannot restore information that has already been lost.
Trade-off: MP3 is more convenient for sending by email and quick listening on a phone, while WAV is more suitable when the most complete signal needs to be preserved.
Decision rule: for work that requires editing or sentence-by-sentence verification, uncompressed PCM WAV should be used as the master; when a lossless master is determined to be needed, it should be captured directly as WAV/PCM during recording rather than converted afterwards.
WAV is typically used as a container for uncompressed PCM audio, but WAV itself is only a container format that can also hold other encodings internally, so a .wav extension does not necessarily mean uncompressed.
Gemini now returns a complete WAV file directly, with a C2PA content credential appended after the audio data.
When processing binary audio, the first four bytes should be checked for "RIFF" to determine whether it is already a complete WAV file, so as to avoid wrapping an already complete WAV with a second WAV header, which causes playback noise.
All Facts (11)
FLAC的典型压缩率约为原始WAV文件的50-60%
90%UnverifiedMost TTS APIs return a raw audio stream (usually WAV), which can be converted or stored in a compressed format on the fly.
50%UnverifiedWAV is an uncompressed PCM format, lossless but with a huge file size, suitable for development and debugging; FLAC is a lossless compressed format, smaller than WAV but not widely supported enough on mobile.
50%UnverifiedWAV is typically used as a container for uncompressed PCM audio, but WAV itself is only a container format that can also hold other encodings internally, so a .wav extension does not necessarily mean uncompressed.
50%UnverifiedConverting MP3 to WAV does not restore information that has already been discarded, and only yields a larger file rather than a higher-quality master.
50%UnverifiedWAV itself does not automatically mean better source quality, and microphone placement, background noise or clipping damage WAV and MP3 equally severely.
50%UnverifiedDecision rule: for work that requires editing or sentence-by-sentence verification, uncompressed PCM WAV should be used as the master; when a lossless master is determined to be needed, it should be captured directly as WAV/PCM during recording rather than converted afterwards.
50%UnverifiedTaboo: recording in MP3 first and converting to WAV afterwards is a common mistake, because that conversion cannot restore information that has already been lost.
50%UnverifiedTrade-off: MP3 is more convenient for sending by email and quick listening on a phone, while WAV is more suitable when the most complete signal needs to be preserved.
50%UnverifiedGemini now returns a complete WAV file directly, with a C2PA content credential appended after the audio data.
50%UnverifiedWhen processing binary audio, the first four bytes should be checked for "RIFF" to determine whether it is already a complete WAV file, so as to avoid wrapping an already complete WAV with a second WAV header, which causes playback noise.
50%