KS C IEC 60386-2013 Method of measurement of speed fluctuations in sound recording and reproducing equipment《录音和重放设备速度波动的测量方法》.pdf

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2、.1 1(2 )( ) .2 4.2 2( ).2 4.3 2 A( ) 6 B( ) 7 KS C IEC 60386:2013 ii 1972 1 IEC 60386, Method of measurement of speed fluctuations in sound recording and reproducing equipment Amendment 1(1988) . KS C IEC 60386:2013 Method of measurement of speed fluctuations in sound recording and reproducing equip

3、ment 1 . 2 . 2.1 (flutter) , 10 Hz . 2.2 (wow) , 0.1 Hz 10 Hz . 2.3 (drift) 3 3.1 . 3.2 3 150 Hz . 3.3 , . 3.4 3.3 3 150 Hz , . . 3.5 , . KS C IEC 60386:2013 2 4 1 1 . 0.1 Hz 200 Hz . 4.1 1(2 )( ) 5 . v . , 5 % v0 . ( 3 ). v0 . , 2 , 2 . 4.2 2( ) 4.2.1 1 Hz 1 ( A) , (2 fsin max) 4 Hz B % ( 2 ). fpul

4、se 2 fsin max 1 Hz, 100 ms , 36 % 44 % . . 4.2.2 . . (%)1005.0 . . 4.3 KS C IEC 60386:2013 3 1 2 . 1 . 1 . 1 Hz dB 0.1 0.2 48.0 30.6 0.1 Hz 0.2 Hz 10 dB 4 dB 0.315 0.4 19.7 15.0 0.315 Hz 0.5 Hz 4 dB 0.63 0.8 1 1.6 2 8.4 6.0 4.2 1.8 0.9 0.5 Hz 4 Hz 2 dB 4 0 4 Hz 0 dB 6.3 10 20 40 0.9 2.1 5.9 10.4 4 H

5、z 50 Hz 2 dB 63 100 200 14.2 17.3 23.0 50 Hz 200 Hz 4 dB KS C IEC 60386:2013 4 1 A(ms) 10 30 60 100 B(%) 213 626 906 1004 2 (Hz) (dB) 1s A f sin max (f ) KS C IEC 60386:2013 5 1005i= Tt 3 2 (%) t1t3t4 v0 v0 (s) t2T(5s) KS C IEC 60386:2013 6 A ( ) A.1 5 % . A.1.1 , 0.8 Hz 20 Hz (linear) . . A.1.2 10

6、% . , 15 % . A.1.2.1 6 dB A.1.2.2 0.15 % 4 Hz 30 % A.1.2.3 180 Hz ( , ： hum) 20 %( ) A.1.2.4 10 % A.1.2.5 15 35 ( 15 , ) A.1.2.6 4 A/m 60 Hz A.1.3 100 mV . . A.1.4 3 150 Hz 300 k . A.1.5 ( , ) . 1 V . KS C IEC 60386:2013 7 B ( ) , . ( ) , ( ). f v/f v . (v ) , . , , . . B.1 ( ) . , 2 , 2 . . , . . 1

7、00 Hz . . 200 Hz . , ( , .) , . . (rms) . , . B.2 ( ) ( , ) , , . , . , . , , . , KS C IEC 60386:2013 8 , 30 . 30 , . , . “ ” . . . , . , . . , , . . B.3 , , 3 150 Hz . . , . . , , . 153787 1 145 3(16) (02)26240114 (02)26240148 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS C IEC 60386:2013 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Method of measurement of speed fluctuations in sound recording and reproducing equipment ICS 33.160.30