| 摘要 |
<P>PROBLEM TO BE SOLVED: To add sound signals from multiple points without impairing the presence in a multi-point communication conference system etc. <P>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<SP>o</SP><SB>M</SB>(t) and a decoded S signal S<SP>o</SP><SB>S</SB>(t) defined by S<SP>o</SP><SB>M</SB>(t)=S<SB>M</SB>(t), S<SP>o</SP><SB>S</SB>(t)=(N-2n-1)*S<SB>M</SB>(t)/N+(1/N)*S<SB>S</SB>(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<SB>M</SB>(t) and the S signal is S<SB>S</SB>(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. <P>COPYRIGHT: (C)2011,JPO&INPIT |
