Measurement of Reverberation Times Using a Wavelet Filter Bank and Application to a Passenger Car
Measurement of the reverberation time of a passenger car compartment is important because it is a major parameter in determining the absorption rates of the absorptive materials used inside a car. However, it has been difficult to measure this reverberation time using a traditional method because the reverberation time is very short. A short reverberation time makes the value of the BT product of filter bandwidth B and reverberation time T small. In order to measure the reverberation time with accuracy using a traditional method, the value of this BT product has to be at least 16. To overcome this problem, the wavelet transform- based method using a wavelet filter bank, has been used for the measurement of very short reverberation times of a passenger car compartment, and the results are compared with the traditional method, which uses an infinite impulse response filter.
Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members, $5 for AES members and is free for E-Library subscribers.