Home / Communications / Companding


Vangie Beal
Last Updated May 24, 2021 7:38 am

Companding is formed from the words compressing and expanding. It is a PCM compression technique where analog signal values are rounded on a non-linear scale. The data is compressed before sent and then expanded at the receiving end using the same non-linear scale. Companding reduces the noise and crosstalk levels at the receiver.