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Unformatted text preview: for sweep shows energy sweeping from 0 Hz to 4000 Hz at a linear rate. The spectrogram for the noise signal shows energy evenly spread with respect to frequency and time. 2. If L =256 and N OL =240, the length of the increment (hop) in samples is L hop =16 samples. This corresponds to: T hop = 16 samples 1 F s = 2 ms . (1) The rate at which successive FFTs are calculated is determined as: F FFT = 1 T hop = L-N OL F s Hz . (2) 1. For long window lengths, the horizontal striations correspond to harmonics. 2. The vertical striations occur since short window lengths results in increased temporal resolu-tion. 3. The parameter set which can be considered best for estimating formant frequencies for the male sentence is (120,90). At these settings, harmonics are no longer resolved, and the shape of the spectral envelope is clear. 1...
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- Spring '09
- Electrical Engineering