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Class Information
Number: 381/104
Name: Electrical audio signal processing systems and devices > Including amplitude or volume control
Description: Subject matter including means for adjusting or setting the signal level or for obtaining a substantially constant amplitude output signal for a range of variations of the amplitude of an input signal.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7617109 |
Method for correcting metadata affecting the playback loudness and dynamic range of audio information |
Nov. 10, 2009 |
| 7613312 |
Audio processing apparatus for implementing level corrections of audio data |
Nov. 3, 2009 |
| 7609840 |
System and method for hierarchical audio conflict control |
Oct. 27, 2009 |
| 7606376 |
Automotive audio controller with vibration sensor |
Oct. 20, 2009 |
| 7599503 |
Audio output level setting method and device |
Oct. 6, 2009 |
| 7598895 |
System and method of altering a PWM carrier power spectrum |
Oct. 6, 2009 |
| 7583809 |
Sound signal processing device and sound signal processing method |
Sep. 1, 2009 |
| 7577263 |
System for audio signal processing |
Aug. 18, 2009 |
| 7574010 |
System and method for adjusting an audio signal |
Aug. 11, 2009 |
| 7567679 |
System and method for controlling sound volume |
Jul. 28, 2009 |
| 7555132 |
Apparatus and method for adjusting sound volume for televisions and other audio systems |
Jun. 30, 2009 |
| 7551744 |
Display showing waveform of an audio signal and corresponding dynamic volume adjustments |
Jun. 23, 2009 |
| 7551745 |
Volume and compression control in movie theaters |
Jun. 23, 2009 |
| 7539317 |
Drive apparatus for volume control devices |
May. 26, 2009 |
| 7532730 |
Audio dynamics processing control system |
May. 12, 2009 |
| 7526095 |
Audio volume control for computer systems |
Apr. 28, 2009 |
| 7519443 |
Information signal reproducing apparatus |
Apr. 14, 2009 |
| 7519188 |
Electroacoustical transducing |
Apr. 14, 2009 |
| 7519442 |
Process for adjusting the sound volume of a digital sound recording |
Apr. 14, 2009 |
| 7505824 |
Audio signal processing apparatus and audio signal processing method |
Mar. 17, 2009 |
| 7502480 |
System and method for implementing a flat audio volume control model |
Mar. 10, 2009 |
| 7489790 |
Digital automatic gain control |
Feb. 10, 2009 |
| 7471797 |
Networked sound masking system with centralized sound masking generation |
Dec. 30, 2008 |
| 7469208 |
Method and apparatus for automatically normalizing a perceived volume level in a digitally encoded file |
Dec. 23, 2008 |
| 7469051 |
Method and apparatus for maintaining audio level preferences in a communication device |
Dec. 23, 2008 |
| 7467020 |
Method for gradually adjusting the volume level of a digital signal within a predefined time using a volume control circuit |
Dec. 16, 2008 |
| 7460674 |
Audio effector circuit |
Dec. 2, 2008 |
| 7457424 |
Electronic volume device and remote controller thereof |
Nov. 25, 2008 |
| 7440577 |
Methods and apparatus for automatic mixing of audio signals |
Oct. 21, 2008 |
| 7430296 |
Circuit arrangement for reducing the dynamic range of audio signals |
Sep. 30, 2008 |
| 7428310 |
Audio output adjusting device of home theater system and method thereof |
Sep. 23, 2008 |
| 7424118 |
Moving object equipped with ultra-directional speaker |
Sep. 9, 2008 |
| 7424120 |
Method and apparatus for volume control |
Sep. 9, 2008 |
| 7415119 |
Method for hierarchical audio conflict control |
Aug. 19, 2008 |
| 7409066 |
Method of adjusting filter parameters and an associated playback system |
Aug. 5, 2008 |
| 7409067 |
Method and apparatus for adjusting frequency characteristic of signal |
Aug. 5, 2008 |
| 7406178 |
Efficient digital audio automatic gain control |
Jul. 29, 2008 |
| 7403626 |
Level adjustment apparatus |
Jul. 22, 2008 |
| 7403828 |
System and method for transmitting and distributing audio or video data over a network system having multiple receivers |
Jul. 22, 2008 |
| 7394906 |
Device for automatically controlling audio volume based on vehicle speed and method for operating the same |
Jul. 1, 2008 |
| 7391871 |
Method and system for PCM audio ramp and decay function |
Jun. 24, 2008 |
| 7391875 |
Peak-limiting mixer for multiple audio tracks |
Jun. 24, 2008 |
| 7391877 |
Spatial processor for enhanced performance in multi-talker speech displays |
Jun. 24, 2008 |
| 7390960 |
Electronic signal processor |
Jun. 24, 2008 |
| 7371175 |
Method and system for enhanced audio communications in an interactive environment |
May. 13, 2008 |
| 7369906 |
Digital audio signal processing |
May. 6, 2008 |
| 7349547 |
Noise masking communications apparatus |
Mar. 25, 2008 |
| 7349548 |
Electronic apparatus and control method thereof |
Mar. 25, 2008 |
| 7343019 |
Streaming normalization |
Mar. 11, 2008 |
| 7339503 |
Adaptive asynchronous sample rate conversion |
Mar. 4, 2008 |
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