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Class Information
Number: 381/58
Name: Electrical audio signal processing systems and devices > Monitoring/measuring of audio devices
Description: Subject matter having an indicator, measuring device, or eavesdropping means.










Sub-classes under this class:

Class Number Class Name Patents
381/59 Loudspeaker operation 382
381/60 Testing of hearing aids 330


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

Patent Number Title Of Patent Date Issued
8712067 System and method of improving audio signals for the hearing impaired Apr. 29, 2014
8712070 Simultaneous enhancement of transmission loss and absorption coefficient using activated cavities Apr. 29, 2014
8704533 Method and apparatus to measure differential phase and frequency modulation distortions for audio equipment Apr. 22, 2014
8705754 Measuring transducer displacement Apr. 22, 2014
8705773 Audio amplifier Apr. 22, 2014
8693703 Method of combining at least two audio signals and a microphone system comprising at least two microphones Apr. 8, 2014
8693700 Adaptive feed-forward noise reduction Apr. 8, 2014
8687816 Signal processing Apr. 1, 2014
8687829 Apparatus and method for multi-channel parameter transformation Apr. 1, 2014
8682002 Systems and methods for transducer calibration and tuning Mar. 25, 2014
8676363 Information processing apparatus, audio signal processing method, and program product Mar. 18, 2014
8675882 Sound signal processing device and method Mar. 18, 2014
8675885 Adjusting noise reduction in headphones Mar. 18, 2014
8670569 Method for checking audio interface in AV system and apparatus using the same Mar. 11, 2014
8666083 Intercom headset connection and disconnection responses Mar. 4, 2014
8660272 Parameter setting method and audio apparatus Feb. 25, 2014
8654995 Audio control system for a vehicle Feb. 18, 2014
8655420 Wireless earphone set Feb. 18, 2014
8655465 Method and electronic device Feb. 18, 2014
8643359 Method and apparatus to measure differential phase and frequency modulation distortions for audio equipment Feb. 4, 2014
8644518 Audio broadcast collecting method Feb. 4, 2014
8634564 Signal processing device and method, and a program Jan. 21, 2014
8634565 Audio signal processing apparatus, audio signal processing method, and program Jan. 21, 2014
8634576 Output phase modulation entrainment containment for digital filters Jan. 21, 2014
8630726 System and method for detecting three-way call circumvention attempts Jan. 14, 2014
8630427 Telecommunications terminal and method of operation of the terminal Jan. 14, 2014
8630423 System and method for testing the speaker and microphone of a communication device Jan. 14, 2014
8620000 Apparatus and method for controlling audio output, and mobile terminal system using the same Dec. 31, 2013
8620005 All-digital speaker system device Dec. 31, 2013
8611549 Detection circuit for audio device Dec. 17, 2013
8612237 Method and apparatus for determining audio spatial quality Dec. 17, 2013
8606782 Segmentation description scheme for audio-visual content Dec. 10, 2013
8605918 Power saving system and method for loudspeaker Dec. 10, 2013
8600067 Acoustic sealing analysis system Dec. 3, 2013
8588431 Electrical system for a speaker and its control Nov. 19, 2013
8577048 Self-calibrating loudspeaker system Nov. 5, 2013
8577051 Sound signal compensation apparatus and method thereof Nov. 5, 2013
8571226 Automatic polarity adaptation for ambient noise cancellation Oct. 29, 2013
8565908 Systems, methods, and apparatus for equalization preference learning Oct. 22, 2013
8565441 Method and apparatus for reducing resonance of loudspeaker Oct. 22, 2013
8565440 Processing audio input signals Oct. 22, 2013
8552887 Determining an electrical short in an aviation communication apparatus Oct. 8, 2013
8553896 Direct vocal and instrument monitor Oct. 8, 2013
8553899 Output phase modulation entrainment containment for digital filters Oct. 8, 2013
8553916 Method and hearing aid for changing the sequence of program positions Oct. 8, 2013
8548494 Localization of mobile computing devices in indoor environments Oct. 1, 2013
8542840 Apparatus and method for filtering a signal to match a loudspeaker Sep. 24, 2013
8535236 Apparatus and method for analyzing a sound signal using a physiological ear model Sep. 17, 2013
8538032 Electrical load detection apparatus Sep. 17, 2013
8532320 Method and system for fitting a hearing aid Sep. 10, 2013

1 2 3 4 5 6 7 8 9 10 11










 
 
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