Open up example ‘Sample_rates_1.toe’. This example creates a very basic feature common in many audio applications: muting. This is achieved by using a Math CHOP to multiply the audio stream by the output value of a Button COMP, which is either 0 or 1. Like any other mathematical equation, a value, in this case each sample of audio, multiplied by 0 will always be 0. Similarly, a value, or audio sample, multiplied by 1 will be returned unchanged. These two states produce on and off states for this audio example.

This example takes the previous example and adds two Operators. The first is the Filter CHOP which smoothens the input value. This creates a smooth ramp between the two states of the button. The second is a Resample CHOP.

The above examples highlight the need to always be aware of the sample rates of CHOPs in a project, and to use the Resample CHOP when necessary. Many times, this situation will occur in regards to audio, but there are instances where control data might need to be input or output at a different sample rate.