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Violin, Viola,Cello background noise

Can anyone identify the quiet, but obvious "shushing" sound found to some degree in all CD recordings of string section performances? It seems to be most apparent in sonatas and other chamber music. I can notice this sound with all my speaker sets, CD players, and amps, both tube and solid state. The sound is present to some degree from every CD manufacturer regardless of whether the recording is DDD or ADD.
tilghman

Showing 2 responses by sugarbrie

sugarbrie
3,854 posts
 
It is probably in all recordings, you just notice it more when the music is quiet.

There is white noise added to most digital recordings called Dither. Dither is a form of noise, or 'erroneous' signal or data which is added to sample data for the purpose of minimizing quantization error. Dither is routinely used in processing of both digital audio and digital video data. Jitter is not synonymous with dither. Some CD players have adjustable dither.
sugarbrie
3,854 posts
 
I give my second vote to RCprince. I actually own a CD player with adjustable dither. I ran from the highest setting to the "no dither" setting. While the sound signature of the music changed slightly, there is no noticeable noise per se.

But on some chamber recordings there is a slight sound I would also attibute to the bows or something happening non musical with the instruments. I can also hear the clicking of the valves on the wind instruments.
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