Re: [linux-audio-dev] db gain controls.

From: Lee Revell <rlrevell@email-addr-hidden-job.com>
Date: Fri Dec 23 2005 - 04:32:27 EET

On Fri, 2005-12-23 at 03:00 +0100, David Kastrup wrote:
> James Courtier-Dutton <James@email-addr-hidden> writes:
>
> > Hi,
> >
> > I have a question for some audio professionals out there.
> > What is the smallest sensible gain control step in dB.
> > Is it 0.5dB ?
> > I am asking, because if one is using a digital gain control in a 24bit
> > fixed point DSP, once could use almost any step size, so I am looking
> > for the smallest sensible size to use.
>
> Well, the minimum possible difference for 24bit is between -2^23+1 and
> -2^23, and that would be about 0.000001dB.

He said sensible not possible.

Lee
Received on Fri Dec 23 08:15:08 2005

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