[sdiy] Build a board to restore audio

[Scott Gravenhorst]

Sounds like a job for a parametric equalizer.  These can be made in analog,
but I've only used digital (DSP) ones.  Quite nice.

Richard Wentk <richard at skydancer.com> wrote:
>At 11:35 28/11/2002 +0100, bo ca wrote:
>
>>Hi to everyone!
>>
>>This is not about synths but maybe some of you can help me. I am looking 
>>for information to build a board to restore audio. Something to remove the 
>>noises and the typical harmonics provided by power supplies, records, etc...
>
>This is a lot easier to do well in software than hardware. Something like 
>Steinberg's Clean or Roxio's Easy CD includes the tools you need, and will 
>cost a lot less and be more effective than trying to build a box to do it.
>
>There are effective tools like Cedar that work in hardware, but they're 
>*very* expensive. And they're DSP-based. Most analogue solutions are going 
>to be a band-aid that does more harm than good to the signal. You can 
>bimble around with analogue scratch filters and hum-removing comb filters 
>and the like but it's really a lot of hassle, and won't be nearly as useful 
>to you as the software I mentioned.
>
>Richard
>
>

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