VOICE ENCODING DEVICE, AND VOICE ENCODING METHOD

摘要

A voice encoding device capable of generating a modulated proper monaural signal enriched in clearness and understandability, when the monaural signal is to be generated from a stereophonic signal. In this device, a weighting unit (11) weights an L-channel signal (X L ) and an R-channel signal (X R ) individually, and inputs the weighted L-channel signal (X LW ) and R-channel signal (X RW ) to a monaural signal generating unit (12). This monaural signal generating unit (12) averages the L-channel signal (X LW ) and the R-channel signal (X RW ), and creates and inputs a monaural signal (X MW ) to a monaural signal encoding unit (13). This monaural signal encoding unit (13) encodes the monaural signal (X MW ), and outputs an encoding parameter of the monaural signal (X MW ) (or a monaural signal encoding parameter).