CMU Artificial Intelligence Repository
OGI Speech Tools: Speech data manipulation tools
This directory contains the OGI Speech Tools, a set of speech data
manipulation tools developed at the Center for Spoken Language
Understanding (CSLU) at the Oregon Graduate Institute of Science and
Technology (Portland Oregon). The tools can be used to compute and
display signal representations, label speech at different levels
(e.g., phonetic, phonemic and word), train neural network classifiers,
and display the output of classification or recognition algorithms
time-aligned with the speech.
The distribution includes, among other things,
+ LYRI, an X Windows tool for displaying data in a time
synchronous fashion (speech signal, spectrograms, phoneme
+ NOPT, a neural network training package, which uses Conjugate
Gradient descent optimization.
+ LIBNSPEECH, an extensive set of C library signal processing
routines for the manipulation of speech data, including PLP
Analysis, Rasta PLP Analysis, Linear Predictive Coding, Mel
Cepstrum Coding, and Fast Fourier Transform.
+ Utilities for converting file formats, such as ADC to NIST,
to/from mu-law, filtering the speech waveform, and
ascii/binary data streams.
+ A Vector-Quantizer based on the Linde Buzo and Gray (LBG) algorithm.
Version: 1.0 (20-OCT-93)
Requires: ANSI C
Ports: Sun4, DECStation (Ultrix), RS6000 (AIX), HPPA-RISC (HPUX 8.0)
CD-ROM: Prime Time Freeware for AI, Issue 1-1
Mailing List: To join the mailing list for notification of additions
and changes, send mail to firstname.lastname@example.org.
Author(s): Mark Fanty, Johan Schalkwyk, Yeshwant Muthusamy, Ron Cole,
Etienne Barnard, Fill Aleva, John Pochmara, Malcom Slaney,
Contact: Johan Schalkwyk
Center for Spoken Language Understanding
Oregon Graduate Institute
Authors!Aleva, Authors!Barnard, Authors!Cole, Authors!Fanty,
Authors!Muthusamy, Authors!Olivier, Authors!Pochmara,
Authors!Schalkwyk, Authors!Slaney, C!Code, CSLU,
Conjugate Gradient Descent Optimization, FFT,
Fast Fourier Transform, LIBNSPEECH, LYRI,
Linear Predictive Coding, Mel Cepstrum Coding, Mu-law, NOP,
Neural Networks, OGI Speech Tools, PLP Analysis,
Rasta PLP Analysis, Spectrograms, Speech Processing,
Speech Recognition, Vector Quantization
Last Web update on Mon Feb 13 10:28:29 1995