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A Hybrid Artificial Reverberation Algorithm

Convolution reverberation allows for an accurate reproduction of a space, but yields no flexibility in defining that space, while filterbank-based reverberation allows computational efficiency and flexibility but lacks absolute accuracy. A hybrid artificial reverberation algorithm that uses elements of both convolution and filterbank reverberation is investigated. An impulse response is truncated to contain only the early reflections and is convolved with input audio; the output audio then is combined with audio processed through a filterbank to simulate the late reverberation. The parameters defining the filterbank are derived from the impulse response being analyzed. It is shown that this hybrid reverberator can produce a high-quality reverberation comparable to convolution reverberators.

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