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An Improved Adaptive Room Equalization in the Frequency Domain

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This paper presents several improvements that have been introduced on the design and operation of an adaptive 20-band room equalizer. The equalizer is implemented on a TMS320C6711 DSP platform and performs fast FIR filtering in the frequency domain. In order to reach fast adaptation to time-varying acoustic conditions, several adaptation rules operating in the frequency domain have been evaluated and the impact of a frequency-varying step-size parameter on the convergence rate has been studied. These results will be presented along with ideas and plans for future developments.

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