README.md

Oscilloscope-Mushrooms

Oscilloscope Mushrooms using Linux Laptop Orchestra (L2Ork/purr-data/puredata), following Jerobeam Fenderson's "How To Draw Mushrooms On An Oscilloscope With Sound" (https://www.youtube.com/watch?v=rtR63-ecUNo)

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Building a Mushroom

Run the patch mushPanel.pd to load the presets for the steps below:

Step 1

Cos(f) on the vertical, sin(f) on the horizontal

Step 2

Add Sawtooth(f/n) to the vertical

Step 3

A: Horizontal multiplied by sin(f/n)

B: ...but only use the last quarter

Step 4

A: Sawtooth(f/n) multiplied by cos(f/n + x) added to horizontal

B: Sawtooth(f/n) multiplied by cos((f/n + x)/3) added to horizontal

Installing Pure Data

Pd (vanilla)? Pd-extended? Pd-l2ork? Purr-Data?

Pd (vanilla)

Version in the Raspbian repository, 0.46.2. Doesn't work with mushrooms.pd.

Pd-extended

Pd‐extended is a fork of Pd Vanilla, including extra features and external libraries. It's outdated, abandoned and there's no support.

Pd-l2ork

Linux Laptop Orchestra (Pd-l2ork) is a fork of Pd-extended.

Purr-Data

Version 2.0 of Pd-l2ork. Using this version on Raspberry Pi.

Downloads and instructions here:

https://github.com/agraef/purr-data/wiki/Installation#linux
http://l2ork.music.vt.edu

The Oscilloscope