There are eight analog signals, each of bandwidth W=2(kHz). Samples of these signals are time-division-multiplexed, quantized and binary-coded. The step size Δ of the quantizer cannot be greater than 0.5% of the peak amplitude mp. The sampling rates (kHz) is 50% above the Nyquist rate and the minimum number of quantization levels should be .
A: 6, 100
B: 12, 200
C: 24, 200
D: 48, 400
A: 6, 100
B: 12, 200
C: 24, 200
D: 48, 400
举一反三
- There are eight analog signals, each of bandwidth W=2(kHz). Samples of these signals are time-division-multiplexed, quantized and binary-coded. The step size Δ of the quantizer cannot be greater than 0.5% of the peak amplitude mp. The sampling rates (kHz) is 50% above the Nyquist rate and the minimum number of quantization levels should be . A: 6, 100 B: 12, 200 C: 24, 200 D: 48, 400
- 中国大学MOOC: There are eight analog signals, each of bandwidth W=2(kHz). Samples of these signals are time-division-multiplexed, quantized and binary-coded. The step size Δ of the quantizer cannot be greater than 0.5% of the peak amplitude mp. The sampling rates (kHz) is 50% above the Nyquist rate and the minimum number of quantization levels should be .
- There are eight analog signals, each of bandwidth W=2（kHz). Samples of these signals are time-division-multiplexed, quantized and binary-coded. The step size Δ of the quantizer cannot be greater than A: 6, 100 B: 12, 200 C: 24, 200 D: 48, 400
- A signal s(t)=3cos(20pt) V is quantized by a uniform quantizer, the step size of the quantizer is 0.1V, then the minimal number of quantization level is Lmin=_______, the number of bits per sample is at least Rmin=_______, and the variance of the quantization error is _________V^2.
- 声音作为一种波，频率在（ ）之间的声音是可以被人耳识别的。 A: 20 Hz~20 kHz B: 2 Hz~20Hz C: 20 kHz~200 kHz D: 200 kHz~400 kHz