Table 3 Mixture characteristics
Mixture | Mix. 7 | Mix. 8 | Mix. 9 |
|---|---|---|---|
NTT | NTT | NTT | |
Reverberation time T R | 130 ms | 130 ms | 130 ms |
Distance between two sensors d | 4 cm | 4 cm | 4 cm |
Sampling rate f S | 8 kHz | 8 kHz | 8 kHz |
Number of speakers N | 2 | 3 | 4 |
Number of microphones M | 2 | 3 | 4 |
Distance between speaker i and array center | L1 = L2 = 1.2 m | L1 = L2 = L3 = 1.2 m | L1 = L2 = L3 = L4 = 1.2 m |
Angular position of the speaker i | θ1 = 75° | θ1 = 35° | θ1 = 30° |
θ2 = 165° | θ2 = 80° | θ2 = 75° | |
θ3 = 165° | θ3 = 125° | ||
θ4 = 165° | |||
Mean input SIR in [dB] | 0.02 dB | -2.9 dB | -4.7 dB |