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Companding implies that there is a decompression operation, whereas compression implies that it is lossy compression and the final product, which is just used to compress in a way that cannot be restored, which can be used for effect in a DAW, or to reduce file size. Though linear companding is lossy, it's still called companding because there's a basic ...


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Companding is used when you want a signal to noise ratio (SNR) that's largely independent of the signal level. Quantization noise is constant, so if the signal level varies, so does the SNR. Let's consider an audio signal that's quantized at 8 bit. The quantization noise sits at -53dBFS. If you have a loud signal, i.e. -10dBFS you have a healthy 43 dB SNR. ...


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