级联音箱FPGA实现方法

FPGA Implementation Method of Cascade Speaker

目前的音箱大都以单个音箱为主,如果会议室较大,无法达到理想的效果。级联音箱利用以太网线实现级联,连接简单,声音播放和拾音的效果较好。为了达到声音播放与拾音同步的效果,利用现场可编程逻辑门阵列(Field Programmable Gate Array,FPGA)完成时钟同步和数据传输。利用普通的晶振就可以实现多台设备纳秒级的同步精度,达到了很好的语音播放、拾音同步的效果。基于此,重点介绍级联音箱的FPGA实现方法。

At present,most speakers are single speakers.If the conference room is large,the ideal effect cannot be achieved.Cascaded speakers are cascaded by Ethernet cable,which has simple connection and good sound playback and pickup effect.In order to achieve the effect of sound playback and pickup synchronization,Field Programmable Gate Array(FPGA)is used to complete clock synchronization and data transmission.Using the ordinary crystal oscillator,the synchronization accuracy of multiple devices can be achieved at the nanosecond level,and a good effect of voice playback and pickup synchronization can be achieved.This paper focuses on the FPGA implementation method of cascaded speakers,and briefly describes the system.