Tools for Speech Analysis
How do we choose?
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What kind of data?
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Which task?
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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
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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
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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
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No Unique Speech Tool
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No piece of software does everything
There are usually many ways of doing the thing
you want to do
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Features to Look For
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Visualization/Edition
Analysis
Speech manipulation
Annotation
Scripting
Plotting
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Supported formats
Platform/installation
Evolution/community
Accessibility
Price
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Possible Options
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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…..
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Links
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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)
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www.lpl.univ-aix.fr/~sqlab/ (phonedit)
www.sciconrd.com/pworks.htm (PitchWorks)
www.winpitch.com (WinPitch)
www.adobe.com (CoolEdit > Audition)
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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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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
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File Management
• Recording files and saving them
– New menu
• Opening files
– Read menu
• Long and short sound files
• Other file types
– Write menu
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Editing Options from Objects Window
• View
– Navigation
• Spectrum: spectral slice, spectrogram
• Pitch: settings, pitch information
• Intensity: settings, intensity information
• Formant: display controls, information
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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
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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
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Scripting
• Automatic, from history
– Ctrl  new Praatscript  Edit  Paste
history
– NB: you can run all or part of the script
• Writing scripts
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Help
• Online help, FAQ, manual
• Links from http://www.praat.org
• Additional tutorials, scripts, resources, user
groups
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Files to Play With
• http://www.cs.columbia.edu/~julia/cs4706/sound
s
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