Patents for H04R 5 - Stereophonic arrangements (11,598)
02/2001
02/14/2001CN2419776Y 四声道耳机 Four-channel headphones
02/13/2001US6188775 Panel-form loudspeakers
02/13/2001US6188771 Personal sound masking system
02/13/2001US6185809 Method of manufacturing a diaphragm for an electroacoustic transducer
02/07/2001EP1075164A2 Headset noise reduction
02/07/2001CN2418640Y Plane loudspeaker fixing device
02/07/2001CN1283066A Cross complementing sound enclosure with lower limitation of cavity frequency and low distortion
01/2001
01/31/2001EP1073315A2 Acoustic crosstalk cancellation system
01/31/2001EP1072089A1 Audio signal processing method and apparatus
01/31/2001CN2417654Y 耳机转换器 Headphone transducer
01/31/2001CN2417653Y Wire intaking type earphone and speaking trumpet unit
01/31/2001CN2417652Y Structure for arrangement and up/down adjustment of loud-speaker
01/31/2001CN1282444A Method and system for processing virtual acoustic environment
01/30/2001US6181799 Greetings or the like card
01/30/2001US6181797 Piezo speaker for improved passenger cabin audio systems
01/30/2001CA2076288C Microphone and loudspeaker system
01/29/2001CA2314374A1 Acoustic crosstalk cancellation system
01/24/2001EP1071309A2 Headphone with adjustable localization of the sound presentation generated by it
01/24/2001CN2416703Y Active loudspeaker box
01/24/2001CN2416702Y Remote-control wireless headphone
01/24/2001CN2416701Y Improved all-diapason horn loud-speaker box
01/24/2001CN2416700Y Thunder ball
01/24/2001CN2416699Y Audiovisual equipment with multiple-sound channel earphone outputting socket
01/18/2001WO2001005188A1 Sound reproducing unit
01/17/2001EP1068769A1 In-home theater surround sound speaker system
01/16/2001US6175489 Onboard speaker system for portable computers which maximizes broad spatial impression
01/11/2001WO2001003471A1 Vehicle-mounted acoustic system
01/11/2001WO2000046786A3 A headphone comprising bending-wave loudspeakears
01/10/2001EP1067818A2 Video equipment speaker device with acoustic lens
01/10/2001CN2414573Y Loudspeaker casing hanging frame
01/10/2001CN1279561A Loudspeaker device with acoustic lenses for video apparatus
01/09/2001US6173061 Steering of monaural sources of sound using head related transfer functions
01/09/2001CA2134408C Anti-eavesdropping device
01/06/2001CA2313423A1 Video equipment speaker device with acoustic lens
01/03/2001CN2413460Y New speaker
01/02/2001US6169814 Fetal communication device
01/02/2001US6169812 Point source speaker system
01/02/2001US6169809 Visual display means incorporating loudspeakers
01/02/2001CA2048686C Audio signal reproducing apparatus
12/2000
12/27/2000CN2412340Y Mobile plate loudspeaker and bass combiner
12/27/2000CN2412339Y Multifunctional plate loudspeaker
12/27/2000CN2412338Y Stereo loudspeaker for PC
12/27/2000CN2412337Y Horn speaker
12/26/2000US6167140 AV Amplifier
12/21/2000WO2000078092A1 Loudspeaker
12/21/2000DE19925843A1 Method for generating transmission medium for acoustic music signal, involves using two or more signal components and time adjuster
12/20/2000EP1061774A2 Audio system having a sound field processor
12/20/2000EP1060433A1 Industrial safety assembly including disposable ear protection and ear phone
12/14/2000WO2000076272A1 Digital wireless loudspeaker system
12/14/2000WO2000076266A2 Virtual multichannel speaker system
12/14/2000WO2000076176A2 Loudspeaker volume range control
12/13/2000CN2410838Y Rotating wheeled horn
12/13/2000CN2410837Y Loudspeaker box
12/13/2000CN2410836Y Box structure of overweight low voice loudspeaker box
12/06/2000EP1058480A2 Audio system and head attachment audio unit
12/06/2000EP1057366A1 Microphone apparatus for producing signals for surround reproduction
12/06/2000EP1057365A1 Personal sound masking system
12/06/2000CN2409730Y Digital sounding television apparatus
12/06/2000CN1275875A Acoustic system and head held acoustic apparatus
11/2000
11/30/2000WO2000072629A1 An underwater audio system
11/30/2000WO2000072564A2 Echo compensation device
11/29/2000EP1056310A2 Automotive audio system
11/29/2000CN2408636Y Bionic space sound recorder
11/29/2000CN1275301A Audio signal processor and audio device
11/23/2000WO2000048427A3 Method and system of compensating for boundary effects on a primary sound source
11/22/2000EP1054576A1 Pseudo-stereophony device
11/22/2000EP0812492A4 Dual audio program system
11/22/2000CN2407543Y Personal loudspeaker box baffle
11/22/2000CN2407542Y Universal rotation miniature ground loudspeaker box baffle
11/22/2000CN2407541Y Miniature ground loudspeaker box baffle with linkage bar support
11/22/2000CN1274255A Earphone with dual earhooks
11/22/2000CN1274254A 3D-space sound system
11/21/2000US6151402 Vibration transducers
11/21/2000US6151401 Planar speaker for multimedia laptop PCs
11/21/2000US6151206 Electronic device
11/16/2000WO2000032011A3 Loudspeaker with statuary-like diaphragm
11/15/2000EP1052878A1 Device for connecting a source to an audio diffusion equipment, in particular of an automotive vehicle
11/15/2000EP1052877A2 Vehicle-carried sound reproduction apparatus
11/15/2000CN2406435Y Wireless surrounding audio-frequency processing circuit
11/15/2000CN2406434Y Microphone with automatic switch
11/15/2000CN2406433Y Microphone with automatic switch
11/15/2000CN1273192A Playback device mounted on vehicle
11/14/2000US6148089 Unidirectional microphone
11/14/2000US6148086 Method and apparatus for replacing a voice with an original lead singer's voice on a karaoke machine
11/14/2000US6148085 Audio signal output apparatus for simultaneously outputting a plurality of different audio signals contained in multiplexed audio signal via loudspeaker and headphone
11/09/2000DE19902874C1 Bath tub with a converter transforming electrical signals into mechanical vibrations comprises a mounting plate which by fixing elements is attachable to the bath tub wall, and is rigidly joined to the converter
11/08/2000CN2405388Y Multi sound track type around sound box
11/08/2000CN1272753A Receiver of TV set
11/07/2000US6144747 Head mounted surround sound system
11/07/2000US6144746 Loudspeakers comprising panel-form acoustic radiating elements
11/03/2000CA2270825A1 Extensible loudspeaker unit for a portable computer
11/02/2000WO2000065874A1 Sound reproduction employing unity summation aperture loudspeakers
11/02/2000EP0728403B1 Voice transmission adaptor assembly
11/01/2000CN2404269Y High fidelity final stage frequency power current amplifier
10/2000
10/31/2000US6141424 Headphone capable of directly converting digital audio signal into analog audio signal
10/31/2000CA2188533C Industrial headset
10/26/2000WO2000064216A1 Anti-feedback, full-duplex headset
10/26/2000WO2000038476A3 Motor vehicle audio system
10/26/2000WO2000035243A3 Noise reducing headsets
10/26/2000WO2000025549A3 Method for spatial reproduction of a stereo signal and arrangement for carrying out said method