远场-近场折中的波束形成器设计及SOPC实现  

Design of Mixed Near-Filed and Far-Filed Beamformer and Its Application on SOPC

作　　者：周尧[1] 高天德[1] 郭秀焱[1] 王向辉[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《现代电子技术》2010年第15期107-110,共4页Modern Electronics Technique

摘　　要：针对语音信号处理中传统的固定波束形成器,需要给定远场声源或近场声源,导致应用场合受到局限的问题,提出了用最小平方方法实现远场-近场折中的固定波束形成器设计,给出了系统在SOPC上的实现过程,验证了该方案具有运算简单,应用广泛而且失真度小的特性。Since the near-filed or far-filed sound source has to be configured before the conventional fixed beamformer performs the speech signal processing,a least squares method is proposed to implement the design of a fixed beamformer with the near-filed and far-filed compromise.The implementation procedure of the system on SOPC is presented.It proves that the approach has the characteristics of simple arithmetic operation and less speech distortion.

关 键 词：麦克风阵列 语音增强 波束形成 SOPC FPGA 

分 类 号：TN011[电子电信—物理电子学]