摘要
在世界范围内,主流的数字声音广播除了DAB和DRM外,近年来HD Radio技术在美国得到了快速发展,其他一些国家和地区也正在进行试验,做应用的准备。HD Radio技术是用在AM和FM中的IBOC(带内同频道)技术的发展与完善,尤其是应用在FM波段的FM HD Radio技术系统,可实现模拟与数字节目同播,可使模拟FM广播平滑过渡到数字广播,设备改造投资少。首先介绍了HD Radio技术的发展现状,着重阐述了发射与接收技术系统的构成与工作原理。
Besides DAB（Digital Audio Broadcasting） and DRM（Digital Radio Modiale） as worldwide mainstream broadcasting technologies for digital audio, HD Radio is developed rapidly. HD Radio is further development and improvement of IBOC （In-Band On-Channel） technology used in AM and FM radio. FM HD Radio realizes the simulcast of analog and digital programs in FM band, and facilitates the switch from analog FM broadcasting to digital, with a limited cost of facility reconstruction. The state-of-the-art technology of HD Radio is described, and then composition and mechanics of the transmission and receiving system of HD Radio are presented.
出处
《电声技术》
2008年第4期79-84,共6页
Audio Engineering
