[sdiy] Analog bandwidth

[Rutger Vlek]

I totally agree with you! And just to be clear: I'm not saying that anything above 20k doesn't matter. I'm just saying that many old synths were designed in a way that doesn't do justice to supersonic signals either (slow opamps, and choice of LPF capacitors in opamp stages). So from a point of modeling, I'm just wondering if it makes sense to go there. A far more interesting direction would be to design a new synth that explicitly handles supersonic material in such a way that it influences the sonic range in a nice way by means of the modulation types you describe.

Rutger


On 21 feb 2014, at 20:09, cheater00 . wrote:

> Hello,
> signals which are inaudible are very important when performing
> outright ring modulation, pitch shifting (including chorus), and when
> doing things that push supersonic information down into the audio
> band: amplitude modulation (every single processing stage in a synth),
> multiplication, non-linearities. Saying that it doesn't matter because
> you can't hear above 20 kHz is a cop out.
> 
> Cheers,
> D.
> 
> On Fri, Feb 21, 2014 at 6:56 AM, David G Dixon <dixon at mail.ubc.ca> wrote:
>>> I think that many old synths were also designed with the
>>> knowledge in mind that we can only perceive sounds up to
>>> 20kHz.
>> 
>> I can only perceive sounds up to 13kHz.  That's why my whole world sounds
>> full of warm analog goodness!
>> 
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