Recorded in February 2024 as part of the RPM Challenge.

B LLOON S

Nine layers of tracks generated using a sorting algorithm on some sets of sine waves.

                              

sorted sines, I

A short bit of dry acoustic guitar, then a finger snap recorded in a stairwell, then the guitar bit convolved with the finger snap recording to add pseudo-reverb.  Convolution done using Csound.

stairwell reverb test

A little experiment with recursion in Csound.  Many, many layered sines.

csound recursion, I

Generative soundtrack to this video: https://vimeo.com/663827131 .
Made with Csound and processing.org.

Circles Pass Close

Many, many, many layers of acoustic guitar.

Emphasis Laid on Graceful Carriage

More experimenting with recursion in csound.  Each sound event triggers up to four more, generally later, events.  Some limiting added to keep it from going on forever...

Another Recursion

For Disquiet Junto 601, I threw a die in my bathtub and recorded the throws with an AT822 stereo microphone (through a Zoom H5) that I bought (used) years ago but had never used (I’m not really much of a microphone person).
Then, using Csound, I placed copies of each recording across about 3.5 minutes, with various densities, filtering, playback speeds and amplitudes.
The rolls determined for how much of the piece each recording appears: the rolls were 3,5,6,5,6,3, so the 6 rolls appear throughout, the 5’s appear up to 5/6 of the piece and the 3’s cut off at the half-way point.

More info on Disquiet Junto 601: https://llllllll.co/t/disquiet-junto-project-0601-hard-six/

Dice mix [ disquiet0601 ]

Made for Disquiet Junto 0604: https://disquiet.com/2023/07/27/disquiet-junto-project-0604-heavens-gate/ 

I rewrote from scratch my code to generate sounds from images in a "make the spectrogram like the image" way, and applied this to a bunch of photographs of clouds that I took.  The track is a mix of a bunch of the resulting sounds, done at two different "scales": one short in time and limited in frequency, and one less  so.

Clouds [ disquiet0604 ]

Many very small guitar bits layered over 5 minutes, going from a lot of silence to not quite so much silence and back to a lot of silence.

Made for Disquiet Junto 0607 https://disquiet.com/2023/08/17/disquiet-junto-project-0607-silence-wave/

Little Guitar Bits [ disquiet0607 ]

A buildup of a "beat", then a stretching of the percussive sounds, and addition of other sounds in rhythm.

More on this 619th weekly Disquiet Junto project, Beat Accrual (The Assignment: Rebuild a complicated rhythm from scratch), at: https://disquiet.com/0619/

Beat Accrual [ disquiet0619 ]

Recorded in February 2024 as part of the RPM Challenge.

A mix of very slowed-down field recordings I've made
of birds in my neighborhood recently. 
The roaring sound is Steller's jays, and the plaintive
sound heard twice is flicker.

The Jungle of 37th Avenue

Recorded in February 2024 as part of the RPM Challenge.

Experiments with a recursive composition idea: each sound
event triggers more sound events.  Made with Csound.

Recurse 1

Recorded in February 2024 as part of the RPM Challenge.

Experiments with a recursive composition idea: each sound
event triggers more sound events.  

Made with Csound.

Recurse 2

Recorded in February 2024 as part of the RPM Challenge.

This uses the same technique as track 1 (Pianno).
The source sound is harmonics played on my acoustic guitar
tuned to E flat/A/E flat/G/B/E flat.

Guittar

Recurse 4

Recorded in February 2024 as part of the RPM Challenge.

This started with a bit of code I wrote to generate quasi-chaotic
sounds, very noisy.  I then mixed the results "by hand", 
changing speed of playback, and doing other pretty standard
things to try to give the track as much variety as possible
(for a noise track).

Desperate

Recorded in February 2024 as part of the RPM Challenge.

Source sound was recorded inside a spinet piano I had access
to briefly in Gig Harbor, Washington.  

I cut the recording into chunks, then assigned two 
measures to each chunk (proxies for "pitch" and "loudness"),
thus mapping each chunk to a point in 2D space.
I then created a path connecting all of these points using
a greedy, nearest neighbor method.
The path then determined the sequence of the chunks in 
the output.
This was done with different chunk length, and possibly
different starting points, and the layers mixed together.

Pianno

Recorded in February 2024 as part of the RPM Challenge.

I wanted to see what repeated bits with changing envelopes
would sound like.  Lots of layers, a bunch of 
pitches all at a ratio of 4/3.

When it was done, I hacked it quite a bit to shorten it and
reduce monotony and then added reverb by convolving it with
a recording I made in a stairwell I know that has 4+ seconds
of reverberation.  I used my umbrella, and recorded the reverb
when I hit the floor with it.   You can hear the umbrella
hit a number of times in the track: I'm not sure why.

Enveloppe

More recursion-based composition experiments.

Recursion 2024-1

Ambient sound in the Seattle Pinball Museum, July 1, 2024. Recorded with a Zoom H2.

Seattle Pinball Museum (III)

Two sequential field recordings of quite a lot of crows in Seattle, February 2025.  Also traffic noise and at least one airplane flyover.  

Crows

A first draft attempt to convert the logistic map bifurcation diagram to sound.  The logistics map is f(x)=4Ax(1-x) where A is a real parameter between 0 and 1.  In this draft, the value of A is associated with time: as time goes forward, A ranges from 0.65 to 1 (in general for the logistics map it is reasonable to consider A from 0 to 1, but the sound is very simple and changes slow for A less than 0.65, so I've left that out).  For each A value, many x values are chosen and many iterations of f(x) are applied; the end result is used to calculate a frequency (linearly determined between 100 and 4100 hz) for a sound event at the time corresponding to the A value.

first draft: sound from logistic map bifurcation diagram

RPM2020                       

Rumble

Music for the video Less and Less Obtuse: https://vimeo.com/450910478
Acoustic guitar track, cut into piece and sorted by "smoothness".

Less and Less Obtuse

Alarum (whole lotta)

More Like a Cookie

Nine spread-out clusters of three different pitches.

RPM2021                       

Rust Smut Mildew Mold

A math person making and modifying sounds with custom code, Csound, homemade electronics.

Matthew M. Conroy

Pinned to spotlight

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