Incorrect pitch using the OPNB2 soundchip

[MissileShark24]

Hello! I've been trying to utilize the ADPCM part of the OPNB2 sound chip. No matter what I do the pitch of any sample whether it be a kick or snare would sound incorrect. I don't believe it stems from a glitch but rather my limited knowledge of utilizing the samples. Initially, I used the sample map feature but that didn't work. I tried referencing from other demos whether they had utilized the OPNB2 or the OKIMSM6295 (It's not an issue if I set the clock to 2MHz). The DAC is not a problem as I could do it freestyle without the pitch sounding off. The samples that I've described are formatted as 16-bit PCMs. I changed the format to 8-bit PCMs and the same issue would pursue. I also tried changing the note pitch in the sample editor but that didn't work either. If anyone has any tips it would be appreciated. Thank you for reading this post.

[IceDragonDee]

ADPCM A can't change pitch. it's a fixed frequency at around 10KHz(?)

[freq-mod]

18.5 khz

[IceDragonDee]

Gotcha

[MissileShark24]

18.5 khz

Is it for the custom clock rate or the sample editor? Where can I use it?

[Toonlink8101]

18.5 khz

Is it for the custom clock rate or the sample editor? Where can I use it?

18.5 KHz is the rate at which the OPNB and OPNB2 play all samples on their ADPCM-A channels. If you want your sample to sound right, you will need to make sure that your sample's sampling rate is 18.5 KHz (18500 Hz); otherwise, it will sound detuned. In Furnace's sample editor, this will be the Hz value of the sample.

Don't worry about changing the clock rate. If you want your music to playback on hardware, use the default clock rates