Audio device for improved sound reproduction

R.M. Aarts (Inventor)

Research output: PatentPatent publication

33 Downloads (Pure)


An audio device includes a first audio path with a loudspeaker for reproducing an audio signal, and a second audio path. The second audio path includes in series a band-pass filter for filtering an audio signal, a detector for detecting the amplitude of the band-pass filtered audio signal, a multiplier for multiplying a periodic signal by the amplitude of the band-pass filtered audio signal, and a vibration device for reproducing the multiplied periodic signal. The frequency of the periodic signal is substantially equal to the resonance frequency of the vibration device
Original languageEnglish
Patent numberUS8189809
Publication statusPublished - 29 May 2012


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