Topic by say yes

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  • say yes
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  • Registered: 05-02-2018
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Topic: Pianoteq support up to 16kHz only?

I find audio file exported by PTQ has a cut-off at 16 kHz. No matter what kind of format (WAV, FLAC, MP3) or bit-depth or sample rate there is, the cut-off always exists. Interestingly, the equalizer window shows the highest frequency is also 16kHz. Is that implies PTQ simulates piano's overtone under 16kHz only? If not, does PTQ's maxium internal sample rate is 32kHz? But the item in option window can be set up to 48kHz instead. Did I do anything wrong?

Last edited by say yes (11-02-2018 05:36)

Reply by EvilDragon

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  • EvilDragon
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Re: Pianoteq support up to 16kHz only?

Pianos don't really have a lot important overtones above 16 kHz anyways...


Also, I can see partials above 16 kHz being present on the sonogram. Example:

https://i.imgur.com/TnPssae.png


So no, it's not cut off at 16 kHz.

Last edited by EvilDragon (11-02-2018 12:25)
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Reply by kalessin

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  • kalessin
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Re: Pianoteq support up to 16kHz only?

Agreed. I exported the blues demo to a 48kHz/24bit wav, just for fits and giggles, and it shows a continuous spectrum right up to 24kHz. However, one has to choose appropriate FFT settings, lest very high frequencies are hidden from the spectrum. Also the SNR drops below -100dB quickly for frequencies above 10kHz. As you said, there's not _that_ much going on in the very high frequency ranges.

(Side note: given that any real-life recording rig won't give you much better SNR than say, 80 or 90dB, all sample libraries would have to show for in those upper ranges is... noise; microphone and amplifier noise mainly. Which makes sample libs using more than 44/16 for sample storage a bit ridiculous.)

Pianoteq 6 Standard (Steinway D&B, Grotrian, Petrof, Steingraeber, Bechstein, Blüthner, K2, YC5, U4, Kremsegg 1&2, Karsten, Electric, Hohner)