#### Beyond Linux® From Scratch (systemd Edition) - Version r13.0-491

### Chapter 42. Multimedia Libraries and Drivers

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# SoundTouch-2.4.1

## Introduction to SoundTouch

The SoundTouch package contains an open-source audio processing library that allows changing the sound tempo, pitch and playback rate parameters independently from each other.

### Note

Development versions of BLFS may not build or run some packages properly if LFS or dependencies have been updated since the most recent stable versions of the books.

### Package Information

- Download (HTTP): https://www.surina.net/soundtouch/soundtouch-2.4.1.tar.gz

- Download MD5 sum: 6e8732dea92b6e65fc4ee75528ab0524

- Download size: 592 KB

- Estimated disk space required: 8.4 MB

- Estimated build time: 0.2 SBU

## Installation of SoundTouch

### Note

The tarball expands to 'soundtouch' instead of the expected 'soundtouch-2.4.1'

Install SoundTouch by running the following commands:

### Caution

The bootstrap command below fails if the ACLOCAL environment variable is set as specified in Xorg-7. If it is used, ACLOCAL needs to be unset for this package and then reset for other packages.

    ./bootstrap &&
    ./configure --prefix=/usr \
                --docdir=/usr/share/doc/soundtouch-2.4.1 &&
    make

This package does not come with a test suite.

Now, as the `root` user:

    make install

## Command Explanations

`--enable-openmp`: This switch adds support for running the algorithms in parallel across several processor cores using OpenMP implementation provided by GCC.

## Contents

Installed Program: soundstretch
Installed Library: libSoundTouch.so
Installed Directories: /usr/include/soundtouch and /usr/share/doc/soundtouch-2.4.1

### Short Descriptions

soundstretch | is a program for processing WAV audio files by modifying sound tempo, pitch and playback rate properties independently from each other
`libSoundTouch.so` | contains SoundTouch API functions

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