AUTOMATIC VOLUME AND DYNAMIC RANGE ADJUSTMENT FOR MOBILE AUDIO DEVICES
PROBLEM TO BE SOLVED: To provide a method and apparatus for noise cancellation and automatic volume control for a mobile audio device.SOLUTION: A mobile audio device performs audio dynamic range control (ADRC) 125 and automatic volume control (AVC) 126 to increase the volume of sound 127 emitted fro...
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| creator | XIANG PEI SAMIR KUMAR GUPTA WANG SONG EDDIE L T CHOY PRAJAKT V KULKARNI |
| description | PROBLEM TO BE SOLVED: To provide a method and apparatus for noise cancellation and automatic volume control for a mobile audio device.SOLUTION: A mobile audio device performs audio dynamic range control (ADRC) 125 and automatic volume control (AVC) 126 to increase the volume of sound 127 emitted from a speaker of the mobile audio device so that faint passages of the audio can be more audible. This amplification of faint passages occurs without overly amplifying other louder passages, and without substantial distortion due to clipping. Multi-microphone active noise cancellation (MMANC) 133 functionality is used to remove background noise from audio information picked up on microphones of the mobile audio device. |
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| subjects | ACOUSTICS BASIC ELECTRONIC CIRCUITRY CONTROL OF AMPLIFICATION DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS MUSICAL INSTRUMENTS PHYSICS PUBLIC ADDRESS SYSTEMS SPEECH ANALYSIS OR SYNTHESIS SPEECH OR AUDIO CODING OR DECODING SPEECH OR VOICE PROCESSING SPEECH RECOGNITION |
| title | AUTOMATIC VOLUME AND DYNAMIC RANGE ADJUSTMENT FOR MOBILE AUDIO DEVICES |
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