Table of Contents

1. Introduction

1.1 What is SPro?

1.2 How to read this manual?

1.3 Installing SPro

1.4 Reporting bugs

1.5 Contributors

2. Speech analysis techniques

2.1 Pre-emphasis and windowing

2.2 Variable resolution spectral analysis

2.3 Filter-bank analysis

2.4 Linear predictive analysis

2.5 Cepstral analysis

2.6 Deltas and normalization

3. The SPro tools

3.1 File formats

3.1.1 Waveform streams

3.1.2 Feature streams

3.2 Common options

3.2.1 I/O options

3.2.2 Waveform framing options

3.2.3 Feature vector options

3.2.4 Miscellaneous options

3.3 I/O via stdin and stdout

3.4 Extracting features

3.4.1 Filter-bank analysis tools

Filter-bank log-magnitude features

Filter-bank cepstral features

3.4.2 LPC analysis tools

Linear prediction coefficients

Linear prediction cepstrum

3.5 Manipulating feature streams

3.5.1 Operations on feature streams

3.5.2 Exporting features

3.5.3 Importing from a previous SPro release

3.5.4 Copy options

4. The SPro library

4.1 Waveform streams

4.1.1 Memory allocation

4.1.2 Opening streams

4.1.3 Reading frames

4.1.4 Computing frame energy

4.2 Feature description flags

4.3 Feature streams

4.3.1 Opening feature streams

Conversion flags

Opening for I/O

Accessing stream attributes

4.3.2 Reading and writing feature vectors

4.3.3 Seeking into a stream

4.4 Storing features without streams

4.4.1 Buffer allocation

4.4.2 Accessing buffer elements

4.4.3 Buffer I/O

4.4.4 Buffers and streams

4.5 Feature conversion

4.6 FFT-based functions

4.6.1 Fourier transform

4.6.2 Filter-bank

4.6.3 Cosine transform

4.7 LPC-based functions

4.7.1 Linear prediction

4.7.2 LPC conversion

4.8 Miscellaneous functions

5. Quick reference guide

6.2 Changes from previous version

6.3 Compatibility

A. GNU Free Documentation License

A.1 ADDENDUM: How to use this License for your documents

This document was generated by Guillaume Gravier on March, 5 2004 using texi2html