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Class Information
Number: 381/71.4
Name: Electrical audio signal processing systems and devices > Acoustical noise or sound cancellation > Within cabin or compartment of vehicle
Description: Subject matter wherein the noise cancellation system cancels noise within a humanly occupied space of an aircraft, automobile, etc.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8712070 Simultaneous enhancement of transmission loss and absorption coefficient using activated cavities Apr. 29, 2014
8705753 System for processing sound signals in a vehicle multimedia system Apr. 22, 2014
8705761 Entertainment system and earphone Apr. 22, 2014
8682000 Method and device for narrow-band noise suppression in a vehicle passenger compartment Mar. 25, 2014
8666088 Tunable, sound enhancing air induction system for internal combustion engine Mar. 4, 2014
8634571 Active type acoustic control system Jan. 21, 2014
8625815 Vehicular rearview mirror system Jan. 7, 2014
8625812 Acoustic dampening compensation system Jan. 7, 2014
8625775 Method and system for reducing echo and noise in a vehicle passenger compartment environment Jan. 7, 2014
8607057 Secure outsourced aggregation with one-way chains Dec. 10, 2013
8588429 Sound device and sound control device Nov. 19, 2013
8577045 Apparatus and method for encoding a multi-channel audio signal Nov. 5, 2013
8565442 Noise reduction device Oct. 22, 2013
8559648 Active noise control using bass management Oct. 15, 2013
8542844 Sound modification system and method Sep. 24, 2013
8542846 Vehicle sound enhancing system and method of producing Sep. 24, 2013
8532828 Gearbox noise reduction by electrical drive control Sep. 10, 2013
8526627 Noise reduction device Sep. 3, 2013
8509452 Noise reduction apparatus and audio reproduction apparatus Aug. 13, 2013
8494175 Noise reduction device and noise reduction system Jul. 23, 2013
8472635 System and method for countering noise when operating an address system in a passenger transport Jun. 25, 2013
8462193 Method and system for processing audio signals Jun. 11, 2013
8451143 Vehicle presence notification apparatus May. 28, 2013
8421641 Object detection system and method using sub-sampling Apr. 16, 2013
8416963 System for providing a personalized driving sound Apr. 9, 2013
8401204 Method for the active reduction of sound disturbance Mar. 19, 2013
8384528 Method and apparatus for selectively varying motor vehicle sounds Feb. 26, 2013
8379879 Active noise reduction system Feb. 19, 2013
8378804 Active acoustic control apparatus Feb. 19, 2013
8374356 Noise canceling apparatus and noise canceling method Feb. 12, 2013
8340963 Echo suppressing system, echo suppressing method, recording medium, echo suppressor, sound output device, audio system, navigation system and mobile object Dec. 25, 2012
8335318 Active noise reduction adaptive filtering Dec. 18, 2012
8325938 Handsfree call apparatus, acoustic reproducing apparatus with handsfree call function, and handsfree call method Dec. 4, 2012
8315385 Digital entroping for digital audio reproductions Nov. 20, 2012
8306234 System for improving communication in a room Nov. 6, 2012
8300842 Robust system for sound enhancement from a single engine sensor Oct. 30, 2012
8285545 Voice command acquisition system and method Oct. 9, 2012
8280069 Noise reduction apparatus Oct. 2, 2012
8270625 Secondary path modeling for active noise control Sep. 18, 2012
8270627 Adaptive noise control system Sep. 18, 2012
8270628 Method and system for actively influencing noise, and use thereof in a motor vehicle Sep. 18, 2012
8259958 Engine sound control apparatus and control method Sep. 4, 2012
8260495 Method for reducing audible noise in a vehicle Sep. 4, 2012
8223985 Masking of pure tones within sound from a noise generating source Jul. 17, 2012
8213628 Listening device for clear perception of sound signals in a noisy environment Jul. 3, 2012
8208651 Active sound blocker Jun. 26, 2012
8208654 Noise cancellation for wireless audio distribution system Jun. 26, 2012
8208655 Wireless resonating surface speaker and method of using the same Jun. 26, 2012
8204242 Active noise reduction adaptive filter leakage adjusting Jun. 19, 2012
8199923 Active noise control system Jun. 12, 2012

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