Praat

Fadi Biadsy

Praat

• http://www.fon.hum.uva.nl/praat/• Developed by Paul Boersma and David

Weenink   Institute of Phonetic SciencesUniversity of Amsterdam, the Netherlands

• General purpose speech tool: editing, segmentation and labeling, audio DSP, and prosodic manipulation

Praat

• Pros: designed for speech analysis (not only sound edition or spectrogram visualization), nice GUI, scripting, active development and community, prosodic manipulation

• Cons: limited scripting language, slow GUI

Let’s…

• See the pitch contour of Solfege:

Let’s…

• Compare the spectrograms of1.  It’s hard to recognize speech

2. It’s hard to wreck a nice beach

• Record “it’s cool to play with praat”– Manipulate the pitch contour– Annotate this utterance

Task1

• Record a file with all the vowels and look at the formants to see how they differ

Task2

• Record files with each consonant class in the context of the same vowel, to see what the spectrograms look like: /pax/, /tax/, /kax/; /bax/, /dax/, /gax/

Task3

• Record a short sentence as angry speech, sad, speech, happy speech, and see what things (pitch contour, pitch mean andmax, intensity mean and max, spectral information) differ. choose something fully voiced if possible.

Task4

• Create a sound from equation with noise, and try to filter the noise out