Household active noise reduction seat and active noise reduction method applied to same

• Main Authors: MA LINGKUN, FENG ZHIRUI, LI ZHUOLIN
• Format: Patent
• Language: Chinese; English
• Published: 19.07.2019
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; BEDS; CHAIRS; COFFEE MILLS; DOMESTIC ARTICLES OR APPLIANCES; FURNITURE; HUMAN NECESSITIES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; PHYSICS; SOFAS; SOUND-PRODUCING DEVICES; SPICE MILLS; SUCTION CLEANERS IN GENERAL

The invention discloses a household active noise reduction seat and an active noise reduction method applied to the same. Indoor noise is converted into analog noise signals through microphones arranged at a headrest; the analog noise signals are sequentially converted into digital noise signals, secondary digital sound source signals, secondary amplified digital sound source signals and secondaryamplified analog sound source signals through an active noise reduction controller, and the active noise reduction controller is arranged on the seat and comprises a self-adaptive filter, a signal gain module, a digital-to-analog conversion module and an analog-to-digital conversion module; a secondary amplified sound source opposite in phase to indoor noise is outputted through loudspeakers arranged on two sides of the headrest; the secondary amplified sound source and the indoor noise are neutralized, so that active noise reduction of the household seat is realized, and great noise reduction effects are achieved. 本