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Re: Re: Digital Distortion

Subject: Re: Re: Digital Distortion
From: Walter Knapp <>
Date: Fri, 20 Jun 2003 16:52:37 -0400
Raimund Specht wrote:

> It seems, that this recording was originally recorded with a 
> MiniDisk system (or subsequently saved as a MP3 file). This can be 
> seen on the spectrogram from the boxy "noise reduction" patterns at 
> higher frequencies. I guess, that the clipping already occurred 
> during recording in the analog path of the pre-amplifier. When an 
> over-modulated sound is fed into an A/D converter and then encoded 
> using ATRAC, the resulting signals may sound very strange. 
> Obviously, the analog clipping created very intensive broad-band 
> noise which was then further distorted by the MiniDisk data 
> reduction system.

It does not take ATRAC or MP3 to do this. I've seen and heard the same 
thing from DAT.



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