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Glad you're finding some value in this project!

I should have noted that the ES100 analysis (above) was a collaborative effort between Daniel Richter and myself. Daniel's Audition-fu is quite impressive!

Thanks, although I still have much to learn.

Has anyone ever done the DPBSD on an actual acoustic piano and recorded it? My goal is to take my favorite piano sample library, Sampletekk's Black Grand Ambient, and, through the use of Kontakt and Kontakt's script engine, rewrite the instrument so that it passes the DPBSD test 100%. I'd like to have an audio recording from a real acoustic so that I have a reference for easy side-by-side comparison while the Kontakt instrument is being developed.

Not sure it's possible, unless you can rustle up an acoustic piano with a MIDI IN jack.

Even then, there's no guarantee it will pass all the tests. It obviously wouldn't be layered, stretched, or looped, but it might not track key and pedal stuff with full fidelity.

Well you can replicate the test with an actual performance not just midi. It would be important to hear what half pedaling and sympathetic resonance actually sounds like for instance.

You can try yourself on any piano!

Do you have one you can give me?

Try pianoteq trial. I believe Pianoteq passed every DPBSD test without a problem, so I am guessing that it has the acoustic behaviors comprehensively modelled. Would that suffice?

I have actually already tried the pianoteq trial. I found the sound to be too synthetic sounding still although it is improved over previous versions. My main reason in asking if someone has recorded an acoustic is to hear the fine details. For instance in the late pedal test. I'd like to hear how the harmonics and other characteristics of the sound behave. There's much more to it to get it to sound realistic than just switching on or off samples at the right time. And it's not something that you can simply go to a store and play an acoustic and remember. Very careful comparisons have to be made side by side. Nobody seems to get that.

Volunteering to make a test file for the Casio PX-5S, can't see that it has been done, although I only scrolled through about ten pages (of 44) in the thread.

I understand I need to do a factory reset, which means all user settings will be wiped out, but I need to reorganize my stage settings anyway, so it's just fine. Anything else I need to look out for? I've downloaded the MIDI file.

Thanks mate! Not 100% sure, but I believe the piano voice is the same as the PX-350.

I think so too, does that mean the conclusions of the test should be the same for the PX-5S as they were for the PX-350?

Then I have yet to find out how to feed the MIDI file to the piano and make it record and play it at the same time. Don't know if I have to feed it to the USB connection at the back, so the USB key slot is free to record.

Would a simple MIDI player like the one in Synthesia or Notation Composer suffice for that? Those are the only ways I've sent MIDI files to the piano. I'll check the Casio forums for a simple solution, possibly send a question in the Facebook group.

I'm making the mp3 file available for download at this URL:

https://notendur.hi.is/~thn8/dpbsd_v2.0_Casio_PX5S.mp3

I didn't do the following, asked for in the README file.

Instrument settings:
- Generally use the default patch, which should be the best acoustic piano, but with reverb off.
- You may want to do a factory reset in order to restore all defaults.
- Turn ON any sympathetic resonance effect.*
- Turn ON any key-up noise effect.*
- Turn ON any pedal up/down noise effect.*
- Turn OFF reverb, or any other delay effects such as chorus.
- Turn OFF, defeat, or center any EQ settings, amp models, etc.
- Set MIDI velocity curve to linear.
* If there is a level setting please leave it at the default setting. If the default is zero, or the effect is inaudible unless turned up, then please turn up the effect, but only to the point where it is audible/tasteful and not obnoxious.

Recording & MP3 output:
- Record to a WAV file, sample rate 44.1kHz, stereo, resolution 32 bit float if possible.

Mostly due to infamiliarity with my piano! I had the PX-5S set to stage setting 0-0, which is Concert grand piano, pretty basic settings, though. I'm pretty sure it's not EQ'd and reverb is set to Hall2 (no OFF setting exists, it seems, for reverb.)

Finally, sorry for the metronome clicking at the beginning. I could easily just cut it out in the program I converted the WAV file to MP3, ffmpeg. The MP3 file is 16 bit, not 32 bits as you ask for. I believe the original WAV is 16 bit also, not sure if the piano can record at 32 bits.

Thanks! I snagged it and it's in stereo and the levels look OK for analysis. I've got a bit of a backlog going, hope to get to it soon.

Great, I'm glad if you can use it, if not, just let me know!

I have these sounds.....the PMI Bosendorfer 290 sounds the best of the three, really nice but dynamics are too flat. The Fazioli is too dark and the Steinway B has the best dynamics but doesn't sound as good as the other two.

''Large dynamic range (54dB, vel=1:127)''

again, it's all theory. In practice, budget master keyboards, even the ones with hammer-action, are incapable of going from 1 to 127. They usually go only from 45 to 110, so they are unable to bring out the potential of Pianoteq and the dynamics are crap unless you have a spectacular master keyboard.

I bought an F20 a few days ago and it literally revolutionized my practicing life. I completely love it. I used to use sample libraries from East West and Imperfect Samples, also Pianoteq, they sound really great but a real problem is that master keyboards playability generally sucks. Playability wise, the F20 blow them all out of the window and it sounds really good too.

I'd like to send you the audio file but the problem is that a midi file, played back by the F20, seemn to be played back by the piano of it's General Midi sound set, not by the internal piano sound. I tried yesterday and that indeed is the case. The internal sound piano sound darker and better than the one in the GM set.

So, by playing back a midi file, it's no guarantee that a keyboard will use the main piano sound, as it might not be part of the GM set. Which might well be the case with the other tests done here. I'll give it another try in the next few days

This is a common issue with Roland SN DPs, the RD-700NX is the only one I know of that has an easy setting to play back whatever instrument is selected. The others you have to jump through major MIDI hoops to get the SN piano to play via MIDI.

I had similar problems with my Casio PX-5S, few weeks back. MIDI files played back would always change the voice on the piano to GM Piano 1. Then I found out I could prevent a program change with something called RX filter in the system settings, by setting it to filter out program changes, sent to the piano.

After doing that, the piano would always layer the songs with strings, that is, play both grand piano and strings. Mike Martin revealed to me that the piano was listening to incoming MIDI events on MIDI channel 2. In plain English, that means the piano would play a song with the voice that was set on MIDI channel 2, which was strings in my case. By putting grand piano on all four zones (or MIDI channels) the problem seemed to be solved.

This is however not happening anymore, even after a factory reset. There is no program change and the basic grand piano is played, when feeding a MIDI file to the piano.