Digital Signal Processing Reference
In-Depth Information
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(a) Norm Freq
(b) Norm Freq
(c) Norm Freq
Figure 3.64:
(a) DTFT of 1024 samples of original sequence of a 2950 Hz cosine sampled at 8000
Hz; (b) DTFT of 1024 samples of the 2950 Hz cosine after being resampled at 11025 Hz using sinc
interpolation, and lowpass filtered with a cutoff frequency of 4 kHz; (c) DTFT of 1024 samples of the
2950 Hz cosine after being resampled at 11025 Hz using linear interpolation, and lowpass filtered with
a cutoff frequency of 4 kHz.
