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Class Information
Number: 381/1
Name: Electrical audio signal processing systems and devices > Binaural and stereophonic
Description: Subject matter where there are two or more independent sound signals which are to be separately reproduced so as to create a sense of depth.










Sub-classes under this class:

Class Number Class Name Patents
381/28 Amplifier 141
381/2 Broadcast or multiplex stereo 308
381/27 Center channel 156
381/23.1 Hearing aid 145
381/17 Pseudo stereophonic 792
381/19 Quadrasonic 202
381/26 Stereo sound pickup device (microphone) 161
381/300 Stereo speaker arrangement 299


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
8391500 Method and system for creating three-dimensional spatial audio Mar. 5, 2013
8391508 Method for reproducing natural or modified spatial impression in multichannel listening Mar. 5, 2013
8379874 Apparatus and method for time aligning program and video data with natural sound at locations distant from the program source and/or ticketing and authorizing receiving, reproduction and contr Feb. 19, 2013
8374357 Audio output device Feb. 12, 2013
8369531 Audio reproducing apparatus and method thereof Feb. 5, 2013
8369532 Device for and a method of processing an audio signal Feb. 5, 2013
8363842 Playback method and apparatus, program, and recording medium Jan. 29, 2013
8351852 Method for transmitting object between devices having multi-radio interface Jan. 8, 2013
8345883 Audio playback method and apparatus using line array speaker unit Jan. 1, 2013
8345899 Phase-amplitude matrixed surround decoder Jan. 1, 2013
8340322 Acoustic processing device Dec. 25, 2012
8340305 Audio encoding method and device Dec. 25, 2012
8340313 Wireless digital transmission of low frequency effects and surround channels for surround sound system Dec. 25, 2012
8331575 Data processing apparatus and parameter generating apparatus applied to surround system Dec. 11, 2012
8331570 Method and system for enhancing bass effect in audio signals Dec. 11, 2012
8325929 Binaural rendering of a multi-channel audio signal Dec. 4, 2012
8315396 Apparatus and method for generating audio output signals using object based metadata Nov. 20, 2012
8306231 Portable device with enhanced stereo image Nov. 6, 2012
8306232 Digital audio stereo imager Nov. 6, 2012
8306243 Audio device Nov. 6, 2012
8300833 Multichannel spectral mapping audio apparatus and method with dynamically varying mapping coefficients Oct. 30, 2012
8295494 Enhancing audio with remixing capability Oct. 23, 2012
8295496 Audio signal processing Oct. 23, 2012
8295493 Method to generate multi-channel audio signal from stereo signals Oct. 23, 2012
8290169 Time shifted harmonics generator Oct. 16, 2012
8284956 Method and system for enhancing bass effect in audio signals Oct. 9, 2012
8284957 Method and apparatus for stereo enhancement of an audio system Oct. 9, 2012
8280462 Distributed sound enhancement Oct. 2, 2012
8280077 Stream segregation for stereo signals Oct. 2, 2012
8270616 Virtual surround for headphones and earbuds headphone externalization system Sep. 18, 2012
8265283 Acoustic processing device and acoustic processing method Sep. 11, 2012
8259964 Sound device Sep. 4, 2012
8259952 Vehicle entertainment system having ground noise reduction and method of operating the same Sep. 4, 2012
8254583 Method and apparatus to reproduce stereo sound of two channels based on individual auditory properties Aug. 28, 2012
8254612 Sound system for portable electronic device Aug. 28, 2012
8243969 Method of and device for generating and processing parameters representing HRTFs Aug. 14, 2012
8243970 Virtual reality sound for advanced multi-media applications Aug. 14, 2012
8238589 Objective quantification of auditory source width of a loudspeakers-room system Aug. 7, 2012
8233629 Interaural time delay restoration system and method Jul. 31, 2012
8229143 Stereo expansion with binaural modeling Jul. 24, 2012
8223992 Speaker array apparatus Jul. 17, 2012
8223999 Speaker configuration Jul. 17, 2012
8218798 Sound processor Jul. 10, 2012
8215989 Audio jack with EMI shielding Jul. 10, 2012
8208639 Audio output device and audio output method Jun. 26, 2012
8204234 Apparatus and method for generating binaural beat from stereo audio signal Jun. 19, 2012
8199940 Audio reproduction system and speaker apparatus Jun. 12, 2012
8194863 Speaker system Jun. 5, 2012
8194884 Aligning time variable multichannel audio Jun. 5, 2012
8189795 Sound signal outputting device, sound signal outputting method, and computer-readable recording medium May. 29, 2012

1 2 3 4 5 6 7 8 9 10 11 12










 
 
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