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Ca(chn)ʎͨCеO(sh)ӋԸMӞVȻ@ЩQijɹ޵̎(yng)ԓ]O(sh)ӺӵĽQĶͨ^ŷͷŴϵy(tng)ʎ}

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ڸl°l(f)˂y(tng)^VõͨݲVͨVʹŷϵy(tng)ĸl푑(yng)l(f)˥pĶŷϵy(tng)ĎmȻбҪõͨVܱMϲĎKЧ׃øԓVĽֹlʷ15 kHzF(xin)ŷ늙CԄӌͨVMO(sh)Ķڈ(zh)Ԅ{(dio)rMl푑(yng)

ݲV͎VƿɌʎ500-1000Ɲ֮gԓ •{(dio)(ji)rgLӼeǴچ}ԓlʷ߀ڙCĿÎcͨVȣݲVһ헃(yu)ܱŷϵy(tng)ĸl푑(yng)@ζ̎ܰȫث@{(dio)CһɂݲVcͨVһʹãʹŷϵy(tng)@÷(wn)푑(yng)@ԓV5001000Hz(ni)چ}lʡݲVlʺ͎ra(chn)һy}̎ڙzyCȻrܸ(j)(wn)ıO(sh){(dio)CɘOҵӡͨ^пٸ~׃Q(FFT)ܛ״_CĹlʡ

ŷϵy(tng)ͨ^ݲVlʹ@һ^̣ŴĜy^̣ǰ~Mһ(sh)ʾɜyݔ̖lǘŴ·ܜyl(yng)O(sh)ݲVlʎݲVԄO(sh)ÿpӵһNֶmȻݲVcŷg(sh)ĵͨVһʹãпŷŴδ@һ¹

mȻͨVݲVSŷϵy(tng)(dng)C10~500 Hzlʮa(chn)ӕrl(f)]ÅsС˽Q@һ}̎ʹùƺӵMg(sh)

԰늙CSigma -5ŷŴơDf˷ŴĹκ͜pپп ԺͿҕԣDʾӹܿһλY(ji)rpʎĶsλõ{(dio)(ji)rgڡӡע

ʹٶȺD(zhun)̖늙CD(zhun)rRelȻ·ٶȷ̖MylʣԄӌԓϢڷŴTҲɌ˜y(sh)wքO(sh)lʡҪÑ߀ք{(dio)(sh)a͞Vrg(sh)Mһŷ

ӹܿɅλM^V(j)lʅ(sh)λMaԓܿɌ_aָMӋmrظ(j)lʅ(sh)͌㷨ʹ@һָŷŴ㷨ԄәzyĂ(sh)Ԅ{(dio)rMO(sh)ãɹ̎քO(sh)ԓܿڄY(ji)rl(f)aλõąĶǰzyMaДؓ(f)d

ͨ^ڄY(ji)rpʹSC{(dio)(ji)rgs@N̎ڏ(f)sķDŽؓ(f)ɵϵy(tng)dzБҴؓ(f)ɵTܱǴϵy(tng)һܺõķ

(jng)C@Щg(sh)N;аl(f)]á̎CF(xin)W(xu)܆}̓(yu)OEMO(sh)Ӌ

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