Voice coding method, the system transmitter and receiver of the voice signal to encode and decode the input signal, decoder, mobile station and network element

摘要

"Encoding method of voice, the system transmitter and receiver of the voice signal to encode and decode the input signal, decoder, mobile station and network element.Method and system for encoding and decoding the input signal, where the input signal is divided into a higher frequency band and in a frequency band lower in processes of encoding and decoding, and the decoding of the higher frequency band is. Cutada using an artificial signal along with the parameters related to voice.Obtained from the frequency band lower. In particular, the artificial signal is spread before being turned into a broad band signal containing a noise artificial colored band of higher frequency and lower. In addition, the voice activity information is used to define the periods of voice and non voice periods of the input signal.Based on the information of voice activity, different weighting factors are used to scale the artificial signal in periods of voice and in periods of non voice.