- noun a way of storing sounds in an accurate, compact format that is used by high-end sound cards.
- modulation in which an analog signal is sampled, the amplitude of each sample is quantized, and then encoded as a digital signal for transmission. In order for the signal to be faithfully reproduced, the sampling rate must exceed the Nyquist rate. At the receiving end a decoder is utilized to recover the original information. Widely used to convert analog signals into digital form. Its abbreviation is PCM.