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Volume leveler controller and control method

A control method and leveler technology, applied in pitch control, gain control, amplification control, etc., can solve the problem of parameter or algorithm setting discrete, unable to adjust parameters in a continuous way, etc.

Active Publication Date: 2014-10-01
DOLBY LAB LICENSING CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Furthermore, even in some automated solutions, the parameter or algorithm settings in presets are usually discrete (e.g., turning on or off a specific algorithm for a specific content), which cannot be adjusted in a continuous manner based on the content parameter

Method used

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  • Volume leveler controller and control method
  • Volume leveler controller and control method

Examples

Experimental program
Comparison scheme
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Embodiment approach

[0633] EE.1. A volume leveler controller comprising:

[0634] an audio content classifier for identifying the content type of the audio signal in real time; and

[0635] an adjustment unit for adjusting the volume leveler in a continuous manner based on the identified content type;

[0636] Wherein, the adjusting unit is configured to positively correlate the dynamic gain of the volume leveler with the informational content type of the audio signal, and make the dynamic gain of the volume leveler interfere with the audio signal Sexual content type is negatively correlated.

[0637] EE.2. The volume leveler controller according to EE 1, wherein said content type of said audio signal comprises one of speech, short-term music, noise and background sound.

[0638] EE.3. The volume leveler controller according to EE 1, wherein noise is considered as an intrusive content type.

[0639] EE.4. The volume leveler controller according to EE 1, wherein the adjustment unit is configure...

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PUM

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Abstract

The invention discloses a volume leveler controller and a control method. In one embodiment, the volume leveler controller comprises an audio content classifier for identifying the content type of an audio signal in real time; and an adjusting unit for adjusting a volume leveler in a continuous manner based on the content type as identified. The adjusting unit is configured to positively correlate the dynamic gain of the volume leveler with informative content types of the audio signal, and negatively correlate the dynamic gain of the volume leveler with interfering content types of the audio signal.

Description

technical field [0001] This application relates generally to audio signal processing. In particular, embodiments of the present application relate to devices and methods for audio classification and audio processing, and more particularly to controls for dialogue enhancers, surround virtualizers, volume levelers, and equalizers. Background technique [0002] In order to improve the overall quality of the audio and correspondingly improve the user experience, some audio improvement devices are used to modify the audio signal in the time domain or in the spectral domain. Various audio improving devices have been developed for various purposes. Some common examples of audio improvement devices include: [0003] Dialogue Enhancer: In movies and radio or TV shows, dialogue is the most important ingredient for understanding the story. To improve its intelligibility and its intelligibility, especially for elderly people with hearing loss, methods for enhancing dialogue were deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/20H04S7/00
CPCH03G3/3089H03G7/007G10L25/51G10L25/81H03G3/32H03G5/165H03G7/002G10L21/0364G10L25/30H04M7/006H04M2203/305
Inventor 王珺芦烈阿兰·西费尔特
Owner DOLBY LAB LICENSING CORP
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