When developing music software, you are operating under tight time constraints. The time between subsequent audio processing callbacks is typically between 1-10 ms. A common default setting is a buffer size of 128 samples at a sample rate of 44,100 Hz, which translates to 2.9 ms in between callbacks. If your process does not compute its audio output and write it into the provided buffer before this deadline, you will get an audible glitch, rendering your product worthless for professional use.
