Archive for the ‘found sound’ Category

Step 11 (Harmonic Series)

Wednesday, October 8th, 2014


Step 11 is an ambient composition using field samples I made, wrought iron triangle and Sonic Coulture’s EP73 Deconstructed and Scriptorium for retuning to 7 limit just intonation and unoctave reduced harmonic series. William Victor Newbold appears in a cameo guest appearance courtesy of SoOn multi-arts.

Prepared Aeolian Harp – Steel Plate

Sunday, August 31st, 2014



The Prepared Aeolian Harp is going to be a series of modifications – like the 3rd bridge post. This modification was inspired by the harp picking up a tornado warning siren by sympathetic vibration. The reasoning here is that the steel plate offers more surface area and would be a more sensitive detector. To some extent this is correct. The harp has become very sensitive to foot steps even in the back of my home. (Those are just “thuds” and more from the large mass of the plate vs the pickups I suppose) and I saw and just heard in one spectral view a car motor. Since this is new there needs to be some optimization. The current file displayed here is almost entirely due to wind – on a day with very light (<5 mph) breezes coming from over my home to the back of the harp - the worst possible angle. So I am looking forward to the experience of having a windy day and a more favorable wind direction. Even at these mediocre conditions the harp pickups can be easily overloaded and I am recording with compression on (applied after this recording) to prevent spikes. The plate is about 6" x 18" and 32nd" and is mounted by weaving the plate into the existing strings.

sympathetic siren capture

Tuesday, August 12th, 2014





This is a unique phenomenon with the electric aeolian harp. Last Friday the strings of the harp were close enough in pitch to ring sympathetically with the 11 am tornado siren test. In the first file you can clearly hear the siren go up in pitch and hold. In the second file you can hear the siren wind down but less clearly. In effect the aeolian harp was a microphone, albeit a very elaborate one. The spectrograms can be enlarged by clicking on them. The files are noisy because I normalized a low strength signal, which it to be expected in a situation like this. I am hoping to put together a sympathetic microphone in the near future because I want to explore this tangential acquisition of sound.