SOUND SIGNAL FALSE LOCALIZATION SYSTEM, METHOD THEREOF, SOUND SIGNAL FALSE LOCALIZATION DECODING DEVICE AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To add sound signals from multiple points without impairing the presence in a multi-point communication conference system etc.;SOLUTION: In this system, an MS converting section 3 adds a first input signal to a second input signal to form an M signal, and subtracts the second input signal from the first input signal so as to form an S signal. An expanded false localization imparting section 1 calculates a decoded M signal S^o_M(t) and a decoded S signal S^o_S(t) defined by S^o_M(t)=S_M(t), S^o_S(t)=(N-2n-1)*S_M(t)/N+(1/N)*S_S(t), where a point number N≥2 is the total number of directions where localization can be imparted, point information n is the number of a direction where localization is imparted, the M signal is S_M(t) and the S signal is S_S(t). An LR converting section 2 generates the first output signal by adding the decoded M signal to the decoded S signal and dividing the sum by 2, and generates the second output signal by subtracting the decoded S signal from the decoded M signal and dividing the balance by 2.;COPYRIGHT: (C)2011,JPO&INPIT