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Topic: Spectrogram, Cepstrum and Mel-Frequency Analysis

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Speech Technology - Kishore Prahallad Technology: A Practical IntroductionTopic: Spectrogram, Cepstrum and Mel-Frequency AnalysisKishore PrahalladEmail: Mellon University&International Institute of Information Technology HyderabadSpeech Technology - Kishore Prahallad Spectrogram Cepstrum Mel-Frequency Analysis Mel-Frequency Cepstral CoefficientsSpeech Technology - Kishore Prahallad Technology - Kishore Prahallad signal represented as a sequence of spectral vectorsFFTFFTFFTSpectrumSpeech Technology - Kishore Prahallad signal represented as a sequence of spectral vectorsFFTSpectrumFFTFFTFFTFFTFFTFFTFFTF FTFFTFFTFFTFFTFFTSpeech Technology - Kishore Prahallad signal represented as a sequence of spectral Technology - Kishore Prahallad signal represented as a sequence of spectral vectorsFFTSpectrumFFTFFTFFTFFTFFTFFTFFTF FTFFTFFTFFTFFTFFTHzAmplitudeRotate it by 90 degreesSpeech Technology - Kishore Prahallad signal represented as a sequence of spectral vectorsFFTSpectrumFFTFFTFFTFFTFFTFFTFFTF FTFFTFFTFFTFFTFFTHz MAP

Hidden Markov Models implicitly model these spectrograms to perform speech recognition. Speech Technology - Kishore Prahallad (skishore@cs.cmu.edu) 15 Usefulness of Spectrogram • Time-Frequency representation of the speech signal • Spectrogram is a tool to study speech sounds (phones)

  Analysis, Spectrum, Frequency, Spectrograms, Hidden, Markov, Hidden markov, Cepstrum and mel frequency analysis

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