Analog recording

This enables later playback of the recorded analog audio.

Analog audio recording began with mechanical systems such as the phonautograph and phonograph.

[1] Later, electronic techniques such as wire[2] and tape recording[3] were developed.

The signal may be stored as a physical texture on a phonograph record, or a fluctuation in the field strength of a magnetic recording.

[4] These are in contrast to digital audio where an analog signal is sampled and quantized to produce a digital signal which is represented, stored and transmitted as discrete numbers.