Re: Zipper Noise, an example

[Charles Zwicky <cazwicky@earthlink.net>]

The zipper noise can easily be supressed by interpolating those 
steps in the gain control algorhythm.

Most programmers don't listen too closely, apparently.


>Per Boysen schrieb:
>>You hear the zipper noise (of the TC Electronix FireworX) when I 
>>use the MIDI expression pedal to adjust the volume, something you 
>>do a lot when playing guitar (but never with wind instruments). 
>>It's a little annoying but not that bad that I wouldn't use the 
>>volume pedal at concert. Strange thing is that when I use a MIDI 
>>expression pedal to adjust the beat sync tempo division for the LFO 
>>bound filter (on the reverb return) there is no such noise.
>
>Its very likely not an interference, its just unsmoothed direct 
>control of the amplitude. 128 steps are not fine enough...
>You can test this, as its more audible on low frequency sine waves. 
>if you feed a sound without much overtones/treble and control the 
>volume is it more audible? Its hard to believe, that they don't 
>smooth it.
>In my Max patches I usually smooth it with 20 ms which creates an 
>acceptable latency for volume control...
>
>Stefan
>
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