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Having trouble with the Ear Shaver EX engine.

- When entering data at the loop start position, I get the good old "Engine not provided any data" error, with the addition of

Z80Ass error: label already defined!
Z80Ass error: label already defined!
 706: .loop
 706: .loop

printed to the console, and a single copy of this printed in the GUI.
- Sample import does not work, drums do not play any sound.
- Tempo seems completely messed up, I need values of at least 40 tpr to get any meaningful row length. Also, the drums seem to affect this - rows play a different length depending on the drum. The global tempo setting on the other hand seems to have no effect whatsoever.
- The new mml-style envelope editor is unusable with a qwertz keyboard, since | and * are not recognized (reading your last post on MuzCell I think you found a solution to this already, but thought I'd mention it anyway)

Huh, I never realized that 1tracker was actually released around the 30th anniversary of the Spectrum. Anyway, congratulations on 10 years of what I still consider to be the best tracker in the world.

Regarding whether to switch to an external assembler, I'd say it ultimately doesn't solve the problem at hand. Yes, it'll get you support for a range of platforms without too much trouble, but eventually you'll discover some other obscure platform you'd want to support (Sharp PC cough cough) and find that wla-dx or whatever you chose doesn't suppport it, so you're back to point 0. Secondly, if you're going to link in wla-dx, then 1tracker can't be WTFPL anymore. And that would be sad. Anyway I think it's better to invest time into building a custom extensible multi-target assembler. I believe it's a manageable amount of work.

Regarding pattern-less vs traditional, I'd argue that the pattern-based approach represents a local maximum - it's good, but it's ultimately sub-optimal. Therefore it makes sense to continue innovating with a pattern-less approach in 1tracker. I think showing that a different approach to tracking is viable is actually one of the project's main achievements. That said, I believe it's possible to implement a pattern-less abstraction on top of a pattern-based implementation, if you ever want to go down that route. Probably not worth the effort, though.

Thanks, great to see the beeper love continue down under. Also, looks like you're living in a really nice place.

I think I can support the Vtech machines fairly easily in bintracker, btw. Not sure when I'll get around to it though.

At this rate you'll have polyphony figured out before us, hehe.

It seems you missed the attachment. The system is a bit stupid, you have to first select the file with the Browse button but then also hit the Add File button.

Aye, that looks... pretty bad. I'm actually surprised to see such a result from a resistor ladder. But good to know, thanks a lot for investigating.
One question, looks like there are nine pulses, but I would expect 8, with the first one being silent. Do you know what's going on there?

In any case, I'm afraid I won't get around to this any time soon. And first we need to emulator to emulate sound correctly, anyway.

No worries, I didn't do any work on Shiru's PET player, I just happened to work on some PET stuff at the same time.

Yes, we'll definitely need proper sound emulation. Either way I guess you've just signed yourself up for some beta testing if we get around to coding something

Thanks a lot for another fantastic installment in your "Understanding Computer Sound" series. The amount of work you put into these is mindblowing.
Also yes, you totally convinced me that I want to program aunt Lisa. I think both Shiru and me still have nightmares from working with PET and 6522, but in theory it's a pretty good setup. 68k @ 5MHz is a bit meh, but not too bad considering the other goodies. 3-bit volume control on top of that is excellent. In my head, that translates to 8 channels polyphony already, hehe. However, from the video it sounds like the upper end is somewhat compressed, ie. the increase in volume is not linear. Could you check that with your oscilloscope?

Ha, that's great, have fun with it! Btw I got most of my 2.5mm cables from flea markets, since those are used by a bunch of old chinese crap phones and such. Alternatively you could try to mod to 3.5mm: https://github.com/utz82/HoustonTracker … mage2.jpeg

And yes, I should probably amend the manual to recommend Windows user go down the TI-Connect path at this point, since it's become more and more tricky to make TiLP work on Windows. The only problem is that TI-Connect does not work with TI-82+SilverLink.

Ok, give this version a spin and let me know what you think. Sound loop is 4t longer and outputs are not 8t-aligned, but to my ears it doesn't seem to matter much. Drum timing correction probably needs to be adjusted but I think it wasn't correct to begin with.

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.

EXcellent work, Multicore is great, even better that you managed to press it into a form that works inside a tracker. I only had a quick play with the engine but it seems a lot of fun. I do hope you'll continue to explore the whole Earth Shaker concept. One more channel, resp ES modulator perhaps? I think I tried that once and that brings you into byte beat territory pretty quickly. On the other hand I think this is a good time for me to go back to using a two-channel engine, haven't done in ages actually.

Great find! Yeah, phase control is definitely a very powerful tool in the 1-bit world. I still got this idea in my head to use phase inversion/offset to make a sample player. Wasn't too successful I tried the last time, though. There are two problems, first of all beeper is too noisy for low volumes, and secondly volume control via phase offset is non-linear, which makes it tricky to use in a controlled manner.

Btw, did you ever pursue this idea of yours further?

Good find. I've used xor phasing on >1bit signals in a couple of engines, but it never occurred to me that the effect strength could be controlled in this way. Very cool.

Btw, shouldn't it be possible to implement ring modulation like this?