KHG T02
Selected recorded improvisations from a sunny morning and afternoon in the Hl. Johannes XXIII church.
situ.am/records
unedited recordings of experiments, real-time, in situ soundscape mediations
Faust on ESP32 A1S
testing faust DSP on an inexpensive standalone audio board: A1s Audio Dev Kit
- stereo line/mic in
- stereo out
- runs on lipo battery, includes charging circuit
-
built-in amps for 2x speakers
-
driver needed to recognize serial device on mac
-
https://www.diystompboxes.com/smfforum/index.php?topic=123939.msg1177779#msg1177779
Got it to work with following instructions found here and with bash scripts/modifying examples:
https://github.com/HolyCityAudio/ESP32/tree/master/faust
- downloaded, moved faust-build.sh and made executable as instructed, modified with serial port name.
To add potis:
MCP3008 - 8-Channel 10-Bit ADC
P0915N-FC15BR10K - 10K THT + Panel mount pot
SPI default pin mapping:
SPI | MOSI | MISO | CLK | CS
VSPI | GPIO 23 | GPIO 19 | GPIO 18 | GPIO 5
HSPI | GPIO 13 | GPIO 12 | GPIO 14 | GPIO 15
cut-up permuting sampler
(transcribed from voice memo, 2020-04-27)
record spoken phrase/percusive beats/etc into sample
detect transients by peak/threshold-following
trigger permutations of cut-up sample playback, eg:
abcdefg
gfedcba
abababa
fedfedf
optionally have multiple recordings of same phrase/beats, to add variety to chose from
- try with web audio
- progressive web app (saveable to homescreen, fullscreen, offline?)
Brüsseler Platz T03
[todo] get recordings from felix's zoom
- photos from thiago
- photo of marie
in a tree
short afternoon break to test a delay pedal, two hammocks happened packed, reface cp + moog synth app. echoes of khg plays.
next time: hang mics
hülle
on the train over:
- got the improved routing matrix interface working on the train over
- agreed to set felix up with a simple one-page site that creates annotation entries for recordings, editable by anyone (maybe password-protected)
- make appointments in nice places and get ready on the way...
balancing giving and taking in a space, active/passive, listening/sounding. cold and dark, still air, sensory deprivation.
testing routing matrix
testing small compact battery-powered setup: reface cp, marshall ms-2, ma
+
flexible routing into pitch shifters, slow changes
-
hard to see value of loudness in the router
idea:
- [x] changing interface so that holding down pad moves 'set value' to current value
- [ ] expose loop in-out-fade time
^ where the process of experimentation is more interesting than the recording itself, and the experience of the process reveals desire lines and areas for improvement
fft filter
on the way to a fft resynth
Orgelstunde
A serendipitous organ hour at the St. Michaels church in Brüsseler Platz. Standing in the middle of the church, kids play outside, filter through, reverberate. Victor switches the organ on, a low hum, a deep breath fills the space. Soft flutes tumble in, strings and bass sounds smoothly drift into eachother.
Victor invites us upstairs for an organ hour with the Baroque Synthesizer, displaying the voice options assigned to three keyboards, foot pedals, volume pedal, flexible coupling.
for next time:
- try a two stereoq-mic setup:
- in front of organ (in player's position) to capture wide stereo image
- in middle of church, for reverb, outside sound, trumpet
- felix free to move around the space with trumpet
mnmlma
testing the patch running running simply on iphone using built-in mic. the lightness and lack of cable connections afford an intuitive movement of the integrated mic as dry/wet modulation.
tapeshift~ = pitch -12, window ~100, delay ~100
process = adc~:tapeshift~:dac~
train to allgäu
a space in-between, a space on the way. mediating the loud train ride through a macbook microphone and earlier piano sample to test functionality of the patch accidentally re-situates the listening experience as active and real-time.
the presence of everything, nothing shouts importance ... quiet is quieting ... (Gordon Hempten)
routing matrix pt. 2
in situ slow-evolving conducting/scheduling
first thing in the morning, open up the routing-matrix patch from yesterday, pull in a looped piano recording.
filtered in feedback and filtered again.
route tapeshift~:dac~ 1 10000
X
|
metro 125
|
route sf~:dac~ 1 0; route sf~:dac~ 0 0 10
routing matrix
routing matrix with variable fade-time working
recordings feature prominent low-end ambience from traffic - how to use this? filter it out?
Wassermannsee
wind through reeds, loud ducks. off-recorder mics make cue-making (almost) silent.
Am Ginsterpfad
walking soundscape, slowly-changing filters as attention-prompts. elements:
- footstep rhythm
- how to deal with traffic drone?
pd in the park
how to work with droning car sounds? trying to reinforce/mask them with sinewave organ.
[pp.grainer~] T03 organ
testing sequencer with pp.grainer~ and KHG organ sample
process=khg-organ.wav:pp.grainer~
[pp.grainer~]<:([tapeshift~].[pan~].[fade~],2)
G01
ma jumps on piano loops
2020-06-04_221410
patch notes: two asynchronous loops, one ma loop
tapeshift~ delay on live input
would be nice: easy control of tapeshift~ volume (at least)
krupp gm7 and the dogs outside
testing chord with rhymthic 1/8 playpos jumping as carpet
listened through through schmalfußs tape-IR. consider feeding through, re-recording?
todo: add playpos-jumping module
2020-05-25_175236
past sound as rhythmic pulse
spring between random segments of the loop
every 1/8, jumping 1/8*lengthOfLoop * random(8)
2020-05-22_174851
1 mic in room with piano with loops and tapeshift
fix:
- [x] changing cycle length after buffer loop is made removes sound
todo:
- [x] autogenerate meta.md
- [x] include file automatically
- [x] include date automatically
- [ ] convert to mp3?
- [x] offer voice memo feature? /
- [ ] auto-open text editor with meta file?
Buffer Looper-Router
getting back to the launchpad-looper-router-interface, checking that it works as expected after a few days away. testing with a sample
patch notes: sample (taiwan-junglebirds.wav) looped, buffer looped, routed into tape-shift effect with feedback, starting to find something, hit record
todo:
- [x] get input routing working, so that can happen on the pad
- [ ] get resonanant filter+tapeshift also mapped to pad buttons
- [x] add record button to launchpad
mawamama t01
first take of improvising in dialogue with an active figure-ground delayline modulation feedback. the length of a sound-object (distinguished as a ‘figure’) modulates the length of a delayline such that sounds made in a room are fed back to the room at varying–controllable–later times. pitch-shifting artefacts of the moving delayline abound.
with heiwa wong, marie stremmel, david martens
Bozen
A handheld zoom capturing a waterfalls fed through Microbrute sequenced filter formed the basis for later keyboard overdubs.
