Re: [linux-audio-dev] Paper on dynamic range compression

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To: The Linux Audio Developers' Mailing List <linux-audio-dev@...>
Date: Wednesday, October 18, 2006 - 9:55 am

On Wed, Oct 18, 2006 at 12:48:59 +0100, Dan Mills wrote:

the gain calculations are relativly cheap, its converting those gain
levels back into a gain coefficient on the output that's expensive (from
what I remember).

the gain tracking is done per sample, but the cofficient calcualtion is
done every 4.

> BEAST was the project that had the SSE 2* up/down

But what interpolation function? If you something obvious and cheap you
may as well not bother, as you wont get accurate peak interpolation.

> The API is likely to be 'interesting' as most dynamics

I dont think a streaming resampler is more challenging than a correct one
that runs on buffers. You just have to preserve state with every call,
rather than at the buffer boundaries.

- Steve

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Messages in current thread:
[linux-audio-dev] Paper on dynamic range compression, Andres Cabrera, (Thu Oct 5, 3:50 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Alfons Adriaensen, (Thu Oct 5, 8:46 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Andres Cabrera, (Thu Oct 5, 1:44 pm)
Re: [linux-audio-dev] Paper on dynamic range compression, Andres Cabrera, (Thu Oct 5, 2:01 pm)
Re: [linux-audio-dev] Paper on dynamic range compression, Andres Cabrera, (Fri Oct 6, 2:25 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Andres Cabrera, (Thu Oct 5, 2:14 pm)
Re: [linux-audio-dev] Paper on dynamic range compression, Alfons Adriaensen, (Thu Oct 5, 3:29 pm)
Re: [linux-audio-dev] Paper on dynamic range compression, Andres Cabrera, (Fri Oct 6, 2:48 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Fons Adriaensen, (Thu Oct 5, 5:05 pm)
Re: [linux-audio-dev] Paper on dynamic range compression, Erik de Castro Lopo, (Tue Oct 17, 9:18 pm)
Re: [linux-audio-dev] Paper on dynamic range compression, Erik de Castro Lopo, (Tue Oct 17, 10:28 pm)
Re: [linux-audio-dev] Paper on dynamic range compression, Jens M Andreasen, (Wed Oct 18, 5:23 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Erik de Castro Lopo, (Wed Oct 18, 8:50 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Fons Adriaensen, (Wed Oct 18, 11:33 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Fons Adriaensen, (Wed Oct 18, 4:35 pm)
Re: [linux-audio-dev] Paper on dynamic range compression, Erik de Castro Lopo, (Wed Oct 18, 11:21 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Steve Harris, (Wed Oct 18, 11:08 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Steve Harris, (Wed Oct 18, 10:42 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Paul Winkler, (Tue Oct 17, 11:00 pm)
Re: [linux-audio-dev] Paper on dynamic range compression, Steve Harris, (Wed Oct 18, 9:55 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Steve Harris, (Wed Oct 18, 10:58 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Fons Adriaensen, (Tue Oct 17, 9:54 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Fons Adriaensen, (Tue Oct 17, 2:41 pm)
Re: [linux-audio-dev] Paper on dynamic range compression, David Olofson, (Tue Oct 17, 4:51 pm)
Re: [linux-audio-dev] Paper on dynamic range compression, Fons Adriaensen, (Tue Oct 17, 5:05 pm)
Re: [linux-audio-dev] Paper on dynamic range compression, Dominique Michel, (Wed Oct 18, 3:40 pm)
Re: [linux-audio-dev] Paper on dynamic range compression, Steve Harris, (Wed Oct 18, 10:54 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Steve Harris, (Tue Oct 17, 12:06 pm)
Re: [linux-audio-dev] Paper on dynamic range compression, Alfons Adriaensen, (Fri Oct 6, 9:00 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Alfons Adriaensen, (Thu Oct 5, 2:22 pm)
Re: [linux-audio-dev] Paper on dynamic range compression, Andres Cabrera, (Fri Oct 6, 3:47 am)
Re: [linux-audio-dev] Paper on dynamic range compression, Andres Cabrera, (Fri Oct 6, 2:31 pm)