A New Sound Alloy for High Grade Wind Instruments

A new sound alloy, abbreviated to S, has been developed by the General Research Institutefor Non-ferrous Metals, Beijing. The alloy is very suitable for making trumpets, trombones, tenorhorns, saxaphones and other kinds of wind instruments. Beijing Wind Instrument Factory, which is the largest one in China, has used Salloy formanufacturing 5200 type trompets, the sound performance of which has been examined with fre-quency analysis and experimented by famous musical experts. The results show that the 5200 typetrumpets made of Salloy have excellent quality, accurate intonation and ease of response at

A New World of Sound

DVD革命的一大突破在于具有杜比数字环绕音响效果。相对于此前的双声道效果,其五声道环绕配置使得听觉效果更为逼真。然而因为要布置五个扬声器和一个低音炮,环绕立体声音响系统的室内安置也很让人挠头。此外,还要考虑声音对别人影响的问题。由于上述原因,几年前推出的杜比环绕无线耳机现在越来越受到人们的青睐,因为它能让你在不影响别人的情况下,身临其境一般欣赏电影、电视和音乐。