I received an email from someone who carefully listened to, looked at and analyzed the two original files I posted, and to him it appears that both files, while having somewhat different waveforms, used the same audio source. I may have made a mistake in the original recording (I may not have correctly muted one track when exporting the other, for example).
So here are two new MP3 files from distinct, separate audio files, one from my Yamaha CP5 MIDI keyboard (which has a very nice sampled Yamaha grand piano as the default patch #1), and the other audio file exported from PianoTeq as a WAV file, using the same MIDI file performance (a brief improvisation of mine) and the PianoTeq modeled Yamaha grand (the YC5). The files appear at the bottom of this post along with the MIDI file used for the comparison, and the methodology follows:
I turned on my Yamaha CP5 MIDI keyboard, but did not launch PianoTeq, so my external MIDI keyboard was the only possible sound source. I loaded the MIDI file of my brief chord improvisation into the internal memory of the CP5, and had the keyboard play the MIDI file using its own internal CF Grand (preset patch #1, a sampled Yamaha grand piano). The output of the keyboard was routed using balanced TRS cables to a rack-mounted mixer, and from there directly into a Focusrite Scarlett 2i4 audio interface set at 96 kHz sample rate and 24-bit depth. I recorded the output of the Scarlett interface into my computer, using the digital-audio recorder Ardour in Linux.
I then turned OFF my external CP5 MIDI keyboard, and turned OFF the rack mounted mixer, so there was no possible external sound source. I then launched PianoTeq 5, loaded the same MIDI file into PianoTeq, and chose the preset YC5 4 mics (a Yamaha grand piano modeled by PianoTeq, using the "Sound Recording" output setting (instead of "Stereophonic")). I then had Pianoteq export a WAV file (at high settings) of its performance of the MIDI file using the "YC5 4 mics" preset. I imported that WAV file into Ardour (the digital-audio recording application) into a new track just below the previous audio recording from my MIDI keyboard through the Scarlett audio interface.
I then synchronized both the starting and ending times of both tracks, so that the music in each track began at precisely the same time, and the track ended at exactly the same time. I did this so that I could do rapid A/B comparisons of both tracks in order to find the PianoTeq preset and settings that I thought sounded fairly close to the sound produced by my CP5 keyboard's sampled Yamaha grand. The WAV file exported by PIanoTeq was actually several seconds longer than the recording I made from my MIDI keyboard, but those extra seconds were nearly silence, so I truncated the PianoTeq exported file to the same length as the previously recorded file, and in both I placed a quick fadeout after the last sustain-pedal release in the MIDI file. I then normalized the volume of each file to the same level, -2 dBfs. Then I used Ardour's "Stem Export" feature to export each track, one at a time, into separate WAV files at 48000 sample rate, 16-bit. I converted each of these files into fairly high-rate kbps MP3 files using the program Sound Converter in Linux.
Finally, I uploaded those two audio files to the PianoTeq Forum, along with the original MIDI file I used to make the comparison, and all three of those files appear below.
Yamaha grand piano comparison, sampled or modeled, file A
http://www.forum-pianoteq.com/uploads.p...and-A2.mp3
Yamaha grand piano comparison, sampled or modeled, file B
http://www.forum-pianoteq.com/uploads.p...and-B2.mp3
The original MIDI file (a brief improvisation of my own, recorded just before making this comparison)
http://www.forum-pianoteq.com/uploads.p...arison.mid
Best wishes,
Steve
Last edited by Stephen_Doonan (10-03-2016 15:36)
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Linux, Pianoteq Pro, Organteq