Tero Parviainen

One half of @ctpt_studio. Building music systems for wellbeing and movement.

[Tero Parviainen @teropa]

We’re announcing something new today: Motif - music that moves with your yoga class.

Instead of static playlists, the music follows the structure and energy of a class and adapts on the fly.

[Tero Parviainen @teropa]

@jakepenn_ thx! runs about 11x real time for me here. offline use so it's plenty fast enough.

[Tero Parviainen @teropa]

Made a rather serviceable timestretching algo for drum loops with Fable, some web research, and a few rounds of listening.

Cut the loop at every hit, keep the hits sample-for-sample, and stretch only the decays between them. Separating noise and ring.

[the_simian @5imian]

We had better AI music 40 years ago. Beyond the musical/style errors others have noted, this is only impressive if you don't know the field. A Markov chain trained on Bach does better. That was our LISP "hello world" when I studied with David Cope 20 years ago
It really does suck

[Tero Parviainen @teropa]

@thepatch_kev yeah it does. i'm only using it for drums, and using rubberband-r3 warps for other stuff

[Tero Parviainen @teropa]

@thepatch_kev thx yeah performed well across our material, happily deploying it now

[Tero Parviainen @teropa]

@FrankTweets2026 yeh the slicing part of this goes all the way back

[Tero Parviainen @teropa]

@facesOfEth inverse is mildly cursed

[Tero Parviainen @teropa]

it's embedded in a bigger system, alas no standalone thing to download. but claude can probs do it from "Cut the loop at every hit and keep each hit sample-for-sample, so nothing smears. Only the decays between hits get stretched, in two parts: the noisy part (snare rattle, hats, room) by overlapping short grains, and the ringing part (kick body, toms, bells) by a phase vocoder that picks up in phase with the hit before it. Slicing is what DAW beat modes do and the noise/ring split is from Driedger, Müller & Ewert (2014); the combination is what made the tails clean."

[Tero Parviainen @teropa]

@loamyclay it's a good method, try and break things in interesting ways

[Tero Parviainen @teropa]

@tenshi_exe how very astute of you

[Tero Parviainen @teropa]

@alexanderchen Yeah, I love that you can now build some intuition without needing deep paper studies every time. Changes the opportunity cost economics.

[Tero Parviainen @teropa]

@akx 0 -> 0000000

sorted ✅

[Tero Parviainen @teropa]

@reallymeals thx! this "tufte skill" basically one-shotted the viz https://t.co/h3y1fCXlQ5

[Tero Parviainen @teropa]

more tonal material in a tabla loop

[Tero Parviainen @teropa]

Not invented from thin air: slicing is what DAW beat modes do. The noise/ring split is from Driedger, Müller & Ewert (2014).

[Tero Parviainen @teropa]

@bogdanspn yeah may have to go to recovery this doesn't look like it's ever going to finish

[Tero Parviainen @teropa]

you think software is solved. then spend an hour looking at this.

[Tero Parviainen @teropa]

@EllyDotMPEG honestly. "am i going to have to wait 5 more minutes or 5 more hours"

[Tero Parviainen @teropa]

*3 hours

[Tero Parviainen @teropa]

*2 hours

[Tero Parviainen @teropa]

@bogdanspn 🧘 there is no future nor a past. you're 100% there, always 🧘

[Tero Parviainen @teropa]

@RoyalCities The last hour will be installing a new progress bar algorithm I hope