Re: [LAU] jack clipping level in dB

From: andy baxter <andy@email-addr-hidden-online.co.uk>
Date: Tue Apr 26 2011 - 23:55:15 EEST

On 26/04/11 21:52, Harry Van Haaren wrote:
>
>
> On Tue, Apr 26, 2011 at 9:36 PM, andy baxter
> <andy@email-addr-hidden-online.co.uk
> <mailto:andy@email-addr-hidden-online.co.uk>> wrote:
>
> I have a signal from a Supercollider program which goes into jack.
> I want to adjust the signal level so it's as loud as possible
> without clipping. Could someone tell me what is the loudest sound
> that doesn't get clipped in dB, as measured by ardour or
> meterbridge for example?
>
>
> To be nasty, 0dBFS... but that's not the answer you're looking for.
> JACK's audio is floating-point between -1 -> 1.
> Hence outputting all 0's is silence. If you scale your output to be
> between -1, 1 then you've got what you want.
>
> Note that inter-sample peaks in high frequencies will still go beyond
> your DAC's range, so there might be clipping in hardware... but I'm
> not too certain in that field.
>
> Cheers, -Harry

OK. I was aiming for about that, but I noticed that ardour's peak level
meters go into positive decibels as well.

thanks,

andy
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Received on Wed Apr 27 00:15:03 2011

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