Preparing for audio processing

We have covered the procedures to prepare for audio input and output in Pure Data in Chapter 5, Motion Detection. Let us revisit the key points. We have to check the compute audio box in the upper-right corner of the console window:

The next step is to prepare the audio settings in the Preference panel. Choose Pd-extended | Preference | Audio Settings from the menu bar. Select the input and output devices, such as Built-in Microphone and Built-in Output, and the default sample rate to 44100. When transferring analog audio signal to digital, the sample rate controls how frequently the system takes samples of the audio signal. 44100 is the commonly used standard for audio files and processing. The measurement is in Hertz. It affects the fidelity and the file size of the audio information. Refer to the following screenshot:

Rather than clicking on the compute audio box in the console window, we can also include this action in the patch window. We can use a toggle...