Re: [LAD] Does noiseshaping affect quantisation noise? | Linuxaudio.org

Re: [LAD] Does noiseshaping affect quantisation noise?

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From: Jussi Laako <jussi@...>

To: <fons@...>

Cc: <linux-audio-dev@...>

Subject: Re: [LAD] Does noiseshaping affect quantisation noise?

Date: Sunday, June 13, 2010 - 10:30 am

On 06/08/2010 12:10 AM, fons@kokkinizita.net wrote:

quoted text

> quantisation noise, making the latter irrelevant. If your A/D
> converter is 24 bit, then analog noise will always dominate,
> so again quantisation noise is irrelevant.

IMO, the important part is that practically none of the modern
converters, especially "24-bit" (or more) ones do the conversion in the
presentation they express towards the outside world. That is the actual
converter is not PCM nor has 24-bit resolution.

Quite typical cheap converter is 2-bit 128fs SDM using pretty hefty
noise shaping...

Using PCM in general for digital signal representation is mostly just a
convenience causing unnecessary extra trouble elsewhere.
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Messages in current thread:

[LAD] Does noiseshaping affect quantisation noise?, Philipp, (Mon Jun 7, 8:41 pm)

Re: [LAD] Does noiseshaping affect quantisation noise?, Jussi Laako, (Sun Jun 13, 10:35 am)

Re: [LAD] Does noiseshaping affect quantisation noise?, , (Mon Jun 7, 9:15 pm)

Re: [LAD] Does noiseshaping affect quantisation noise?, Jussi Laako, (Sun Jun 13, 10:30 am)

Re: [LAD] Does noiseshaping affect quantisation noise?, Philipp Überbacher, (Tue Jun 8, 6:53 am)

Re: [LAD] Does noiseshaping affect quantisation noise?, , (Tue Jun 8, 10:13 am)

Re: [LAD] Does noiseshaping affect quantisation noise?, Philipp Überbacher, (Wed Jun 9, 2:31 pm)