Sound waves that continuously vary, are pure and of perfect quality
Digital sound
Vibrations received by the microphone as a dynamic analogue signal, then converted into a discrete digital signal so it can be interpreted by a computer in terms of binary
Amplitude
The height of an analogue wave
Wavelength
The closeness of one peak to the next
Sampling
1. Recording snippets of sound at set intervals
2. A sample is a measure of the amplitude of sound waves over time
3. Each sample is digital and stored as binary data
Sample rate
The number of samples taken per second, measured in Hertz (Hz)
The more samples taken per second, the better the quality
CDs have a sample rate of 44.1 KHz
Bit depth / Sample resolution
The number of bits used to encode each sample
The higher the bit depth, the better the sound quality
The fewer bits, the less accurate and the lower the quality of the sound
