KVR Audio

yul · Post by **yul** » Sun Sep 29, 2019 9:26 pm

Hello! I am looking at sampling my Kawai K4 individual waves for possibly use with a vst sampler.

Would you have a recommendation on how I could ensure that I get each key zones accurately? I doubt that every pcm sound is a single sample stretched across. I am thinking of comparing waves in an editor to visually look for zone changes by transposing each note to the same note... not sure if this is correct.

Also is there a way (with a wav editor or simply by ear) where i would be able to tell which is the correct root for a given zone or if this would matter at this point..

I realize this is a bit esoteric but I would really like to give it a shot. I need to find a way to use these sounds without the hardware..

Thanks!

DSmolken · Post by **DSmolken** » Mon Sep 30, 2019 6:26 am

Apparently the samples are 16-bit PCM, so the thing to do would be dump the ROM. Perhaps somebody's already done a dump and you can find it. It's probably only 64 KB given the era it's from, and you can then match the output to the ROM sample content. You then have two options - emulate the filter etc. and use the actual original samples, or use the original samples as a reference point for where the center of each zone is.

With romplers you'll usually run into copyright or licensing issues with the samples, but for personal use it'll either be legal or you'll be able to get away with it anyway.

Edit: https://www.njohnson.co.uk/index.php?me ... submenu=13 - there you go, ROM links, disassembler for the code, and explanation of the contents, so you even get the code that the controller is running.

imrae · Post by **imrae** » Mon Sep 30, 2019 7:04 am

When sampling waveforms you want to match the playback rate and sampling rate as exactly as possible, so you aren't slightly truncating or extending the loop. Adventure Kid uses 600 samples for a note D2+2c, but doesn't mention which sample rate that is with. You'll have to figure it out with a note-frequency chart!

yul · Post by **yul** » Tue Oct 01, 2019 3:40 pm

Hey thanks guys! I have actually reached out to Neil for help it looks like he only has the ROM code for the OS (not the PCM). At this point I need to figure out which is the right root to sample on. Some patches have single cycle (easy enough) and others multiple zones (not layers though). Finding the zones and roots is my main challenge now as the pitching up/down may not sound the same.

MarcMarcud · Post by **MarcMarcud** » Sat Sep 11, 2021 12:23 pm

Could u please send me the sampled single "digital cyclic" waeforms and the othet samplef waveforms ?

Reverse sampling of vintage rompler (Kawai)