Home | | Communication Theory | | Digital Communication | Companding of Speech signal

Chapter: Digital Communication - Sampling & Quantization

| Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail |

Companding of Speech signal

Compander = Compressor + Expander. In Non Uniform Quantizer the step size varies.

Companding of Speech signal:

 

Compander = Compressor + Expander

 

In Non - Uniform Quantizer the step size varies. The use of a non – uniform quantizer is equivalent to passing the baseband signal through a compressor and then applying the compressed signal to a uniform quantizer. The resultant signal is then transmitted.


At the receiver, a device with a characteristic complementary to the compressor called Expander is used to restore the signal samples to their correct relative level. The Compressor and expander take together constitute a Compander.

 

Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail


Copyright © 2018-2020 BrainKart.com; All Rights Reserved. Developed by Therithal info, Chennai.