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Method and apparatus to equalize acoustic response of a speaker system using multi-rate FIR and all-pass IIR filters
Method and apparatus to equalize acoustic response of a speaker system using multi-rate FIR and all-pass IIR filters
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机译:使用多速率FIR和全通IIR滤波器均衡扬声器系统的声学响应的方法和装置
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摘要
A speaker system includes an electronic signal processing unit configured to split an input audio signal into a low-pass audio component and a high-pass audio component. The electrical signal processing unit includes a multi-rate finite impulse response (FIR) filter configured to downsample the low-pass audio component and sample the downsampled low-pass audio component at a first sampling rate lower than a second sampling rate used to sample the high-pass audio component. The speaker system further includes an electronic adaptive equalizer coefficient (EAEC) module configured to dynamically determine at least one equalizer coefficient based on a signal characteristic of the input audio signal. An electronic filter coefficient update unit (FCUU) is included and is configured to control a frequency response of the speaker system based on the at least one equalizer coefficient.
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