Design And Research Of Digital Audio Mixing Console Based On STM32F107VC+CS495313

Compared to analog signals, the digital signal transmission has stronger anti-interference capability and lower distortion, the rapid development of digital technology and computer multimedia technology, it is useful for television stations, and radio stations broadcast to make a transition from analog mixing console to digital mixing console, R&D and production of high-performance digital mixing consoles has been paid more and more attention.In view of this kind of demand, this paper has proposed embedded digital mixing console system which based on CS495313 and STM32F107VC,embedded systems technology will be applied to digital mixer, mixer achieve a variety of signals to be processed by digital, so that the functions of the mixer becomes more powerful, the interface is also more friendly and more easily controlled, while mixer meet a variety of individual needs, is an innovative, intelligent products.This article describes the development of digital mixing consoles and domestic and international situation; proposes new development of digital mixing console system to achieve the overall program and its functions. Thesis according to the functions of the mixer the whole system is divided into audio processing module, master control module, the most elaborate and the design of the two modules are discussed in detail.In the main control module, discussing the hardware circuit design of peripheral device interface, such as CAN,USB-OTG,Ethernet and so on, detailing operation principle of the circuit; according to the functions of the master module, the author successfully receive to download the DSP program and migrate FATFS file system.In the audio processing module, the depth of the audio input circuits, A/D converter circuit, D/A converter circuit, output circuit and SPDIF audio signal decoding circuit design; audio processing modules according to functional requirements, analyzes CS495313 Graphics software design and CS5368,CS4382,CS8416 chip configuration registers.This paper summarizes and prospects the design of the system, proposes the ways to further improve.