Which compression technique provides near toll quality sound using 8kbps?

A.
Pulse Code Modulation

B.
Adaptive Differential Pulse Code Modulation

C.
Code Excited Linear Predictor

D.
It’s impossible to achieve near toll quality using less than 64 kbps.

Explanation:
CELP – is a voice codec compression also known as G.729 compression. This takes a voice stream and compresses it to an 8K stream that is comparable quality wise to 32k ADPCM.