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Liner Predictive Pitch Synchronization

Liner Predictive Pitch Synchronization - Liner Predictive...

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Liner Predictive Pitch Synchronization Voiced speech detection, analysis and synthesis Jim Bryan Florida Institute of Technology ECE5525 Final Project December 7, 2010
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Pitch synchronous windowing is a critical part of many speech processing algorithms Homomorphic filtering, for example, is based on the principle that the pitch frequency may be “liftered” from the vocal tract response via simple subtraction Linear prediction based signal reconstruction simpler with Pitch synchronous windowing
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Window selection for overlap and add reconstruction Bartlett, simple triangle Hann raised cosine types Hamming raised cosine types
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Bartlett window overlap and add response 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Time in Seconds Amplitude
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Hann overlap and add response 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Time in Seconds Amplitude
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Hamming window overlap and add response 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 0 0.2 0.4 0.6 0.8 1 1.2 1.4 X: 0.0361 Y: 1.073 Time in Seconds Amplitude X: 0.0202 Y: 1.079
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Blackman-Harris overlap and add response 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 0 0.2 0.4 0.6 0.8 1 1.2 1.4 Time in Seconds Amplitude
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Window selection based on “spectral leakage” and
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