So, I was wondering if anyone knows how a limiter/expander/compressor works so I can build a patch. It seems to me that these devices simply turn up/down the volume at different levels, correct? Is there spectrum analysis involved? Should I do a [fiddle~] and when some collection of resultant amp's cross some threshold level chenge the volume?
Thanks for your help, -student2
There are two externals (that I know of) that might suit your needs:
- compressor~ by Yves Degoyon (http://ydegoyon.free.fr/software.html)
- limiter~ made by me. It is a stereo look ahead limiter and can be found here: http://www.akustische-kunst.org/puredata/freeverb/
In the end you're right, you just have to adjust the volume according to incoming signal levels. More advanced compressors do that in different independend frequency bands.
Olaf
Wade McDaniel schrieb:
So, I was wondering if anyone knows how a limiter/expander/compressor works so I can build a patch. It seems to me that these devices simply turn up/down the volume at different levels, correct? Is there spectrum analysis involved? Should I do a [fiddle~] and when some collection of resultant amp's cross some threshold level chenge the volume?
Thanks for your help, -student2
PD-list mailing list PD-list@iem.kug.ac.at http://iem.kug.ac.at/cgi-bin/mailman/listinfo/pd-list
On Fri, 23 May 2003, Wade McDaniel wrote:
So, I was wondering if anyone knows how a limiter/expander/compressor works so I can build a patch. It seems to me that these devices simply turn up/down the volume at different levels, correct?
There is a good introduction at: http://www.harmony-central.com/Effects/Articles/Compression/
Is there spectrum analysis involved? Should I do a [fiddle~] and when some collection of resultant amp's cross some threshold level chenge the volume?
The "env~" object can be used to build a simple compressor/limiter.
Greetings,
Guenter
Thanks for your help, -student2
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guenter geiger writes:
On Fri, 23 May 2003, Wade McDaniel wrote:
So, I was wondering if anyone knows how a limiter/expander/compressor works so I can build a patch. It seems to me that these devices simply turn up/down the volume at different levels, correct?
There is a good introduction at: http://www.harmony-central.com/Effects/Articles/Compression/
Is there spectrum analysis involved? Should I do a [fiddle~] and when some collection of resultant amp's cross some threshold level chenge the volume?
The "env~" object can be used to build a simple compressor/limiter.
There is a quite good one under zexy-lib as external called limiter~ with which you can build a limiter and compressor system.
mfg winfried
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guenter geiger -
Olaf Matthes -
Wade McDaniel -
Winfried Ritsch