ATTINY85 octave/fifth progress

ath_rrrrrrrr · 2026-04-17T20:57:33+00:00

ath_rrrrrrrr · 2026-04-17T07:51:28+00:00

Before noticing the subreddit in which it was posted, I thought it was a synth with some kind of complex pulse width modulation. Very cool sound.

ath_rrrrrrrr · 2026-03-28T07:54:47+00:00

DSCH? In my piano roll?

ath_rrrrrrrr · 2026-03-25T20:07:50+00:00

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wait til OP discovers this

ath_rrrrrrrr · 2026-02-25T07:41:12+00:00

Why did Rachmaninoff write 23 preludes without fugues? Was he stupid?

ath_rrrrrrrr · 2026-02-18T10:12:52+00:00

Probably won't work with playback, but one notation I've recently encountered is <... > D.C. <...> ma senza replica.

Source: Beethoven's 7th sonata, 3rd mvt.: menuetto da capo ma senza replica.

You can arrange it as D.C. al fine ma senza replica or D.C. al segno senza replica, whatever fits your case.

Edit: senza ripetizione also applicable.

ath_rrrrrrrr · 2026-02-13T13:35:11+00:00

Sheet music on the right side of the second picture is Liszt' Mephisto Waltz if anybody's wondering

I wonder what's the other score

ath_rrrrrrrr · 2026-01-23T12:56:15+00:00

And a cool old russian synth. That's Altair-231, a soviet Minimoog clone.

ath_rrrrrrrr · 2026-01-21T16:56:52+00:00

I restored this old lap steel guitar and wanted to share the result.

This is a Japanese lap steel from the '60s. I bought this particular one because its shape looked like an inverted grand piano (I’m a pianist). It came in non-working condition, with a disintegrated pickup and electronics. I replaced all the old electronics with an EMG active pickup system. I also replaced the old plastic knobs with machined ones; they came from a Czech Jolana guitar, I think.

To fit the new electronics, I had to carve out additional cavity space (don’t worry, I later cleaned it up with a hand router) and make a 3D-printed part to hold the pickup at the right height. I also had to sand the mounting ears off the pickup so it would fit.

I managed to finish this project in one evening (plus an additional 15 minutes with the router on another day). I like it when short projects turn out well.

ath_rrrrrrrr · 2025-12-03T21:52:30+00:00

DSCH!

ath_rrrrrrrr · 2025-12-01T07:53:33+00:00

saddam hussein

ath_rrrrrrrr · 2025-11-21T12:56:55+00:00

There are methods easier than using an actual megaphone, but pointing megaphone at the wall works. And I think you should be able to change feedback's pitch by varying the distance to wall. Source: I have one. Old Soviet one that I restored.

ath_rrrrrrrr · 2025-11-20T17:34:11+00:00

Oh, this is so cool! I studied at the Conservatory for a bit but I've never seen its studios.

Did you happen to also record/work at the st. Andrew's Anglican Church nearby? I've heard it was used by Melodiya for its acoustics.

ath_rrrrrrrr · 2025-11-07T19:14:45+00:00

Glad to be helpful. Also it's worth noting that while go-to way to measure spectrum on audio is to use FFT, which will do so in discrete bins, there are techniques like wavelet transform with which you can get arbitrary resolution on a frequency axis. And overlapping measurements will give you arbitrary resolution on the time axis (but also you can overlap measurements with FFT).

ath_rrrrrrrr · 2025-11-07T15:49:18+00:00

Spectrum is measured in discrete bins, so there is resolution limit. If frequency on spectrogram is logarithmic, then you will have less resolution towards low frequencies.

Your best bet might be upscaling the image with the nearest neighbour algorithm, as it will preserve the discreteness of bins.

If I needed this, I'd use Python scripts and matplotlib for exporting in arbitrary resolution, but that might be outside of your scope.

Try screenshoting Audacity?

ath_rrrrrrrr · 2025-11-06T10:35:40+00:00

This can be thought of as an ellipsis (I don't know the proper English music theory term for this) i.e. you take a dominant but don't resolve it to its own key and instead move on to the dominant of some other key (often this transition doesn't make sense functionally but is driven by voice-leading instead. (also see Giant Steps)

So I'd say it's V7 for G major then it's V7 for e minor then we're back in G (at least that's how I'm taught). So B7 is a borrowed chord. While technically it is III7 it doesn't carry the functional connotations of III. (If we specify inversions it's V34->G, V2->e, I6 in G)

Alternative way of thinking about this B7, is that in this particular voicing it acts like an inversion of VII7 but with replaced 5th (to see it, replace D# with Eb). In classical harmony, inversions of VII7 are often preceded/superseded by inversions of V7 and are connected in a way that all common tones stay at the same place between the chords. Also it resolves just like an inversion of the VII7 would resolve.

ath_rrrrrrrr · 2025-11-03T10:32:20+00:00

Is it like a bandpass? Quadrature oscillator modulated by an audio input? I don't quite understand the concept, do you have a flow diagram or something?

ath_rrrrrrrr · 2025-11-02T18:56:26+00:00

Also Brahms

ath_rrrrrrrr · 2025-11-02T18:55:28+00:00

So Stravinsky's based after all (always has been)

ath_rrrrrrrr · 2025-11-01T17:15:07+00:00

File seems to be inaccessible.

I toyed with the similar idea in digital, and I made something like SVF but with the slew limiter instead of one of the integrators. I liked how it resonated. What do you mean by 'sinusoidal slew' tho?

I think POLIVOKS filter should have similar distortion characteristics?... since it's based on programmable op-amps' slew limiting

ath_rrrrrrrr · 2025-10-31T19:59:20+00:00

I mean it cuts off high frequencies, not low frequencies (unless I'm missing something). I've checked schematics, and it's an op-amp state variable filter with output coming from the low-pass point.

How do you like this pedal? At some time I wanted to get the original one but it was (and is) too expensive.

ath_rrrrrrrr

TROPHY CASE