Transcription of 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 vectorsFFTFFTFFTS pectrumSpeech Technology - Kishore Prahallad signal represented as a sequence of spectral vectorsFFTS pectrumFFTFFTFFTFFTFFTFFTFFTFFTFFTFFTFFT FFTFFTS peech Technology - Kishore Prahallad signal represented as a sequence of spectral Technology - Kishore Prahallad signal represented as a sequence of spectral vectorsFFTS pectrumFFTFFTFFTFFTFFTFFTFFTFFTFFTFFTFFT FFTFFTHzAmplitudeRotate it by 90 degreesSpeech Technology - Kishore Prahallad signal represented as a sequence of spectral vectorsFFTS pectrumFFTFFTFFTFFTFFTFFTFFTFFTFFTFFTFFT FFTFFTHz MAP spectral amplitude to a grey level (0-255) value.
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) • Phones and their properties are visually studied by phoneticians • Hidden Markov Models implicitly model spectrograms for speech to text ...
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