A computer program for acoustic analysis of speech sounds


You can use Speech Analyzer to do the following tasks:

  • Perform fundamental frequency, spectrographic and spectral analysis, and duration measurements.
  • Add phonemic, orthographic, tone, and gloss transcriptions to phonetic transcriptions in an interlinear format.
  • Perform ethnomusicological analysis of music recordings.
  • Use slowed playback, repeat loops and overlays to assist with perception and mimicry of sounds for language learning.





Speech Analyzer 3.1 for Windows

Review the latest Changes information for more details on this release.


  1. Download Speech Analyzer installer.
  2. Double-click SpeechAnalyzer.
  3. Follow the installer instructions.

Help Documentation

Note: The following link to potentially out-of-date documentation. We may update the documentation in the future however at this time we do not have the resources to do so.

(Windows only) Download a CHM Windows Help file of our documentation. This is bundled in the Speech Analyzer installer, however we provide a download link here for your convenience.

(PDF) Instructor Guide
(PDF) Student Manual
(PDF) Training Course – Student Evaluation
(PDF) Training Course – Needs Assessment


Please ask for help on our Speech Analyzer Software Community Page.


If you are unable to obtain support through individual software support pages or the SIL Language Software Community, or have a general question about SIL language software, please contact us.