Tuned sound elimination method and device, electronic device and noise elimination system

The invention relates to a tone elimination method and device, an electronic device and a noise elimination system, and the method comprises the steps: judging whether tone exists or not based on a 1/3 octave spectrum of to-be-processed sound data; if yes, determining sound pressure levels for perfo...

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Bibliographische Detailangaben
Hauptverfasser:	YAN TIANYOU, HONG WEIPING, LIU SONGLIN, BI CHAOHAO, ZHAO MIAO, DUAN FEI, ZHANG XIAOJIE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS SOUND-PRODUCING DEVICES
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Beschreibung
Zusammenfassung:	The invention relates to a tone elimination method and device, an electronic device and a noise elimination system, and the method comprises the steps: judging whether tone exists or not based on a 1/3 octave spectrum of to-be-processed sound data; if yes, determining sound pressure levels for performing sound compensation on the second 1/3 frequency band and the third 1/3 frequency band based on the sound pressure levels of the first 1/3 frequency band, the second 1/3 frequency band and the third 1/3 frequency band and a preset fixed sound pressure level; the difference value between the first 1/3 frequency band and the sound pressure level of two adjacent 1/3 frequency bands (the second 1/3 frequency band and the third 1/3 frequency band) exceeds 1/3 frequency bands of a preset fixed sound pressure level; and the loudspeaker is controlled to output sound with the intensity being the corresponding sound pressure level to perform sound compensation on the second 1/3 frequency band and the third 1/3 frequency