At 11:32 PM +0000 4/11/07, John Hartog wrote:
>It plays that way on my system too.
>
>John Hartog
>
>--- In Dan Dugan <> wrote:
>>
>> >This is a really cool art piece done from soundscapes. A must for all
>> >on the list for a perspective.
>> >
> > <http://daneyalmahmood.com/justinecooper_past_video.html>
>>
>> As it plays back on my Mac, there's a good teaching example of an
>> engineering mistake. The three calls at the beginning--the reverb
>> tails "fuzz out" into distortion. This is what truncating (like going
>> from 24 bits to 16 bits) sounds like without dither. Is that
>> happening in other people's playback (I hope it isn't my monitor
>> system)?
>>
> > -Dan Dugan
> >
The bouncy break-up that occurs mostly during the fade?
http://ad2004.hku.nl/naturesound/SOS_webH264lo_Frag_FadeOnly.mov
(16/48K aiff export from QT mo, looped)
It does sound like a nasty example of quantizing noise. Perhaps the
"original" in the movie's soundtrack was 8 bit with the fade going to
silence due to compression used at that generation. The QT movie's 8
bit/16K soundtrack is 256kbs ACC (H264) using 9mb of the 12mb movie.
I doubt the H264 compression would create noise this obvious.
Here's the beginning of the QT movie soundtrack to better locate the
moment I'm refering to.
http://ad2004.hku.nl/naturesound/SOS_webH264lo_Frag.aiff (16/48K aiff
export from QT movie)
Rob D.
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