Spectrogram of the speech file mtlb
1
0.8
0.6
0.4
0.2
0
0
Frequency
500 1000 1500
Time
Specgram of sinusoid + noise
1
0.8
0.6
0.4
0.2
0
Frequency
0 500 1000 1500
Time
Power spec. den. of mtlb
Frequency
Power spec. den. of sinus. + noise
20
− 20
− 40
− 60
0
Power spectrum magnitude (dB) (^0) 0.5 1
30
20
10
0
(^0) 0.5 1
− 10
Frequency
Power spectrum magnitude (dB)
COLOR FIGURE 4.21
Plots of parts 5, 6, 7, and 8 of R.4.125.
0.8
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
−0.8
(^0) 0.5 1 1.5 (^2) 2.5 3 3.5 4
time (sec)
fundamental frequency
harmonic frequencies
Amplitude
Harmonic components of the square wave
COLOR FIGURE 4.29
Plots of part b of Example 4.1.
CRC_47760_COLPLA.indd 4CRC_47760_COLPLA.indd 4 7/18/2008 5:34:23 PM7/18/2008 5:34:23 PM