Fully digitized audio system

• US 20040225388A1
• Filed: 07/17/2002
• Published: 11/11/2004
• Est. Priority Date: 07/17/2001
• Status: Abandoned Application

• Current Assignee: Gouhua Zhang
• Original Assignee: Gouhua Zhang
• Inventors: Zhang, Guohua, Lai, Limin, Zhan, Enyi, Zhou, Aihua
• Application Number:
  US10/197,057
• Publication Number:
  US 20040225388A1
• Time in Patent Office: Days
• US Class Current: 700/94
• CPC Class Codes: H04R 3/04 for correcting frequency response
• CPC Class Codes: H04R 3/14 Cross-over networks
• CPC Class Codes: H04S 1/007 in which the audio signals are in digital form data reduction aspects thereof based on psychoacoustics G10L19/02
• CPC Class Codes: H04S 3/008 in which the audio signals are in digital form, i.e. employing more than two discrete digital channels data reduction aspects thereof based on psychoacoustics G10L19/02

Abstract

The invention relates to a fully digitized audio system comprising a power supply and a decode and sound field effect process unit, characterized in that a digital audio signal output from the decode and sound field effect process unit is transmitted to a control and encode unit where audio and control signals are encoded, and coupled to a digital sound box through a digital transmission terminal in the control and encode unit. The invention adopts totally digitized audio signal processing according to the concept of mechatronics, solving the problem of distortions rising throughout the procedure from input, process, distribution, transmission and amplification to sounding, to ensure a controllable hi-fi output of audio signal. The audio system according to the present invention provides high fidelity, good controllability, and easiness of assembling, and is suitable for mass production of advance audio systems.

Claims

1. A digital audio system comprising a power supply and a decode and sound field effect process unit, wherein digital audio signals output from the decode and sound field effect process unit are transmitted to a control and encode unit where audio and control signals are encoded and coupled with a digital sound box unit via a digital transmission terminal in the control and encode unit.

2. A system according to claim 1, wherein control and encode unit comprises a digital audio signal channel divider, a volume and function controller, a digital audio code and control code encoder and a digital transmission terminal, whereby after the digital audio signals from the decode and sound field effect process unit are processed by the digital audio signal channel divider, the control signal of the volume and function controller and other corresponding control signals are encoded into a digital audio signal by the digital audio code and control code encoder, to form a standard encoded audio digital signal stream containing control information, which is output from digital transmission terminal.

3. A system according to claim 1, wherein the digital sound box unit comprises a digital sound box unit terminal, a digital sound box unit signal processor, a power amplifier, a speaker unit and a sound box, whereby the standard encoded audio digital signal stream output from the digital transmission terminal are fed to the digital sound box unit terminal, subjected to digital division, digital phase-frequency correction, digital amplitude-frequency correction, digital volume control and digital peak value correction through the digital sound box unit signal processor, and then divided into two or more channels of digital audio signals to be fed into amplifier (15) to drive the speaker unit (16).

4. A system according to claim 3, wherein, a condition signal related to the digital sound box unit is fed back to the control and encode unit (18) from the digital sound box unit (19) via the digital sound box unit terminal (13) and the digital transmission terminal (11).

5. A system according to claim 1, wherein the signal processor, the speaker unit and the sound box of the digital sound box unit take a mechatronic configuration.

6. A system according to claim 2, wherein the signal processor, the speaker unit and the sound box of the digital sound box unit take a mechatronic configuration.

7. A system according to claim 1, wherein the decode and sound field effect process unit comprises a digital audio source, a digital audio source input interface, an analog audio signal source, an analog audio source input interface, an AID converter, a gate circuit and an effect processor which outputs two or more channels of digital audio signals to the control and encode unit.

8. A system according to claim 2, wherein the decode and sound field effect process unit comprises a digital audio source, a digital audio source input interface, an analog audio signal source, an analog audio source input interface, an AID converter, a gate circuit and an effect processor which outputs two or more channels of digital audio signals to the control and encode unit.

9. A system according to claim 7, wherein the volume and function controller controls the gate circuit and the effect processor.

10. A system according to claim 8, wherein the volume and function controller controls the gate circuit and the effect processor.

11. A system according to claim 1, wherein the parameters of cut-off frequency, amplitude-frequency correction, phase-frequency correction and peak value correction of the digital sound box unit signal processor in the digital sound box unit can be adjusted by a speaker parameter adjuster.

12. A system according to claim 4, wherein the parameters of cut-off frequency, amplitude-frequency correction, phase-frequency correction and peak value correction of the digital sound box unit signal processor in the digital sound box unit can be adjusted by a speaker parameter adjuster.

13. A system according to claim 5, wherein the parameters of cut-off frequency, amplitude-frequency correction, phase-frequency correction and peak value correction of the digital sound box unit signal processor in the digital sound box unit can be adjusted by a speaker parameter adjuster.

14. A system according to claim 6, wherein the parameters of cut-off frequency, amplitude-frequency correction, phase-frequency correction and peak value correction of the digital sound box unit signal processor in the digital sound box unit can be adjusted by a speaker parameter adjuster.