Title :
Location Classification of Nonstationary Sound Sources Using Binaural Room Distribution Patterns
Author :
Hu, Jwu-Sheng ; Liu, Wei-Han
Author_Institution :
Dept. of Electr. & Control Eng., Nat. Chiao-Tung Univ., Hsinchu
fDate :
5/1/2009 12:00:00 AM
Abstract :
This paper discusses the relationships between the nonstationarity of sound sources and the distribution patterns of interaural phase differences (IPDs) and interaural level differences (ILDs) based on short-term frequency analysis. The amplitude variation of nonstationary sound sources is modeled by the exponent of polynomials from the concept of moving pole model. According to the model, the sufficient condition for utilizing the distribution patterns of IPDs and ILDs to localize a nonstationary sound source is suggested and the phenomena of multiple peaks in the distribution pattern can be explained. Simulation is performed to interpret the relation between the distribution patterns of IPD and ILD and the nonstationary sound source. Furthermore, a Gaussian-mixture binaural room distribution model (GMBRDM) is proposed to model distribution patterns of IPDs and ILDs for nonstationary sound source location classification. The effectiveness and performance of the proposed GMBRDM are demonstrated by experimental results.
Keywords :
Gaussian processes; acoustic generators; acoustic signal processing; polynomials; signal classification; Gaussian-mixture binaural room distribution model; interaural level differences; interaural phase differences; location classification; model distribution patterns; nonstationary sound sources; polynomials; short-term frequency analysis; Auditory system; Frequency; Gaussian distribution; Helium; Humans; Pattern analysis; Polynomials; Position measurement; Sufficient conditions; Transfer functions; Head-related transfer function (HRTF); interaural level difference (ILD); interaural phase difference (IPD); sound source localization;
Journal_Title :
Audio, Speech, and Language Processing, IEEE Transactions on
DOI :
10.1109/TASL.2008.2011528