Time-delay Estimation Based on Generalized Cross Correlation
Liu Zhi-kun · Audio Engineering · 2009
The acoustic source localization is usually accomplished by time delay of arrival of microphone arrays, and the precision and robust of time-delay algorithms is very important. Generalized cross correlation often used in time -delay estimation is studied in detail and simulated with different weight functions, and the results are compared. Then the spectral subtraction method used in speech enhancement is introduced to be pretreatment, and the generalized cross correlation is improved. The simulation is accomplished to prove the effectivity of modified algorithm. The result shows that it can satisfy the demand of noise environment.