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Class Information
Number: 381/300
Name: Electrical audio signal processing systems and devices > Binaural and stereophonic > Stereo speaker arrangement
Description: Subject matter including transducers for reproducing the sound signals, and the spatial relationship of the transducers to their surroundings.










Sub-classes under this class:

Class Number Class Name Patents
381/301 In furniture or clothing 108
381/308 In single baffle 34
381/302 In vehicle 142
381/303 Optimization 155
381/309 Stereo earphone 312
381/307 Surround (i.e., front plus rear or side) 226
381/306 With image presentation means 203


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8705750 Device and method for converting spatial audio signal Apr. 22, 2014
8705780 Audio apparatus, audio signal transmission method, and audio system Apr. 22, 2014
8687829 Apparatus and method for multi-channel parameter transformation Apr. 1, 2014
8682248 Method and system for reproducing contents, and computer-readable recording medium thereof Mar. 25, 2014
8675882 Sound signal processing device and method Mar. 18, 2014
8666106 Sound reproducing device Mar. 4, 2014
8660612 Electronic device having an NFC antenna in a speaker compartment and related methods Feb. 25, 2014
8638945 Apparatus and method for encoding/decoding signal Jan. 28, 2014
8634564 Signal processing device and method, and a program Jan. 21, 2014
8631327 Balancing loudspeakers for multiple display users Jan. 14, 2014
8619998 Spatial audio enhancement processing method and apparatus Dec. 31, 2013
8620009 Virtual sound source positioning Dec. 31, 2013
8611546 Method and apparatus for remotely switching noise reduction modes in a radio system Dec. 17, 2013
8605921 Loudspeaker positions select infrastructure signal Dec. 10, 2013
8605914 Nonlinear filter for separation of center sounds in stereophonic audio Dec. 10, 2013
8600084 Methods and systems for altering the speaker orientation of a portable system Dec. 3, 2013
8565455 Multiple display systems with enhanced acoustics experience Oct. 22, 2013
8565464 Audio conference apparatus Oct. 22, 2013
8553914 Apparatus for reproduction of stereo sound Oct. 8, 2013
8553895 Device and method for generating an encoded stereo signal of an audio piece or audio datastream Oct. 8, 2013
8542854 Virtual surround for loudspeakers with increased constant directivity Sep. 24, 2013
8526484 Content reproduction apparatus, content receiving apparatus, method of reproducing content, program, and content reproduction system Sep. 3, 2013
8526644 Beamforming system comprising a transducer assembly Sep. 3, 2013
8526662 Articulating speaker assembly providing for pivotal adjustment of connected first and second members Sep. 3, 2013
8520858 Sound system and method for capturing and reproducing sounds originating from a plurality of sound sources Aug. 27, 2013
8520883 Articulating speaker assembly providing for pivotal adjustment of connected first and second midrange members Aug. 27, 2013
8515082 Method of and a device for generating 3D sound Aug. 20, 2013
8509464 Multi-channel audio enhancement system Aug. 13, 2013
8509463 Multi-mode sound reproduction system and a corresponding method thereof Aug. 13, 2013
8494190 Audio signal processing apparatus and audio signal processing method Jul. 23, 2013
8494192 Audio reproducing system and method thereof Jul. 23, 2013
8483395 Sound field reproduction apparatus and method for reproducing reflections Jul. 9, 2013
8483775 Vehicle communication system Jul. 9, 2013
8472652 Audio reproduction system comprising narrow and wide directivity loudspeakers Jun. 25, 2013
8462966 Apparatus and method for calculating filter coefficients for a predefined loudspeaker arrangement Jun. 11, 2013
8457334 Audio apparatus, audio signal transmission method, and audio system Jun. 4, 2013
8457157 Digital communications system with variable-bandwidth traffic channels Jun. 4, 2013
8446126 Power bank apparatus with speaker May. 21, 2013
8437485 Method and device for improved sound field rendering accuracy within a preferred listening area May. 7, 2013
8433085 Video and audio output system Apr. 30, 2013
RE44170 Audio output adjusting device of home theater system and method thereof Apr. 23, 2013
8422704 Speaker array apparatus and method for setting audio beams of speaker array apparatus Apr. 16, 2013
8411883 Loudspeaker apparatus and speaker system Apr. 2, 2013
8391498 Stereophonic widening Mar. 5, 2013
8391521 Audio reproduction apparatus and method Mar. 5, 2013
8374357 Audio output device Feb. 12, 2013
8369558 Cup-shaped portable speaker with music player adapter Feb. 5, 2013
8369531 Audio reproducing apparatus and method thereof Feb. 5, 2013
8363865 Multiple channel sound system using multi-speaker arrays Jan. 29, 2013
8363847 Device and method for simulation of WFS systems and compensation of sound-influencing properties Jan. 29, 2013

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