Dynamic Element Matching modificaties

De Bron CDD882 met TDA1541A s1 SAA7220p/b

Meten met 192 kHz Sampling, bandpass 96 khz ,  FFT 1M , avarages 8* power

Orginele TDA1541a S1 DEM clock met 860 pf, DEM-FREQ = 144 khz

DEM-mod Clock met 680pF + 6k81 DEM-FREQ = 215 kHZ

Grundig DEM , DEM-FREQ sync aan Wordclock 176.4 kHZ

Meten met 192 kHz Sampling, bandpass 96 khz ,  FFT 1M , avarages 8* power

1 Khz 0 dBFS 20 Hz – 20000 Hz

1 Khz 0 dBFS 20 Hz – 96000 Hz

1 Khz -20 dBFS 20 Hz – 20000 Hz

1 Khz -20 dBFS 20 Hz – 96000 Hz

1 Khz -60 dBFS 20 Hz – 20000 Hz

1 Khz -20 dBFS 20 Hz – 96000 Hz

Multitone  -20 dBFS 20 Hz – 20000 Hz

 

Multitone  -20 dBFS 20 Hz – 96000 Hz

Silence Dithered 20 – 20000 kHz

Silence Dithered 20 – 96000 kHz

 

Silence un-Dithered 20 – 20000 kHz

Silence un-Dithered 20 – 96000 kHz

Orgineel 680 PF 1 Khz Bandpass 22 Khz ongewogen

6K81 mod 1 Khz Bandpass 22 Khz ongewogen

Grundig Mod 1 Khz Bandpass 22 Khz ongewogen

 

Nog wat undithered toontjes gevonden op CBS test CD

Meten met 192 kHz Sampling, bandpass 96 khz ,  FFT 1M , avarages 16* power

Orgineel vs Grundig Dem 1 kHz 0 dBFS 20 – 20000 Hz

Orgineel vs Grundig Dem 1 kHz 0 dBFS 20 – 96000 Hz

Orgineel vs Grundig Dem 1 kHz -60 dBFS 20 – 20000 Hz

Orgineel vs Grundig Dem 1 kHz -60 dBFS 20 – 20000 Hz

Monotonicity  102.5 Hz 10LSB

 

 

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