Turbochip - 7-channel YM+DMA replay

[FedePede04]

junosix : nice progress you are making...

DMA : great music piece you have done it..

[evil]

The odd thing is that my Mac shows < 20% total CPU usage when Hatari is stuttering. Still, must be something on my setup.

The stuttering does seem to settle down eventually after the first screen of playback.

Old Hatari releases uses SDL 1, which have very poor performance on macOS, especially with retina displays.
If you download v2.1 (http://download.tuxfamily.org/hatari/2.1.0/) it have have SDL2. Or you can try the very latest build from current source: https://troed.ddns.net/d/b90229b625/

Hopefully that's the problem.

Hatari 2.1 runs without any problem on my 8 year old Macbook Pro or 10 year old Mac Pro

[yerzmyey]

It's about a third of a VBL at the moment but that's because I haven't quite got my head around using addx in addition to swap, which will bring the VBL time down a bit then that could be brought down even more by going mono or 25kHz. It's sounding good enough now that I think I want to take it down the quality route rather than possibly compromising the sound for CPU performance.

You might do it optional / switchable. One might need a song for his game/demo, another dude might just want to make some music with his STE.

The project is excellent anywayz.

[junosix]

Made a music demo disk for easy enjoyment of the current TC tunes. (@dma - extended 'Faerie' by adding the keychange that I just can't help hearing in my head whenever I listen to it - hope you don't mind and that I haven't bastardised it by doing so!)

EDIT - v2, cleared up a couple of graphics errors and a stupid key input oversight, adjusted the volume of one of the tracks to match the others, and it now also works on 512KB machines.

[dhedberg]

Ah, cute! Love the sounds produced by your player!

[dma]

@junosix : Ah, a music-disk is indeed a nice way to promote your tracker.

Now i can hear what you were imagining as key change on my tune, cool.

[utz]

Just discovered this fantastic project. Thanks a ton @junosix, this might just be enough of an enticement to get me back into making ST(e) music.
Love the demo disk as well.

[dhedberg]

Just discovered this fantastic project. Thanks a ton @junosix, this might just be enough of an enticement to get me back into making ST(e) music.
Love the demo disk as well.

Please do! We need more people!

[MiggyMog]

Any update on this tracker now?

[junosix]

0.48 is still the current version (therefore still has the 'internal developer tool' vibe to the user interface, but I did use it to create the music for Droid Special Edition recently: https://www.atari-forum.com/viewtopic.p ... 64#p408664).

[matt]

Current version is working perfectly for me, too, no issues.

[Cyprian]

0.48 is still the current version (therefore still has the 'internal developer tool' vibe to the user interface, but I did use it to create the music for Droid Special Edition recently: viewtopic.php?p=408664#p408664).

may I have a few requests?
1) LMC mixer support - it's a strong and valuable part of the STE sound (like filters in SID).
2) Code for demoscene creators - would be cool to see new productions with Turbochip track.
3) Pouet.net - may I add Turbochip to the Pouet?

btw @junosix last week I had a pleasure to present your tracker to Polish Atari users and it was warmly received.

[elliot]

I am still not sure what it is doing, are you generating SIN waves for playback on the DMA?

[junosix]

may I have a few requests?
1) LMC mixer support - it's a strong and valuable part of the STE sound (like filters in SID).
2) Code for demoscene creators - would be cool to see new productions with Turbochip track.
3) Pouet.net - may I add Turbochip to the Pouet?

btw @junosix last week I had a pleasure to present your tracker to Polish Atari users and it was warmly received.

Saw your video about trackers on YouTube earlier today, thank you very much for the kind words and I'm glad you all found it interesting! I haven't done anything to Turbochip since that version, but I have recently been playing around with another synthesis method that I'm thinking can be added to it whilst still keeping it along the lines of classic 80s sound generation.

I did consider adding LMC support to Turbochip when I originally made it but I'm not sure it would be as useful as SID filters due to it affecting all the channels at once. Could be good for fading in/out a track though or setting the bass/treble controls to suit. Will give it some more thought - I think the unique selling point of Turbochip is it doesn't conform to the typical ST sound (there are plenty of excellent trackers that do that), but the LMC is still a cool chip so it could be nice to involve it somehow.

Will post some replay code in the next couple of days if it will be of use.

Feel free to add Turbochip to Pouet

I am still not sure what it is doing, are you generating SIN waves for playback on the DMA?

It works like a combination of a YM tracker with a MOD-type tracker running along side it, with the imposition on the sample playback MOD-esque side of things being that the samples are 32 bytes in length and always loop (using a phase accumulator so it doesn't reset to the beginning of the sample data when a new note is played). The only thing its doing in realtime is mixing the channels together, the waveform shapes are fully editable by the user but end-up pre-rendered before playback.

[metalages]

It works like a combination of a YM tracker with a MOD-type tracker running along side it, with the imposition on the sample playback MOD-esque side of things being that the samples are 32 bytes in length and always loop (using a phase accumulator so it doesn't reset to the beginning of the sample data when a new note is played). The only thing its doing in realtime is mixing the channels together, the waveform shapes are fully editable by the user but end-up pre-rendered before playback.

Your approach is not so different from mine

In particular when used like this https://youtu.be/jTW-htWG84A&t=374

More synthesis oriented.

https://github.com/jhubrt/MilkyTracker-fork
https://github.com/jhubrt/demOS/blob/ma ... /README.md

[elliot]

It works like a combination of a YM tracker with a MOD-type tracker running along side it, with the imposition on the sample playback MOD-esque side of things being that the samples are 32 bytes in length and always loop (using a phase accumulator so it doesn't reset to the beginning of the sample data when a new note is played). The only thing its doing in realtime is mixing the channels together, the waveform shapes are fully editable by the user but end-up pre-rendered before playback.

Okay, i think I understand in principle but your are out of my league with the understanding.

32 bytes sounds very short or am I wrong? Is that enough for a wave form?

[matt]

It's enough for a waveform and you can see it on the screenshots of the editor.