Method for reducing parasitic vibrations of a loudspeaker environment and associated processing device
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United States of America Patent
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Sep 13, 2016
Grant Date -
Oct 9, 2014
app pub date -
Nov 6, 2012
filing date -
Nov 7, 2011
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Abstract
A method for reducing parasitic vibrations of a loudspeaker environment while maintaining the perception of the low frequencies of an original electric sound signal for broadcast after processing by the loudspeaker having a cut-off frequency. A vibration frequency band is identified that causes the loudspeaker to vibrate. A low frequency band of the original sound signal having a frequency close to the cut-off frequency of the loudspeaker is identified as an upper limit. At least one harmonic signal from the isolated low frequency band of the original sound signal is generated. The original sound signal and the harmonic signal are combined to obtain a recombined signal. The vibration frequency band is removed from the recombined signal to obtain a signal for broadcast by the loudspeaker.
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