Integrated multimedia signal processing system using centralized processing of signals

• US 20060161282A1
• Filed: 03/21/2006
• Published: 07/20/2006
• Est. Priority Date: 12/30/2004
• Status: Active Grant

• Current Assignee: Chul Chung
• Original Assignee: Chul Chung
• Inventors: Chung, Chul
• Granted Patent: US 7,561,935 B2
• Time in Patent Office: Days
• US Class Current: 700/94
• CPC Class Codes: H04S 7/307 Frequency adjustment, e.g. tone control H04S7/301 takes precedence

Abstract

Integrated processing of multimedia signals can eliminate unnecessary signal processors and converters without losing the functionality of typical home entertainment system components. The integrated multimedia system includes a main player that captures and processes signals digitally. The main player may adjust the audio signal to provide audio output of equal loudness across all frequencies by accounting for sensitivity of the human ear for sounds of varying frequencies. The main player can also account for perceived differences in loudness based on the angle of a listener to a speaker by detecting the position of a user and making an adjustment accordingly. The invention further provides a speaker that has embedded performance characteristics or an identifier that allows the system to provide an optimal speaker driving current for a particular system or determine how that speaker would be best implemented in the integrated system.

Claims

1. An integrated audio processing system, comprising:

an audio source;

a central processing unit adapted to be responsive to an audio signal from the audio source;

a digital volume control module adjusting the audio signal;

an image capture device providing listener position information to the digital volume control module; and

a plurality of speakers outputting audio based on the processed audio signal,

wherein digital volume control module adjusts the audio signal in response to the listener position information.

2. The integrated audio processing system of claim 1, wherein the listener position information is an angle between a listener and a speaker of the plurality of speakers.

3. The integrated audio processing system of claim 1, wherein the listener position information is a distance between a listener and a speaker of the plurality of speakers.

4. A method for controlling audio signals, comprising:

receiving audio signals;

acquiring information on sound reception;

separating the audio signals into a plurality of frequency ranges;

checking reference data for each of the frequency ranges;

adjusting the audio signal in each frequency range of the plurality of frequency ranges based on the reference data and the information on sound reception; and

synthesizing the adjusted audio signal in each frequency range of the plurality of frequency ranges for further processing to generate audio output.

5. The method of claim 4, wherein the information on sound reception is a position of a sound receptor in relation to a sound source.

6. The method of claim 5, wherein the reference data corresponds to the sound source'"'"'s reproduction characteristics based on the position of the sound receptor in relation to the sound source.

7. The method of claim 6, wherein the reference data corresponds to a sound pressure level for each of the frequency ranges.

8. The method of claim 7, wherein the sound pressure level corresponds to an angle between the sound receptor and the sound source.

9. The method of claim 7, wherein the sound pressure level corresponds to a distance between the sound receptor and the sound source.

10. The method of claim 6, wherein the sound receptor is human being.

11. The method of claim 6, wherein the sound source is a speaker unit.