interactive 3d audio(交互式3d音效)
itd(interaural time difference，两侧声音时间延迟差别)
midi: musical instrument digital interface(乐器数字接口)
nda: non-dword-aligned ，非dword排列
raw pcm: raw pulse code modulated(元脉码调制)
rma: realmedia architecture(实媒体架构)
rtsp: real time streaming protocol(实时流协议)
sacd(super audio cd，超级音乐cd)
snr(signal to noise ratio，信噪比)
