Interestingly enough 188t is pretty close to Tritone's 192t, which seems to be kind of a sweet spot, as imo Tritone still wins hands down when it comes to smoothness of sound.

Edit: Got it aligned at 192t. 72t for ch1/2, 48t for ch3 - not the best for unbalanced volumes but perhaps good enough to fake some delay/echo.

wtbeep's loop is actually pretty tight already, just 184t. Perhaps it's actually too fast. Iirc channel 1 gets 56t and ch 2/3 get 64t, which might mean that their volume is too low to mask unwanted noises.

Come to think of it, at just 184t it should actually be possible to make this engine compatible with the +2A/+3. In the end we established it was a matter of masking bit 3, didn't we? Might also help to get rid of the hiss. Hmm I guess that could be a rather quick fix actually, if we don't care about 8t alignment.

Most of my new tunes are used in games so I try and use an engine that sounds good on all models. If the games are released on tape then there's a good chance collectors will have a +2/+2a model.
Phaser 3 seems the best choice for me at the moment for sound quality, compatibility and the fact the complied tune files are not massive.

So I thinking about possibilities to improve the latter issue. A couple ideas:

- Maybe do 3 sound loops, one is single channel, another is two channel, and the last one is the current three channel one. Tracker can adjust the pitch and set appropriate core per row. This will add a bit clarity, although maybe the hiss will get more noticeable, because it will be turning on and off all the time.

- Maybe make unorthogonal channels. Two with selectable waveforms, and one either a simple square tone (good enough for bass), or variable duty cycle tone. Should probably speed up the sound loop a little bit and make hiss less audible.

Another neat feature to have would be an unequal volume balance, maybe switchable on a per row basis, or two loud channels and one a bit quieter - would be good for echoing stuff. Not too sure if it can be done with the current design, though.

Detailed info is here: https://www.patreon.com/posts/lost-in-pseudo-1-28964800

Meanwhile I know what's up with that carrier hiss. Basically the issue seems to be caused by things leaking into bit 3 of port #fe. Which is by design in this engine, so can't be trivially fixed. Will try to rewrite the engine some day but have no time for it at the moment.

May come handy to someone - download here. It is a clean version, no carrier hiss there.

I also suspected the exx fix affecting that (like third channel counter value gets lost between rows), but didn't found obvious errors with it.