List of Figures
Figure 2.1 | A synthetic audio signal. | 12 |
Figure 2.2 | A STEREO audio signal. | 14 |
Figure 2.3 | Short-term processing of an audio signal. | 26 |
Figure 3.1 | Plots of the magnitude of the spectrum of a signal consisting of three frequencies at 200, 500, and 1200 Hz. | 38 |
Figure 3.2 | A synthetic signal consisting of three frequencies is corrupted by additive noise. | 40 |
Figure 3.3 | The spectrogram of a speech signal. | 41 |
Figure 3.4 | Spectrograms of a synthetic, frequency-modulated signal for three short-term frame lengths. | 42 |
Figure 3.5 | Spectrum representations of (a) an analog signal, (b) a sampled version when the sampling frequency exceeds the Nyquist rate, and (c) a sampled version with insufficient sampling frequency. In the last case, the shifted versions ... |
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