Page 696 - Digital Signal and Image Processing Using MATLAB
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Reference (SE = sampled signal, no quantization)
(PROG1) (PROG3)
Filtering
Q6
46.8 dB SE1Q8 4 F SE4Q8 and
8 bit quantization shaping h
at Fs Oversampling Q6
h
SE4Q6MF 44.3 dB
(PROG2) 6 bit quantization
SE4Q6 40.3 dB at 4 Fs
Quantization with noise
Quantization on 6 bits at 4 Fs shaping
on 6 bits at Fs without noise
34.3 dB SE1Q6 shaping
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x e1 (n) y(n) + u(n) z(n)
Interpolation Q
8 bits 8 bits – 6 bits
44,100 Hz 176,400 Hz – + 176,400 Hz
z –1
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