AFsp Package

The AFsp package provides audio file utility programs and a library of routines for reading and writing audio files.

Audio File Utility Programs

Detailed documentation for the utility programs is available on-line: Audio File Programs and Routines.

Utility Program Source Code:: C-anguage source code for the utility programs is in the audio/xxxAudio directories
libAO Source Code:: C-language source code for the libAO library is in the libAO directory. These routines provide option processing for the utility programs. The include files for libAO library and for the libtsp library are in the include directory.
Documentation:: Documentation for the utility programs is in audio/html and audio/man directories
Executables:: Pre-built executables are included in the bin directory. Windows (command line) 64-bit executables are in the bin/Windows directory; Linux 64-bit executables built using the Windows subsystem for Linux are in the bin/Linux directory; Cygwin (64-bit) executables are in the bin/Cygwin directory.
MS Visual Studio: A 2017 MS Visual Studio C project to build both the utility programs and the libraries is in the MSVC directory.
Test Script: The test directory contains a Bash script for testing the utility programs in a Unix environment. The test can be initiated by running Make in the test directory. The Makefile assumes that the executables are in the main bin directory. The Makefile runs the test script and compares the output with a reference file.

Filters:

The AFsp package includes the filters from the ITU-T Software Tool Library (G.191) in a form that can be used directly with the FiltAudio program. These filter files are in the filters directory.

Audio File Routines Library:

Detailed documentation for the audio file routines is available on-line: Audio File Programs and Routines.

Audio File Routines:: C-anguage source code for the audio file processing routines is in the libtsp directory. The AF subdirectory contains the main routines for processing audio files. The other subdirectories folders routines that are used by the audio file routines.
Documentation:: Documentation for the audio file routines is in libtsp/html and libtsp/man directories.

Copyright Notice

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Downloads

AFsp-v10r5.tar.gz 2023-04
AFsp-v10r4b.tar.gz 2023-02
AFsp-v10r3.tar.gz 2020-11
AFsp-v10r2.tar.gz 2018-11
AFsp-v10r1a.tar.gz 2017-10
AFsp-v9r0.tar.gz 2010-09
AFsp-v8r2.tar.gz 2006-06
AFsp-v7r2.tar.gz 2003-11
AFsp-v6r8.tar.gz 2003-05

Version Changes

Changes in V10r5

A new extract option in CopyAudio to extract specific channels from input file(s).
CopyAudio input channels are referred to as a to z.
Loudspeaker locations can be specified with a group attribute such as "5.1-surround".
CompAudio ignores gain values for the statistics of individual files, but the gains are taken into account for the comparison between two files.

Changes in V10r4b

Fix for speaker location settings for WAVE files when the number of locations is large.
CopyAudio input channels can now be referred to as a to z (as well as A to Z).
Default file type, if not specified and the file extension is unknown, is WAVE for both Unix and Windows. Previously AU was the default file type for Unix.
For the case that the number of significant bits in an integer format is less than the container size (for instance 12 bits in a 16 bit integer word), CompAudio now prints a message if the low order (non-significant) bits are not zero.

Changes in V10r3

CompAudio allows more channels to be displayed. Option to try a range of delays has been revamped.
Apply a fix to Traktion AIFF files with a malformed header.

Changes in V10r2

FiltAudio updated to show the number of samples in the output file header
Executables for Cygwin, Linux, Win32, Win64

Changes in V10r1a

Changes to information record printing to allow 8-bit characters
Info record names more consistent for different file types
Added new audio file types and data

AIFF-C-sowt PCM sound files for reading and writing
Read/Write bit-reversed mu-law format
Text data file (with header) for importing / exporting data

InfoAudio prints the header/data structure for audio files
Executables built using Cygwin, Linux, and Microsoft Visual Studio 2017 are included
CopyAudio supports a larger number of channels
Information records gathered from more file types.

More text fields in file headers are now returned as information records (includes text information from WAVE files with a Broadcast Wave Format chunk)
Information chunks for WAVE files now stored in the header (rather than after the data)

Internal data scaling rationalized - it can be changed with an optional parameter

Changes in v9r0

MSVC files updated for Visual C++ 2008
Use #def to avoid warnings with MSVC compiler
Use local typedef names to avoid conflicts with standard names
Fix for parameter scanning (STdec1val)

Changes in v8r2

User identity in default information fields removed
FiltAudio and ResampAudio use double precision internally

Changes in v7r2

Internal changes, fix documentation on GenTone/GenNoise to reflect the new normalization
Fix for Compaudio for multi-channel files
Support for double (and float) buffers (new open and read routines)
Standard normalization for internal data is now -1 to +1
The old open and read routines are still supported, giving the old normalization (returned data values between -32768 and +32767)
Audio programs now use the standard normalization. This change is mainly transparent to users, though the output printout for CompAudio now gives both absolute and normalized values.

Changes in v6r8

Default scaling for headerless files changed