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Joined: Nov 2009
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Hello,
Here is a problem I found on my brand new CASIO PX 320:
With the four piano tones, I hear a bad high frequency
resonance on Eb5, which diminishes on E5, F5, and almost
disappears on G5.
I recorded that on the following mp3 file
(notes C5, D5, Eb5, E5, F5, G5):

http://www.filedropper.com/casiopx320-track2

If you own a CASIO PX 320, could you tell me if
you have the same problem ? Thank you very much.

Eric


Last edited by ericsenn; 11/18/09 11:20 AM.
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Sounds almost identical to my early 1990's vintage Roland keyboard.

Mine does this on those same higher notes but not around middle C. I think it is the way the sustain is modeled. I only hear it when I hold the note for as long as you did.

I wonder if it's an artifact of sampling. The mic used to create the sample was likely inside the piano case. But few of us listen to pianos with our ear eight inches from the strings. Maybe one of the mics was over the Eb strings when Casio engineers sampled the piano??

Your MP3 files does not sound like electronic hash to my ears, just surprisingly like my ES-56. I listened to your file and my keyboard using the same AGK headphones at about the same volume level

Question: Do you hear this on the other voices, say the other piano sound or on the strings or bass? if not then this sound is a part of the sampled sound.
My Roland makes a small amount of this in the sustain part of every voice so I figure it is a feature of the sound engine.

Last edited by ChrisA; 11/19/09 02:47 AM.
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Thank you for your answer ChrisA.

In fact I am hearing this resonance on the four piano tones
of the casio px 320, but no for other voices (electric
piano, strings, organs ...), and always for the same notes
in the 5th octave (Eb5 to Bb5).

This let me rather perplex ... indeed, if this phenomenon
was heard only on one piano voice, I should have think of
a sampling artefact, as you suggest (a bad resonance of the
recording gear around those frequencies). But now, for
the four piano voices, that would imply that the same
recording devices were used and positioned exactly
the same around the four different pianos to generate
the same harmonic resonances during the sampling ...
well this is still possible, even if less probable.

So I don't know. Does my piano has got a problem and should
I send it back to the seller, or is this common for the
casio px 320 ? This is the question I am wondering about now.

This is why I would really appreciate to share this
experience with other digital pianos owners and especially
casio px 320 owners. Thank you very much for your help.

Eric




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Though I could not listen to your demo (no sound this computer)

I checked my 320 and no unusual sounds on keys/tones mentioned.

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Hi there,

I can't play your sound file, but I think my new PX-730 does the exact same thing, those few notes about an octave and a bit above middle C, and only when you hold down a few of them together or use the sustain pedal. It drives me nuts. I don't know if it did that from brand new or if it started after a few weeks, but now I notice it all the time. Did you ever solve the problem? Also I find it sounds much better through a good set of headphones than through the built in speakers, but still does it with headphones (i.e. it is not a speaker problem).

Last edited by rdc001; 01/18/10 08:07 PM.
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I recently purchased a PX-130 and it does the same thing.

Also happens on the PX-730 and PX-130 I tried out at the store.

Really annoying!

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My 310, 320 and 575 all did that. I stopped myself from getting a 330.

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Well, I guess the old adage applies here: "You Get What You Pay For". It is disappointing that Casio is still ignoring the flaws with their products. I thought with the hiring of Mike Martin, Casio would clean up their image, but it hasn't happened. Mike Martin, is their marketing director who is a professional musician with contacts in the music business. Perhaps there hasn't been enough time for him to make a difference in improving their product quality. The reports about the stuck/depressed keys, key alignment problems and internal hammer noise on some of the PX-330's are all quality control issues that should not be happening. I suppose that at the prices Casio's go for much is overlooked and they are seen as throw away items if problems develope after the one year warranty.

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My PX-320 is still holding strong and I still love it. Bought online for a very good price, I must have been lucky.
I will consider Casio again for my next DP, but I don't feel any need to upgrade at this point.

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My two cents:
Same as the other poster, I cannot play your file.
My px-130 sounds OK (have had it for like 6 months), but I returned two px-320s because I noticed inconsistency in the pitch between some notes.

Originally Posted by ericsenn
Hello,
Here is a problem I found on my brand new CASIO PX 320:
With the four piano tones, I hear a bad high frequency
resonance on Eb5, which diminishes on E5, F5, and almost
disappears on G5.
I recorded that on the following mp3 file
(notes C5, D5, Eb5, E5, F5, G5):

http://www.filedropper.com/casiopx320-track2

If you own a CASIO PX 320, could you tell me if
you have the same problem ? Thank you very much.

Eric



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