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Loudspeaking Dialog System by Small Acoustic Echo Canceller

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A small and high-performance hands-free dialog system by a microphone and a loudspeaker was developed for audio or multimedia systems. It uses only one DSP chip of a fixed point calculation. A new algorithm, called as "Polarized-x INLMS", developed for this system, is the key technology to shrink rather complicated signal processing systems for it.

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