Tools for Speech Analysis

2 How do we choose? What kind of data? Which task?

3 Data Speech content (noise, multivoice,…) Data File –Sound/Transcription/PitchContour –Sampling/Quantization 16k 12k 8k 4k 8bit –Size: how much data? –Format Sound: wav, wma, mp3, ogg, aiff, aifc, au, vox, raw, sd, CSL, Ogg/Vorbis, NIST/Sphere Transcription types

4 What tasks do we want to perform ? Visualization and Editing: –Record, play, edit, mix, add effects Analysis: –spectral, pitch, intensity Speech manipulation: –Filtering, mixing, adding effects, prosodic manipulation Annotation: –segmentation, labeling Scripting: –Batch, communication with outside

5 Sample Tasks Create stimuli for an experiment (i.e. hybridization) Create a database for TTS Create a prosodic database Analyze a speech corpus from experiment or ‘real’ recordings Verify/correct an automatic segmentation or pitch track

6 No Unique Speech Tool No piece of software does everything There are usually many ways of doing the thing you want to do

7 Features to Look For Visualization/Edition Analysis Speech manipulation Annotation Scripting Plotting Supported formats Platform/installation Evolution/community Accessibility Price

8 Possible Options Goldwave(audio editor) Esps Xwaves(routines + visual.) Praat(speech analysis) Wavesurfer(speech editor) Transcriber(annotation tool) Matlab(general purpose soft) OGI speech tools(routines + app. dev.) …winpitch, pitchworks, phonedit, cooledit…..

9 Links (Matlab) (phonedit) (PitchWorks) (WinPitch) (CoolEdit > Audition)

10 Praat Developed by Paul Boersma and David Weenink at the Institute of Phonetic Sciences, University of Amsterdam General purpose speech tool : editing, segmentation and labeling, prosodic manipulation

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12 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, native format of transcription and pitch files

13 File Management Recording files and saving them –New menu Opening files –Read menu Long and short sound files Other file types –Write menu

14 Editing Options from Objects Window View –Navigation Spectrum: spectral slice, spectrogram Pitch: settings, pitch information Intensity: settings, intensity information Formant: display controls, information

15 Modifying the Data Stylizing the pitch contour: –From Praat objects, Go to manipulation –Edit (the new object) –Pitch  stylize pitch (2st) –Then …. Modifying pitch Modifying duration

16 Annotation: Textgrids From objects –Annotate  To textgrid Labeling Point vs. interval tiers NB: remember to select the interval or point first in the waveform or spectrogram before trying to insert a label

17 Scripting Automatic, from history –Ctrl  new Praatscript  Edit  Paste history –NB: you can run all or part of the script Writing scripts

18 Help Online help, FAQ, manual Links from Additional tutorials, scripts, resources, user groupsAdditional tutorials, scripts, resources, user groups

19 Files to Play With shttp:// s