INJECTION HIGH FREQUENCY NOISE INTO PULSE EXCITATION FOR LOW BIT RATE CELP

摘要

This method for speech coding comprises generating (602) an excitation signal by use of at least one pulse codebook (202, 204) applied to a speech signal (s(n)); and providing a high frequency enhancement (610) of the excitation signal based on one or more criteria. In the method the one or more criteria includes an energy content of the speech signal.