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Double-channel audio system based on USB and work method thereof

An audio system and working method technology, applied in transducer circuits, sensors, electrical components, etc., can solve the problems of limited space, increased noise, easy burnout of audio power amplifier chips, etc., to improve stability and reliability, The effect of increasing power redundancy and avoiding chip burnout

Active Publication Date: 2014-03-05
CHENGDU AEROSPACE COMM EQUIP CO LTD
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Problems solved by technology

The actual result is that in the structure design and electrical design of the whole machine, there are shallow problems such as large system modules, limited space, difficult installation and maintenance of sub-modules; at the same time, low system reliability, easy self-excitation and Popping sound, poor sound quality, lots of interference, cut-off distortion, increased noise, audio power amplifier chip is easy to burn out and other deep-seated problems

Method used

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  • Double-channel audio system based on USB and work method thereof
  • Double-channel audio system based on USB and work method thereof
  • Double-channel audio system based on USB and work method thereof

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0028] like figure 1 As shown, a USB-based dual-channel audio system includes a wired signal processing unit, a wireless signal processing unit, and an audio processing module respectively connected to a PC platform; and an antenna connected to th...

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Abstract

The invention provides a double-channel audio system based on a USB and a work method thereof. A signal processing unit receives and processes a small voice signal, the processed voice signal is stored in a PC platform through a CPCI bus in the mode of audio streams, and PCM data are sent to channels for following processing through a USB port by means of PC control software. By means of comprehensive use of a CPCI bus technique, a USB bus technique and an integrated circuit technique, the difficult problems that a traditional vehicle-mounted communication command system audio processing channel is small in power and difficult to customize, a submodule of the traditional vehicle-mounted communication command system audio processing channel is large in size and difficult to install and maintain, space of the traditional vehicle-mounted communication command system audio processing channel is limited and the system is low in reliability are solved.

Description

technical field [0001] The invention relates to a USB-based dual-channel audio system and its working method, in particular to a USB-based dual-channel audio system and its working method suitable for a vehicle communication command system. Background technique [0002] The audio processing channel of the traditional vehicle communication command system usually uses a separate operational amplifier or three-stage tube to preprocess the voice signal. Only the compression and amplification circuit usually requires three chips, and requires the use of bulky audio coupling transformers and many other components. The sub-module expands the system to realize the audio function. Due to the large number of sub-modules of the vehicle-mounted communication command system, the high level of intelligence and automation, the complexity of the system, and the limited space, traditional design techniques cannot meet these requirements. [0003] A solution in the existing technology is: us...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
Inventor 侯贵双段建伟周翠云王磊
Owner CHENGDU AEROSPACE COMM EQUIP CO LTD
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