Differing exports from .it and .mod files

[Corsaka]

It's worth nothing that I'm using schismtracker, a modern implementation of impulse tracker, for my .it file.

I used xmodits to export the audio files from the song "apoplexy.mod", as well as my "apoplexy-stereo.it" edit. The edit was created using the exact same instruments from the original .mod file. However, upon exporting these, the .it exports have a halved sample rate and are pitched down by an octave. I've attached a video that also shows this comparison.

2024-03-05.13-46-55.mp4

I've also uploaded both files to Google Drive for analysis, as I assume the problem exists within the files themselves. This isn't a pressing issue, as I can get the original samples from the .mod file, but it's likely worth looking into.

[B0ney]

Interesting.

Technically, the exported .it version has the correct sample rate. It's just that the frequency for exported .mod files are always doubled.

I did this because samples from mod files are always ~8000Hz, which sound low-pitched, but doubling it to ~16000Hz produces desirable results.

I think I could do the same thing for impulse tracker (and the other formats too). The frequency in the sample header represents C-5, so doubling it to C-4 should make things more consistent.

I'll do some experiments when I have time. But I think I could try to get the sample rate for all formats to match C-4.