CN201008182Y

CN201008182Y - Embedded audio-monitoring device

Info

Publication number: CN201008182Y
Application number: CNU2007200673505U
Authority: CN
Inventors: 惠新标; 顾樑; 吕家瑜; 陈立德; 曹毅
Original assignee: SHANGHAI FENGGE INFORMATION TECHNOLOGY Co Ltd
Current assignee: SHANGHAI WIBOX SCIENCE & TECHNOLOGY DEVELOPMENT CO., LTD.
Priority date: 2007-02-14
Filing date: 2007-02-14
Publication date: 2008-01-16
Anticipated expiration: 2017-02-14

Abstract

The utility model relates to a built-in audio frequency monitoring device, comprising an audio module which is connected with a built- in processor via a field programmable gate array. The audio module is composed of an AD transition module, a DA transition module, an AES decode module and an AES encode module. The AD transition module or the AES decode module are controlled by the field programmable gate array to gather data, and the DA transition module or the AES encode module are controlled by the field programmable gate array to display the voice data. The field programmable gate array is utilized as a high-speed data receiving port and a high-speed data sending port of the built-in processor. The AES decode module is employed for transmitting audio signals to digital audio signals corresponding to the AES standard. The AES encode module is used to transform the digital audio signals to audio signals corresponding to the AES standard. On the basis of the special transmission line of the conventional broadcast signal, the utility model combines the latest net audio techniques together to form an independent assistant-integrated system, the latest net audio techniques includes real-time signal level monitoring, systematic inner talk-back, multiple-point monitoring, warning indicating, audio indicating online measurement, alarming system or the like.

Description

A kind of embedded audio monitoring device

Technical field

The utility model relates to supervising device, particularly relates to a kind of embedded audio monitoring device.

Background technology

The equipment such as Audio Matrix, audio switch, audio process, audio distribution device, audio frequency monitor that adopt are realized intercommunication in the real-time level monitoring of signal, the system, multiple spot monitoring, the indication of reporting to the police, audio-frequency index on-line measurement, alert for reporting more in the implementation of traditional audio frequency turn-key system, equipment is various, sets up complexity.

The utility model content

Technical problem to be solved in the utility model is: provide a kind of and overcome above-mentioned deficiency, be convenient to embedded audio monitoring device that functions such as collection, analysis, broadcast are integrated.

The utility model is achieved in that it comprises audio-frequency module, and described audio-frequency module comprises AD modular converter, DA modular converter, AES decoder module and the AES coding module that links to each other with flush bonding processor by field programmable gate array respectively; Described flush bonding processor is gathered voice data by field programmable gate array control AD modular converter or AES decoder module, and control DA modular converter or AES coding module are play voice data; Described field programmable gate array is used as a high-speed data receiving interface and transmission interface of described flush bonding processor; The audio signal that described AES decoder module is used for meeting the AES standard converts digital audio and video signals to; Described AES code signal is used for converting digital audio and video signals to meet the AES standard audio signal.

Also comprise the network controller that links to each other with flush bonding processor.

Described flush bonding processor is general reduced instruction set arithmetic and control unit.

The utility model transmits at existing broadcast singal special line on the basis of (analog signal or AES signal), and employing latest network Audiotechnicas such as indication, audio-frequency index on-line measurement, generation report alarm system that intercommunication in the real-time level monitoring of signal, the system, multiple spot are monitored, reported to the police are fused into an independently auxiliary integral system.Owing to adopt the inner FPGA that has RAM, not only solved the problem of cost simultaneously, also brought room for improvement flexibly to design.Respectively to be assigned two block sizes be that the dual port RAM of 2048bytes is used as metadata cache in order to receive and to send among the FPGA.When reality is used, according to the sample rate size of voice data, a certain size data of each buffer memory, two blocks of data storage areas switch mutually, guarantee that metadata cache do not read and write mistake.

Description of drawings

Accompanying drawing is an embedded audio monitoring device structural principle schematic diagram.

Embodiment

With reference to the accompanying drawings, the embedded audio monitoring device mainly comprises embedded type CPU, field programmable gate array (FPGA), network controller and the audio-frequency module that is made of AD modular converter, DA modular converter, AES decoder module and AES coding module.When receiving data, embedded type CPU partly is provided with the mode of operation of AD modular converter or AES decoder module by the logic control of FPGA, make its reception simulation or AES audio signal and convert digital audio and video signals to and send into FPGA, enter embedded type CPU behind the metadata cache partial buffer of these data in FPGA, by embedded type CPU voice data is analyzed, handled or transmits afterwards.When sending data, embedded type CPU is partly controlled the mode of operation of DA modular converter or AES coding module by the logic control of FPGA, and digital audio-frequency data sent into DA modular converter or AES coding module via after the FPGA buffering, convert digital audio-frequency data to simulation or AES audio signal by above-mentioned two modules.Embedded type CPU also can pass through network controller, and the digital audio-frequency data that the reception transmission over networks is come is also analyzed, handled or transmit, and also digital audio-frequency data can be sent by network simultaneously.

In the time will realizing the function of Audio Matrix/switch/distributor, scale needs (input channel number+output channel number) the piece integrated circuit board and the network switch according to matrix/switch/distributor, the integrated circuit board correspondence of input audio frequency is arranged to simulation or AES pattern and the digital audio-frequency data of receiving by the clamping of network transmission board; With the integrated circuit board correspondence of output audio be arranged to simulation or AES pattern, and receive by network and to need the input card voice data of output to play.

When the function that will realize the audio frequency monitor, the integrated circuit board of input audio frequency is arranged to corresponding simulating or AES pattern, the audio frequency that receives is carried out the monitoring of indexs such as level, phase place by CPU.

In the embedded audio monitoring device, embedded type CPU has been selected the embedded microprocessor chip PXA255 of the Xscale microarchitecture of Intel Company for use.The AD modular converter adopts the CS5361 chip and the corresponding discharge circuit of Cirrus Logic company, the DA modular converter adopts the CS4391A chip and the corresponding discharge circuit of Cirrus Logic company, the AES decoder module adopts the CS8416 chip of Cirrus Logic company, and the AES coding module adopts the CS8406 chip and the corresponding discharge circuit of Cirrus Logic company.Network controller adopts the 10/100M adaptive network transmission chip of SMSC company.

Claims

1. embedded audio monitoring device, comprise audio-frequency module, it is characterized in that: described audio-frequency module comprises AD modular converter, DA modular converter, AES decoder module and the AES coding module that links to each other with flush bonding processor by field programmable gate array respectively;

Described flush bonding processor is gathered voice data by field programmable gate array control AD modular converter or AES decoder module, and control DA modular converter or AES coding module are play voice data;

Described field programmable gate array is used as a high-speed data receiving interface and transmission interface of described flush bonding processor;

The audio signal that described AES decoder module is used for meeting the AES standard converts digital audio and video signals to;

Described AES code signal is used for converting digital audio and video signals to meet the AES standard audio signal.

2. embedded audio monitoring device according to claim 1 is characterized in that: also comprise the network controller that links to each other with flush bonding processor.

3. embedded audio monitoring device according to claim 1 is characterized in that: described flush bonding processor is general reduced instruction set arithmetic and control unit.