Bram Jacobse

Tinkering CD Players & Digital Audio

Measuring SAA7220 / TDA1541 O.S. vs N.O.S.

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Source Digital in 16 bits undithered frequentie. sweep 20Hz to 20kHz , AES 17 filter,

output level in No OverSampling is 1 dB more, and has a rolloff -3dB at 20 kHz

Level NOS and OS are  both 0 dBfs is 0 dBref – Source Digital in 16 bits undithered frequentie. sweep 20Hz to 20kHz , AES 17 filter

Level NOS and OS are  both 0 dBfs is 0 dBref – Source Digital in 16 bits undithered frequentie. sweep 20Hz to 20kHz , AES 17 filter

White noise , 16 bits undithered , sample at 192kHz , FFT 1m 10x average