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You know, all modern audio codecs bit rate modes are VBR, even if you restrict the settings to for example: MP3 128 CBR, the encoded result is between 120 to 135 ( a bit different with different encoders). Even lossless codecs like FLAC bit rate is vbr. What about PCM? Is this same?
Mike
Posted 2015-05-14T18:43:40.207
Reputation: 1
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PCM (Pulse Code Modulation) is not a Variable Bit Rate. ADPCM (Adaptive Digital PCM) is variable, but I don't know of any music applications that use ADPCM. ADPCM has a higher bit-rate for the sine wave peaks, so it isn't used for high dynamic range applications like music, mostly voice. WAV is linear with a 16-bit word (same as music CDs), which allows for 96 db. of dynamic range.
BillDOe
Posted 2015-05-14T18:43:40.207
Reputation: 1 413
WAV & AIF are the audio equivalent of a bitmap, one bit per bit. – Tetsujin – 2015-05-14T18:46:56.247