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MSP modulators / filters (lpfixed~.c lp1~.c)

• PD home page (Miller Puckette)
• PD externals at CCRMA
• HOWTO write an External for puredata (johannes m zmölnig)

Assignments

Assignment #8 (Due Dec. 6)

• Write dft~ and idft~. Note that this will only work with small vectors (dftTest).
• Write myfft~ and myifft~ (2 inlets & 2 outlets). Note that you have to be careful with the scaling factor (there's a bug in the handout). (Max signal vector size: 2048.)
  Reference: FFT section in Numerical Recipes

• Write a clone (alea~) of MSP object rand~ that linearly interpolates between two random numbers generated at the specified frequency.
• Write an amplitude modulator object: am~. Should have three float or signal inlets: carrier frequency, modulating frequency and tremolo depth.
• Write a frequency modulator object: fm~. Should have three float or signal inlets: carrier frequency, harmonicity ratio, modulation index.

• Write an oscillator with multiple harmonics with a list (and in the arguments) specifying strength of each harmonic. Be sure to normalize.
• Write an oscillator with multiple harmonics (number of harmonics specified in the argument). Strength of each harmonic should be dynamically changed with inlets. Automatically adjust the overall gain. Overall phase should be adjustable. Create one wavetable once at creation.
  (Examples)

• Write a clone (entonnoir) of Max object funnel (dynamically allocate structs that will store information for each inlet)
• Write a clone (mydiv~) of MSP /~ object
• Write a clone (myspike~) of MSP spike~ object (determine if the outlet outputs are scheduled)

• Write a clone (delai) of Max object delay
• Write a clone (tuyau) of Max object pipe; do not need to use proxy and the "clock" message need not be implemented
• Write meter_metro
  • Bang out on every beat from different outlets, up to 8 beats per measure. Default to 4.
  • Start and stop via toggle or "start" and "stop" messages
  • First argument: number of beats, second argument: tempo in beats per minute (both optional, but allow for first argument only)
  • Right inlet, beats per minute (int or float)

Write the following Max object clones:

• tondre (clip) [use outlet_new() and outlet_list()]
• ivre (drunk) [use random()]
• moyen (mean)

Write the following Max externals:

• mult object that is similar toMax built-in * object including the same assist messages (integer only)
• div object that is similar to Max built-in / object with assist messages, (floating point only)
• power object that is similar to Max built-in pow object (integer and floating point)

Place copies of your project folders (project files, source, the object, and a test patch) on your web site (use Finder:Find:Create Archive to create a zip file).

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Build a simple homepage on www.music.mcgill.ca:

• Basic personal info
• Links to your classes
• Place to post your assignments

1. From your home directory, got thesubdirectory called: public_html (cd public_html)
2. Edit the html file index.html (pico index.html)