Re: Hiss Effect
Re: Hiss Effect
- Subject: Re: Hiss Effect
- From: tahome izwah <email@hidden>
- Date: Wed, 18 May 2011 10:36:45 +0200
Actually, they sound nothing alike (also, your noise has a huge DC
offset). The vinyl noise has an approximately linear rolloff between 6
- 11 kHz while your noise is entirely white.
--th
2011/5/18 John Clements <email@hidden>:
>
> On May 17, 2011, at 11:54 PM, tahome izwah wrote:
>
>> 2011/5/18 Artemiy Pavlov <email@hidden>:
>>> What I proposed takes 10-15 lines of code and a few minutes to insert it into your app, has zero init time, and you can introduce parameter control or drift easily to make it variable. How is an audio file better in this respect?
>>
>> It sounds like the real thing. It can be surprisingly complex to model
>> vinyl noise in a convincing manner.
>>
>> --th
>
> Well, I decided to try to prove myself wrong, and wrote a program that generates white noise.
>
> Here's the complete program (written in Racket):
>
> #lang racket
>
> (require (planet clements/rsound))
>
> (define (hiss t)
> (/ (random) 300.0))
>
> (rsound-write
> (fun->mono-rsound (* 5 44100) 44100 hiss)
> "/tmp/hiss.wav")
>
>
> ... and here's the result
>
> http://brinckerhoff.org/tmp/hiss.wav
>
> When it's quiet, it actually doesn't sound that bad. To compare, here's a website with (what appears to be) sampled vinyl hiss.
>
> http://www.freesound.org/samplesViewSingle.php?id=68400
>
> It sounds to me like the pops are what's going to make or break this sound, and I didn't try to model that at all (instead, I'm going to try to get what's left of my 6 hours of sleep :). )
>
> All the best,
>
> John Clements
>
>
>
>
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