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#2260033 - 04/10/14 11:16 PM Strange sound from Privia Px-330..
rjd5974 Offline
Junior Member

Registered: 03/19/14
Posts: 5
I've been noticing a strange sound coming from my Privia. It only seems to happen around the G, G#, and A below middle C. I can't figure out why I would be getting it on a digital piano which is loaded with samples. I could try to describe it, but while searching I found a review on Sweetwater where someone seems to have the same issue and describes it far better than I could....look at the last review called "Close...but no cigar."

http://www.sweetwater.com/store/detail/PX330/reviews

That's about what I'm hearing...just in a different spot...I kinda notice it just on a single note as well though. Especially as the note starts to decay.

Any idea what could be causing this? I'm unfortunately well past my warranty period.

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#2260074 - 04/11/14 02:37 AM Re: Strange sound from Privia Px-330.. [Re: rjd5974]
Charles Cohen Online   content
1000 Post Club Member

Registered: 12/26/12
Posts: 1161
Loc: Richmond, BC, Canada
If what you hear, on a single note, is a tiny "glitch" in the sound as it decays:

. . . that's "looping".

It's a side-effect of using a short sample of a decaying string, and re-playing it, just reducing the volume gradually. It is one of the banes of digital piano designers (and players). You can eliminate it (during design) by recording the _whole duration_ of a note, and playing it back when the key is pressed.

You'll get the same effect on many other DP's. Go through the "DPBSD" thread; most of the DP's have audible looping noted.

"Beats" between two notes (at an interval of third, usually) are normal. It's a "feature" of any instrument tuned to the standard tempered scale, with evenly-spaced semitones.

Try Googling:

"equal temperament vs just intonation"

for an explanation. Or, if the PX-330 supports "just temperament" (it'll be a menu option), see if that changes the sound.

. Charles

PS -- Once you hear these artifacts of the technology, you _keep hearing them_. It's an ugly world.<g>

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