Speech_Recognition_HW1

Speech_Recognition_HW1 - - Ajay Iyer Outline What is a...

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- Ajay Iyer
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Outline What is a Spectrogram? Types of Spectrogram Linguistic and Acoustic Category Prosodic Analysis Pitch Estimation
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What is a Spectrogram? A Spectrogram is a visual representation of an acoustic signal. It displays the degrees of amplitude, frequency and temporal content of the signal. Depending on the size of the Fourier analysis window, different resolutions in frequency/time are achieved. A long analysis window, resolves frequency at the expense of time thereby giving a “Narrowband spectr0gram”. A short analysis window on the other hand, resolves time at the expense of frequency – hence called a “Wideband spectrogram”.
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Types of Spectrograms Narrowband Spectrogram Wideband Spectrogram
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Spectrograms
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Linguistic/ Acoustic Categories Labeling of the Linguistic and/or Acoustic categories aids in speeding up the search and decoding algorithms, by discarding the impossible and highly unlikely phoneme combinations. Implementation : The given phoneme is compared to the
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This note was uploaded on 02/11/2012 for the course ECE 5526 taught by Professor Staff during the Summer '09 term at FIT.

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Speech_Recognition_HW1 - - Ajay Iyer Outline What is a...

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