Spectrographic Analysis of Speech

Part 1:

  • Step1: Choose an example from one of the languages provided

  • Step2: Click on 'Play/Pause' button and observe the audio/wave file sounds.

  • Step3: Study the difference using the 'Change Band' dropdown option (wideband and narrowband spectrograms) for different window sizes.

  • Step4: Verify the segmentation boundaries for various subword units (words, syllables and phonemes).

  • Step5: Verify that transitions between adjacent sound units from the formant contours observed from the spectrogram.

  • Step6: Identify/locate voiced/unvoiced/plosive/silence regions from the spectrogram.

  • Step7: Observe the time varying excitation and system characteristics from the spectrogram.

  • Step8: Write a brief note on the observations.

Part 2:

  • Step1: Choose an example from one of the languages provided.

  • Step2: Click on 'Play/Pause' button and observe the audio/wave file sounds.

  • Step3: Mark the boundaries of subword units (words, syllables and phonemes).

  • Step4: Look out for a message which pops up if the entered boundary value is incorrect.

  • Step5: Write a brief note on the observations.