Frequency Modulation synthesis is an effective technique for emulating acoustic instrumental sounds as well as for generating unusual new sounds.
In this technique we modulate the main waveform with another waveform. We can have multiple modulators and chain them in different algorithms to create evolving and rich sounds.
Access this patch in Max 8:
Help> References> Home> MSP Tutorials> FM Synthesis/Additive synthesis> Open tutorial
In most acoustic instruments, the timbre changes over the course of a note, so envelope control of the modulation index is appropriate for producing interesting sounds. A non-integer harmonicity ratio creates an inharmonic spectrum, and when combined with a percussive amplitude envelope can produce drum-like and bell-like sounds.
simpleFM~ is an example of an abstraction. While the patch is locked, if you double click on it, a new patch will open. In there, you will see an example of how to use inlets and outlet.
Inside the simpleFM~
Use this object to store and recall settings and parameters of a patch. Once you have your desired settings, SHIFT+Click on one of the squares to save that preset in there. You can recall those settings by just clicking on that square when the patch is locked.
Resize the object to have as many or as few as those preset slots (the squares).
Shift+Alt+Click on a square to delete its preset.
We can start simple by creating our own presets.
2. Within the FM synthesis patch, while locked, play along with these parameters until you find a sound you like:
3. After you found the sound you like, Shift+Click on a square to store that preset.
If you later want to delete that preset, you can send the preset object a message of : clear + number of the square
Ex: if i want to delete the 8th preset I would connect a message box with: clear 8
Send “clear all” message if you want to delete all of the presets.