FT2 v1.99 interpolation suggestion

[psycodeoday]

I made music in years 1996-2000 on FT2 in DOS, and I'm now very surprised that Linear (FT2) has that strong suppression effect on very highs. Maybe it was like that - so I will not argue, but

It is hard to please the ears when No Interpolation mode (which I love), with some modules sounds a little bit too bright, too sharp, too crispy and too harsh
and with Linear (FT2) mode - too muddy, too warm, too dark. It has too strong cut-off on very highs. it almost sounds like low quality music.

So the jump between those two is too strong, when compare it to rest of the modes.
there is NOT so much dramatical difference (for the ears!) between Quadratic spline, Cubic Spline, Sinc (8 point) and Sinc (16point)

and with Sinc 8/16 I hear somekind of sound artifacts on some modules, like strong mp3 compression sideeffects.
So for me Sinc 8 or 16 is a way too far with that "goodies" on modules, no matter how pretty and excited they are on paper in theory.
.
.
So my suggestion is that.

-to save a free slot / space, please consider removing Sinc 16 point at all (No that much difference comparing to 8)
-then move whole stack down to have a gap between No interpolation and Linear (FT2)
-then please add, introduce, a new one there, which sounds like a sweet compromise between those two.

That could be perfect. I really miss that in between mode.

BTW.
When I find free time, I will try to take my old PC from 1993: 386DX 40MHz 4MB RAM, with Gravis Ultra Sound soundcard from the basement and will check modules on original FT2 in DOS to see if that Linear (FT2) gives soo much warm/dark effect.

Thanks.

[8bitbubsy]

Linear interpolation has that same treble filtering effect on real FT2 (with SB16+Linear or with GUS) as well, that's just how 2-point linear interpolation is when used on audio.

Also, there is an audible difference between sinc-8 and sinc-16. It's subtle, but if you have good audio equipment and high quality samples, you will hear even less treble filtering with sinc-16.

The "compression" effect you're talking about with sinc, is the fact that sinc interpolation is more like a "brick-wall" filter; its low-pass filter slope is so steep that lo-fi samples will sound very dull and filtered. In a way, sinc is so good that lo-fi samples will reveal their weakness. This is all mentioned in the help section in the FT2 clone (Help -> How to use FT2), I suggest you go read it. It talks about how certain interpolation settings are better suited for different modules.