Method for reducing parasitic vibrations of a loudspeaker environment and associated processing device

摘要

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.

主权项

1. A method for reducing parasitic vibrations of a loudspeaker environment while maintaining a perception of low frequencies of an original electric sound signal for broadcast after processing by a loudspeaker having a cut-off frequency comprising the steps of:
identifying a vibration frequency band that causes the loudspeaker to vibrate; isolating a low frequency band of the original sound signal having a frequency close to the cut-off frequency of the loudspeaker as an upper limit; generating at least one harmonic signal from the isolated low frequency band of the original sound signal; combining the original sound signal and said at least one harmonic signal to obtain a recombined signal; removing the vibration frequency band from the recombined signal to obtain a signal for broadcast by the loudspeaker; and compressing a dynamic of a low frequency portion of the recombined signal with the vibration frequency band removed there from to increase a perceived power of spectral lines of the recombined signal located around the vibration frequency band.