Audio Cookbook

Microtrack of Recycled Rhodes, Beats and Bass

Lovingly mixed on cheap ear buds, this micro track consists of a cut up chunk of low frequency Rhodes running through auto pan and a bit of amp modeling, out of key FM synth bass, and frosty beats that were partially programmed using the GMS (Gestural Music Sequencer). It’s not a habit of mine to mix blind (or would that be deaf?), so I hope there aren’t too many nasty surprises when I hear this through proper speakers.

Recycled Rhodes Microtrack

GMS Live Loop Experiment

Today while testing some code I had written to help lock in the GMS with external MIDI synchronization, I made a brief recording of live looping the output from the sequencer by capturing the notes in Ableton Live. Ableton was also acting as the clock source. The new feature works by initializing start times to the nearest quarter note. This way if the sequencer produces an odd number off fractional durations a simple start and stop of the GMS with the space bar will lock it back onto the quarter notes provided by the master clock. This may be a precursor to how I end up using this instrument once it is a complete package.

GMS Live Loop Experiment

Lofi Mono Glitch Loop

I looped a section of high speed GMS glitches, similar to what I’ve used in a few previous posts, to make this awkward pattern of percussion based micro-samples.

GMS Glitch Loop

Acoustic Modem Glitch

Here’s another glitch created with the GMS running at an unreasonably high tempo. This time it sounds a bit like the racket that comes from an acoustic modem as it makes a connection. Remember those things that people used to use to log on to the internets?

Acoustic Modem Glitch

GMS Audio Captured During MAW Outing

This eight minute segment of audio generated by the GMS is from the first eight minutes of our most recent MAW (minneapolisartonwheels.org) outing.

This was my first chance to take advantage of the presets feature, but the performance led me to expand the octave setting to include adjustments for the top and bottom octaves. During this performance the octave setting was limited to only allowing the top octave to be lowered. This made it so that instruments with a limited range, like drums, are difficult to play since much of the screen might be inactive.

MAW Outing Segment

Presets Feature Added to the GMS

The latest feature I have added to the GMS is a way to store ten presets. Each preset holds thirty-four distinct settings including all twelve note probability values, all seven duration probability values, note probabilities on/off, duration probabilities on/off, sustain on/off, free time mode vs bpm, dotted notes on/off, video mirroring on/off, tempo in BPM, note durations, transposition, scale, MIDI out channel, dotted note probabilities, note randomness, and octave range minimum and maximum. The presets can be changed by clicking a radio button, or pressing control plus the preset number. This feature makes it possible to instantly and dramatically change the behavior of the GMS. I also added a primitive save and load feature to mantain the content of the presets. Here’s a segment from a test recording.

GMS Preset Test Audio

More GMS High Speed Glitches

As I spend virtually every spare moment working on the GMS I’m looking forward to slowing down the development of this sequencer so I can start using it effectively, but for now I’m happy to create the odd glitch or space pad here and there. Here’s a glitchy segment of sound created by classic, channel ten drums at high speed.

GMS Drum Glitches

Electrical Crackling Sound with the GMS

This electrical crackling sound was made with the GMS while the tempo was set quite high and the note duration probability distributions were set to favor two adjacent values. The speed that the notes were played made the frequency of playing the notes more audible than the pitch of the individual sounds themselves. The randomized durations at that speed created a sputtering quality that, to my ear, sounds very similar to high voltage electrical sparks. Interestingly it turns out that the GMS might be useful for sound design as well as a composition and performance tool.

Electrical Sound

GMS Drum Solo

To create this silliness I set the GMS to play the drums on the built in Java Sound Synthesizer. I adjusted the tempo and duration probabilities to something ridiculous then captured the output on my PCM-D50. Since this experiment I have made a few more that are even more high speed and scattered. Perhaps I’ll post more examples of this nature. I have rare instances of longer durations inabled in the probability distribution, so as you’re listening, every so often you may think that it’s over (finally!) when suddenly it starts up again with obnoxiousness.

GMS Drum Solo

Sixty Fourth Notes from Twenty BPM to One Thousand and Back

I’ve already posted a few glitchy sounds created by the GMS in it’s various states of development. Most of them created by some bug, which I love. Serendipity never looses its charm for me. This sound is more deliberate and illustrates how sixty fourth notes sound played on a basic piano sample from twenty beats per minute all the up to nine-hundred and ninety-nine BPM. I’m not sure how accurately the GMS is reproducing these durations at tempos greater than five-hundred beats per minutes, but it sounds pretty wicked anyway.

From 20bpm to 999bpm and Back