--- In "Rich Peet" <>
wrote:
> Many already know this stuff and can disregard this post.
> But for the ones out there that are fairly new to digital
recording
> take note that distortion in the digital world does not sound the
> same as distortion sounds in the analog world.
>
> In fact there are some well sold "famous" CD's out there on the
> commercial market in natural sound that have a lot of digital
> distortion. Sometimes you have to know the critter to identify
that
> the recording is distorted and sometimes the people doing the
> final "master" don't have a clue what a critter sounds like.
>
> Linked is a stereo 400kb wave download that is distorted on both
> tracks. One track is clearly more so but looking at the spectral
> display can make you wonder a long time how the computer made the
> bird sound like that.
>
> http://home.attbi.com/~richpeet/distortion.wav
>
> I hope this post helps someone avoid recording that perfect sound
> that ends up being more techno-garbage.
>
> Rich Peet
Hi Rich,
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.
Regards,
Raimund
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