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RE: 20-bit processing

There is *no such thing* as 24-bit ADCs. You should know this. The last four bits on a (24-bit) ladder are not functional.

Most of the newest converters use delta-sigma modulators running at a very high oversampling rate and a bit depth around 4 to 8 bits. These have sufficient performance in the audio range that their performance is somewhat constrained by the 24 bit word length. Similarly on DACs. Accordingly, manufacturers are beginning to offer 32 bit converters. It is fair to say that the low order bits of a 24 bit converter are functional, albeit less functional and certainly less important than the higher order bits.

"Finally, with intermediate calculations being done on a 20-bit - not 16 bit - capture, we shouldn't have to dither/noise-shape.

This statement is simply false and demonstrates both practical and theoretical ignorance.

Tony Lauck

"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar

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