Tools for Speech Analysis

Tools for Speech Analysis

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

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 3

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 4

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 5

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

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

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 . 8

Links www.goldwave.com www.speech.kth.se/software/#esps www.praat.org www.speech.kth.se/software/#wavesurfer www.cse.ogi.edu/toolkit www.mathworks.com (Matlab) www.lpl.univ-aix.fr/ sqlab/ (phonedit) www.sciconrd.com/pworks.htm (PitchWorks) www.winpitch.com (WinPitch) www.adobe.com (CoolEdit Audition) 9

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 10

11

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 12

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

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

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 15

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 16

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

Help Online help, FAQ, manual Links from http://www.praat.org Additional tutorials, scripts, resources, user grou ps 18

Files to Play With http://www.cs.columbia.edu/ julia/cs4706/sound s 19