*Music Technology and The Project Studio: Synthesis and Sampling*

by Dan Hosken

## Chapter 2: Digital Audio

### Sampling Rate Demonstrations

### Sample Resolution Demonstrations

### Aliasing Demonstrations

- Sine wave sweep, sampling rate of 11.025 kHz (video). (Warning: LOUD!) Demonstration of aliasing with a sampling rate of 11.025 kHz. A single sine wave sweeps from 100 Hz to 11.025 kHz. Due to aliasing, the result appears to be a sine wave that sweeps up to the Nyquist frequency (5,012.5 Hz) and then back down.
- Sine wave sweep, sampling rate of 44.1 kHz (video) . (Warning: LOUD!) Demonstration of aliasing with a sampling rate of 44.1 kHz. A single sine wave sweeps from 100 Hz to 44.1 kHz. Due to aliasing, the result appears to be a sine wave that sweeps up to the Nyquist frequency (22.05 kHz) and then back down.
- 3-partial sweep, sampling rate of 11.025 kHz (video) (Warning: LOUD!) Demonstration of aliasing with a sampling rate of 11.025 kHz. A wave with three partials sweeps from 100 Hz to 11.025 kHz. Due to aliasing, the result is that the third partial "bounces" off the Nyquist frequency (5,012.5 Hz) three times, the second partial "bounces" twice, and the fundamental "bounces" once.
- 3-partial sweep, sampling rate of 44.1 kHz (video) (Warning: LOUD!) Demonstration of aliasing with a sampling rate of 44.1 kHz. A wave with three partials sweeps from 100 Hz to 44.1 kHz. Due to aliasing, the result is that the third partial "bounces" off the Nyquist frequency (22.05 kHz) three times, the second partial "bounces" twice, and the fundamental "bounces" once.