>From: Steven Curtin <sdcurtin@lucent.com>
>
>>If so, it's probably best just to dump the broken ones that are in
>>the spec (not implemented yet) now. Arguments?
How about keeping the waveshaper if there is no a special waveshaper
opcode yet available?
Basically we could as well dump out all filters because we have the
arbitrary filter opcode. Right? So, we could as well keep both the compress
and pcompress in core if some filters too.
How the attack and release in compressor really works? Two persons on this
mailing list seem to know the details. I hope you're not holding the info
any longer! The problem with those rhough explanations is that they leave
a great deal of details undefined.
Pcompress could also have a delay in the power level signal such that the
current power is the power of a future signal. This way the gain should
be at lower level just in time when the high power signal comes in.
Attack time could be this delay time directly.
What about having the gain as control rate signal which makes sharp changes
according to the power, and the attack and relase times are done by
applying a time-varying low-pass filter to the gain signal. A higher filter
cut-off in attack and a lower cut-off in release should give the desired
result.
I'm also wondering what is wrong in using waveshaper as compressor.
Could somebody explane? As somebody explaned the compressor approach
the waveshaper. A waveshaper at least cuts off the sudden high peaks
in signal very efficiently. Having a smooth curve in waveshaper, there
should no be clicks and have less artifacts.
>One component of a compressor that is not specifically provided is a
>dual-slope slew rate limiter. This is basically a portamento generator
>that has a different rate depending on whether the input signal is going up
>to down. This controls and "attack" and "decay" parts of the system, and
I don't know what kind of system it will be in practice but sure I'm
able to say if it is good or not when I see one. So, I would like have
compressor attempts for examination. I already have one coming with
CEC (a Csound interface).
Yours,
Juhana
This archive was generated by hypermail 2b29 : Mon Jan 28 2002 - 11:46:31 EST