Design Of Control Software To Digital Audio Processor

It becomes favorite entertainment ways in public to listen to the concert,watch movies and watch television and radio programs. In order to bring theaudience a better visual and sound effect, digital audio processor plays a moreand more important role in the process. Digital audio processor in generalconsists of two parts: the native processor and PC control software. In the processof design and development, the core of DSP chip programming has been thefocus of the work, the application of DSP design personnel need to master thebasic knowledge of professional software and hardware. In the past design whichhas big workload and high difficulty coefficient, adopting the method ofprogramming code, leads to the long development cycle. As the DSP graphicalprogramming technology appears in the field of audio processing, which makesthe product design focus in the field liberated from complex DSP programmingand significantly shortens the design cycle of product hardware, the work focusaccordingly changes to the design of PC control software.This paper which is aimed at the function of graphical programmingCS496122professional audio DSP chip as the core of audio processor, studies thedesign method of control software. The chip supports simple networkmanagement protocol (SNMP), makes use of the software development kitthird-party companies provide to realize the communication between controlsoftware and lower computer. For DSP program containing graphical module, thechip studies the corresponding control procedure compiling method andalgorithm implementation to complete the control of the machine, realize thecommunication within the local area network (LAN), improve the defect of thelimited distance between control the host with the unit which is caused by a serialport communication previous processor uses. This design has completed the design of the control program for systemlogin module, gain module, the PEQ module, the router module, meter module,test module. First of all, according to the control requirements of differentmodules, it chooses matching widget in MFC library, adopts the object-orientedmethod for the design of the interface on the Visual C++platform. algorithmembedded is the difficulties of the work in the various controls, whose data aresent to DSP through complex algorithm process, change the parameters of theDSP to complete the control functions. In the process it involves the messageresponse mechanism, Multi-threaded concurrent technologies and such problemsas the logical relationship between various controls. Finally, based on the tests foreach function module of the control software and the statistical analysis of testdata, each function module implements its due control function.