Calculation of IACC of Any Music Signal Convolved with Impulse Responses by Using the Interaural Cross-Correlation Function of the Sound Field and the Autocorrelation Function of the Sound Source
Binaural impulse responses (BIRs) are measured to clarify the acoustical characteristics of the sound filed in concert halls and opera houses. Since BIRs indicate the transfer function of sound rields, an anechoic source convolved with the BIRs represents the signal that listeners hear in that sound field. To find out the acoustical characteristics of the original sound source, it is useful to calculate the autocorrelation function (ACF) because the parameters extracted from the ACF closely relates to the subjective preference of listeners. It can thus be said that the convolution and the correlation are the most important calculative techniques in the room acoustics. This study investigates the relationship between sound sources and sound fields by comparing the interaural cross-correlation function (IACF) of BIRs and the IACF of an anechoic source convolved with the BIRs. The convolution and correlation are identical under a certain condition. In this condition, the interaural cross-correlation coefficient (IACC) of an anechoic source convolved with the BIRs can be described by the IACC of BIRs and by the effective duration τe of ACF of the anechoic source.
interaural cross-correlation coefficient autocorrelation function effective duration convolution
Ryota Shimokura Alessandro Cocchi Lamberto Tronchin Marco Cesare Consumi
Energy Management,Nuclear and Environmental Control Engineering Department DIENCA,Bologna University,Viale Risorgimento 2,40136 Bologna,Italy
国际会议
The 3rd International Symposium on Temporal Design(第三届时间性设计国际研讨会)
广州
英文
88-91
2007-11-02（万方平台首次上网日期，不代表论文的发表时间）