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Class Information
Number: 381/107
Name: Electrical audio signal processing systems and devices > Including amplitude or volume control > Automatic
Description: Subject matter having means to control the signal level adjusting means automatically as a function of some characteristic of an input signal.










Sub-classes under this class:

Class Number Class Name Patents
381/108 Including feedback 164


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14

Patent Number Title Of Patent Date Issued
8705766 Information processing apparatus, information processing system, and method of controlling information processing apparatus Apr. 22, 2014
8705768 Mixing apparatus and computer program therefor Apr. 22, 2014
8705773 Audio amplifier Apr. 22, 2014
8687823 Microphone interface and method of operation Apr. 1, 2014
8687824 Acoustic processing device Apr. 1, 2014
8681998 Volume correction device, volume correction method, volume correction program, and electronic equipment Mar. 25, 2014
8675894 Audio console system Mar. 18, 2014
8666106 Sound reproducing device Mar. 4, 2014
8665369 Signal processing apparatus for applying AVC to delayed signals and a method thereof Mar. 4, 2014
8645144 Audio signal shaping for playback by audio devices Feb. 4, 2014
8626322 Multimedia display based on audio and visual complexity Jan. 7, 2014
8620000 Apparatus and method for controlling audio output, and mobile terminal system using the same Dec. 31, 2013
8615316 Method and an apparatus for processing an audio signal Dec. 24, 2013
8615094 Automatic level control circuit Dec. 24, 2013
8615095 Automatic volume control for audio signals Dec. 24, 2013
8611558 System and method for dynamic range extension using interleaved gains Dec. 17, 2013
8611548 Noise analysis and extraction systems and methods Dec. 17, 2013
8606381 Method and device for switching audio recording modes Dec. 10, 2013
8600077 Audio level control Dec. 3, 2013
8600078 Audio signal amplitude adjusting device and method Dec. 3, 2013
8593573 System, method and apparatus for detecting docking of headphones Nov. 26, 2013
8594344 Method and apparatus for layered audio Nov. 26, 2013
8594345 Automatic correction of loudness level in audio signals Nov. 26, 2013
8588949 Method and apparatus for adjusting volume levels in a multi-zone system Nov. 19, 2013
8588430 Controlling an adaptation of a behavior of an audio device to a current acoustic environmental condition Nov. 19, 2013
8588429 Sound device and sound control device Nov. 19, 2013
8582786 Automatic gain control of amplifier by dynamic suppressing and output control at multiple stages Nov. 12, 2013
8576046 Playback control apparatus and audio system Nov. 5, 2013
8577058 Display device and driving method thereof Nov. 5, 2013
8577059 Audio system including multiband audio dynamics processor Nov. 5, 2013
8571236 Volume control system, controller, and amplifying apparatus Oct. 29, 2013
8571235 Method and device for providing a plurality of audio files with consistent loudness levels but different audio characteristics Oct. 29, 2013
8571234 Display device and driving method thereof Oct. 29, 2013
8571233 Signal characteristic adjustment apparatus and signal characteristic adjustment method Oct. 29, 2013
8571226 Automatic polarity adaptation for ambient noise cancellation Oct. 29, 2013
8559654 Range finding audio system Oct. 15, 2013
8559656 System and method for automatic microphone volume setting Oct. 15, 2013
8553504 Crossfading of audio signals Oct. 8, 2013
8553908 Amplification apparatus Oct. 8, 2013
8554347 Remote audio amplifier monitoring system Oct. 8, 2013
8548173 Sound volume correcting device, sound volume correcting method, sound volume correcting program, and electronic apparatus Oct. 1, 2013
8548614 Dynamic range control and equalization of digital audio using warped processing Oct. 1, 2013
8542849 Apparatus, method, and manufacture for connectable gain-sharing automixers Sep. 24, 2013
8538042 System for increasing perceived loudness of speakers Sep. 17, 2013
8538043 Apparatus for processing an audio signal and method thereof Sep. 17, 2013
8532313 Audio processing system for an audio output device Sep. 10, 2013
8532314 Audio volume control circuit and method thereof Sep. 10, 2013
8526638 Gain control circuit and electronic volume circuit Sep. 3, 2013
8526637 Volume control apparatus and program of volume control apparatus Sep. 3, 2013
8520872 Apparatus and method for sound processing in a virtual reality system Aug. 27, 2013

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