http://michaelnorris.info

Software

SOUNDMAGIC SPECTRAL

b0.6 ©2011 Michael Norris

Mac OS X 10.6+, Intel chips only.

SoundMagic Spectral is a FREEWARE suite of 24 Audio Unit plug-ins that implement real-time spectral processing of sound. This groundbreaking set of effects give you unprecedented control and creativity in the processing of audio, whether from static audio files or live audio streams. SoundMagic Spectral builds on the work of the OS 9 software known as SoundMagic DSP, and takes it to even more exotic sonic realms.

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au~

b2.0 ©2011 Michael Norris

A Max/MSP external that allows you to process a stereo audio stream using Audio Units.

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PC-set similarity calculator

v1.0 ©2014 Michael Norris

This Javascript allows you to calculate the similarity functions between a list of different set-classes. It uses a number of similarity functions that have been published in peer-reviewed journals. Most of the them have been covered in the 1990 article on pc-set similarity by Isaacson.

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Harmonic Series Calculator

v1.0 ©2002 Michael Norris

This is a little Javascript program that calculates the frequencies of partials in a harmonic series. You can also specify a stretch on the harmonics.

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Harmonic Series Calculator (List Version)

v1.1 ©2010 Michael Norris

This is a little Javascript program that calculates the frequencies of partials in a harmonic series, and returns the results in a tab-delimited list ready for pasting into Excel. A [+] or [-] after a note name indicates a microtonal deviation.

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Mode Finder

v1.0 ©2002 Michael Norris. Based on the MODE db

This is a little Javascript program that contains about 800 different melodic modes (equal-tempered only), categorized into different types.

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IPF Finder

v1.0b12 ©2006 Michael Norris

This is a little Javascript program that lets you choose a pitch-class set, and then returns a bunch of information about it, primarily drawn from Jenny McLeod's and Peter Schat's Tone Clock theory. Information returned includes the Intervallic Prime Form (IPF), the Forte Name, and the "dissonance". Much reference is made to Tone Clock theory, drawn from the IPF tables in Jenny McLeod’s “Chromatic Maps”* (based on Peter Schat’s work). At the bottom of this page is a glossary explaining (some) of the terminology. One day I'll get round to explaining everything... :-)

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Spectral Peak Listing

v1.0 ©2002 Michael Norris

This is a little Javascript program to produce a list of spectral peaks and their microtonal tunings, given a spectral analysis data file exported from Audacity, or a BPF file exported from Audiosculpt .

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Pitch-class Tessellation Finder

v1.0 ©2008 Michael Norris

This is a little Javascript program that determines every possible pitch tessellation for any-sized IPF within any-sized equal-tempered subdivision of the octave

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Frequency to Note Converter (List Version)

v1.0

This is a little Javascript program to convert a list of frequencies into a tab-delimited list of pitch classes (note name), with octave and cents deviation from 12TET, ready for copying and pasting into an Excel spreadsheet.

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Frequency to Note Converter

v1.0 ©2002 Michael Norris

This is a little Javascript program to convert an equal-tempered note name and octave into a frequency.

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L-System Generator

v1.0b2 ©2006 Michael Norris

This script uses a set of user-defined "rules" to substitute text from one generation to the next, in a manner that mimics natural growth and decay processes.

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