Digital audio processing

A technology of digital processor and audio processing unit, which is applied in recording signal processing, digital recording/reproduction, digital signal error detection/correction, etc., and can solve problems such as time-consuming and expensive manufacturing costs

Inactive Publication Date: 2003-08-13
GS知识产权有限责任公司
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AI Technical Summary

Problems solved by technology

As a result, such a system would be relatively expensive to component and manufacture; and in the event of a failure, figuring out which of the many components were damaged would take time and technically demanding testing

Method used

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  • Digital audio processing
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Examples

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Embodiment Construction

[0012] The audio system of Fig. 1 is intended for sound reproduction, eg as a home hi-fi system. The audio system includes an audio source device, a control device and an output device, all of which are connected through a central microprocessor 1 . A central microprocessor performs processing of signals from all audio sources including analog audio sources in the digital range and interfaces to user interface devices such as switch matrices and infrared remote controls. Using a central microprocessor in this way is quite beneficial to existing designs of audio systems as described above, as it allows a much greater level of integration. Consequently, fewer components are required, fabrication and testing are easier, and the resulting system can be reduced in size and cost. In addition, this type of system can also define system functions in software, so that a single hardware unit can be mass-produced and adapted to a specific application through the software running on it. ...

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Abstract

An audio processing unit for an integrated audio reproduction system comprising an audio data recovery device for recovering audio data from an audio data source (2,3,4), sound generation apparatus (14,15) and a user input device (7,8) for user input of audio processing control data, the audio processing unit comprising a digital processor (1) provided on an integrated circuit and connected to the data recovery device, the sound generation apparatus and the user selection device and arranged to receive input audio data from the data recovery device, process the input audio data in the digital domain in accordance with the audio processing control data to generate an audio output signal, and provide the audio output signal to the sound generation apparatus, and to control at least one electromechanical function of the audio data recovery device.

Description

technical field [0001] The invention relates to digital audio processing, eg for use in audio reproduction systems such as hi-fi systems. Background technique [0002] Hi-Fi systems can be built by the user from individually boxed components such as radio tuners, cassette player / recorders, compact disc (CD) players, amplifiers, and speakers. These components are connected together so that the audio signal can pass between them in analog form, from the source component to the amplifier to the speaker. Such systems are generally more expensive because each component requires a separate package, power supply and circuitry. [0003] In an integrated hi-fi system, usually everything except the loudspeaker is integrated into a single package. However, in this package, there is generally low integration between components at the circuit level, except for sharing a power supply. A typical integrated hi-fi system includes a number of audio source devices, such as radio tuners, cas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B31/00G11B20/00G11B20/10G11B20/18
CPCG11B20/10527G11B20/00G11B20/1809
Inventor 马丁·J·布伦南
Owner GS知识产权有限责任公司
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