摘要
多通道音频控制器是数字音响系统必不可少的组成部分 ,它可以通过程序对输入功放的的多路音频信号进行选择 ,对音量和音调进行调节 ,并以数字方式直观显示控制结果。另外还具有话筒输入信号放大以及放大后与原音混合实现伴唱的功能。为简化所设计的数字电路 ,本系统使用大规模可编程逻辑控制器CPLD作为系统核心 ,将程序编译后下载到CPLD器件中 。
Multichannel audio controller is an important part in digital audio system,and it can, by means of program, select the audio signal of input to preample, tunes the volume and shows the adjusted result by digital model. It also can carry out kara OK function by amplifies the signal of microphone input and mixing it with music signal. In order to simplify the digital circuit, we use complex programmable logic device(CPLD) as controller's kernel, which allows use to downloads program from personal computer to CPLD to finish the design.
出处
《天津职业技术师范学院学报》
2004年第3期25-28,共4页
Journal of Tianjin Vocational Technical Teachers'college
关键词
多通道
CPLD器件
音频控制器
信号混合
multichannel
complex programmable logic device(CPLD)
audio controller
mixed signal
