准分离或伴音系统和BTSC电视多路伴音接收机设计与实践

Design and Practice of Quasi-Split SIF System and TV Receiver for BTSC Multichannel Sound

电视拦收机为获得高质量的立体声和双伴音,必须设法降低系统动态噪声和内载波蜂音。本文在分析了现行电视机中产生内载波蜂音的原因之后,介绍了准分离式伴音系统原理和应用单片Zenith-dbx解码集成电路设计的BTSC制式电视多路伴音接收机。

High quality stereo and dual sound for a TV receiver require improvements in the dynamienoise performance and the intercarrier buzz. This paper analyses the intercarrier buzz phenomenon in TVreceiver and describes a Quasi-Split SIF system and the design of TV receiver for BTSC multichannel soundwith single-chip Zenith-dbx decoder.