Delay with tempo-relative timing

The delay attribute (the delay time) of a delay~ object can be specified with tempo-relative timing (such as ‘notevalues’) instead of samples. This example shows a delay time of a dotted eighth note rhythmic value, at whatever the current transport tempo is. The transport tempo is 120 bpm by default; a dotted eighth note at that tempo will last 375 ms which, at a sample rate of 44100 samples per second, is 16,537.5 samples.

Polyphony requires multiple objects

Any given MSP patch cord represents a single channel of audio. If you want to generate or process multiple sounds or channels, you need to treat each sound or channel separately. For example, each sfplay~ object can have multiple loaded sound cues so that it's ready to play any one of several files, but it can only play one sound file at any given instant. And if it's a stereo file you need to treat each channel separately for mixing, processing, etc. This patch demonstrates that.

Variable-mode filter demo

This patch allows you to try out various filter settings of the biquad~ object, via the filtergraph~ object. For adjusting the parameters you can drag on filtergraph~ with the mouse, or you can send values in its three rightmost inlets for frequency, gain, and Q. The spectroscope~ object tries to draw the spectrum of the signal.