ΪɫⰲװļеݼMP3ʽļʱֻҪ  ŵ乤  ɡ


ڣŵĸߵƵ̬ůּǺŴ״̬ʹࡢͨ͸ȡϸںͶ̬еȶмѱ֡


棺ʹʱСģʹòпܵ𻵣ʹЩǰȷť͵Ϊ㣬ɲţǿ䲻ܳܵ˾κ켰γе


Ϊðȫ棬ṩźԴ

1ź20HZ-20000HZƵʷΧڣ㶨õƵף˥ؿ·ʱ+/- 1 dBڣչGB7313-87,ͨá

2ۺۺӵƵƵ˥Ϊ1/fͨΪÿ8½3ֱҲ20HZ-20000HZƵʷΧڣȱȴõƵף˥ؿ·ʱ+/- 1.5 dBڡչGB7313-87

3ҲźţΪһһźţϵָгźţ估ȵɨƵá

4źţרҵźԴ𵽰ЧʺߵľӼһûô֡

עѡðͷۺΪʹϵͳƵ׸ӽʵֲֵͬʱҲܵƵĳ𻵣ѡģĿźŴͨ˲޷A,ڰB,ں޷ܽۺźŵķֵ1.8-2.2֮估3-4֣֮׼Чڹʱ׼IEC268-1C(1982)ģĿźšGB6278-86 ,GB7313-87