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Internal clipping [message #87544] Mon, 23 March 2020 04:37 Go to next message
MatthieuTibi is currently offline  MatthieuTibi
Messages: 44
Registered: July 2017
Location: Paris
Member
Hello,

My question is about 2d audio mixer.

I know it's in 80 bits, but can it clip on the way of the signal ?

Example :

I have a digital full-scale stereo input (like a CD player on a s/pdif input for example).
If I set 20 dB of digital gain on the trim of that stereo strip and -20dB on the stereo monitoring, is it equivalent to 0dB everywhere ?
Or will the strip clip before the output ?

Thanks !
And good luck everybody for that hard period we're in...
Matthieu
Re: Internal clipping [message #87545 is a reply to message #87544] Mon, 30 March 2020 07:06 Go to previous messageGo to next message
MatthieuTibi is currently offline  MatthieuTibi
Messages: 44
Registered: July 2017
Location: Paris
Member
Hello,

Well I did some tests and it seems to work perfectly.
I put +10dB on a Channel Strip and +10 dB on the fader on a full-range signal (already at about 0dBFS).

All is red Smile

But since my output is at -23 dBFS I can't hear no clipping.

That confirms the theory I saw on differents forums, about the 80 fixed bits audio engine... it has a huge "numeric" headroom before clipping.

[Updated on: Mon, 30 March 2020 07:11]

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Re: Internal clipping [message #87560 is a reply to message #87544] Fri, 17 April 2020 11:37 Go to previous messageGo to next message
Perfect Record is currently offline  Perfect Record
Messages: 3
Registered: April 2020
Location: St. Paul, Minnesota
Junior Member
Are you reducing the output via the output level control or via a master fader. If you are attenuating via the output level control, that likely will allow the signal to clip. Try using a master fader.
Re: Internal clipping [message #87568 is a reply to message #87560] Sat, 18 April 2020 16:25 Go to previous message
MatthieuTibi is currently offline  MatthieuTibi
Messages: 44
Registered: July 2017
Location: Paris
Member
Hello Perfect Record,

Well I only attenuate with the Monitor Control, and I really don't hear any distortion.
I think the conversion DA is after the numerical monitor control, and so there is no problem.

Be careful : it's possible with my 2882, but I think that with the ULN soudcards it's different : the monitor control is analog, and so it wouldn't work.

[Updated on: Sat, 18 April 2020 16:29]

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