Free audio file formats software for linux

AudioFormat is a simple, unobtrusive audio format converter for your GNOME desktop. The project integrates with Nautilus and the desktop-wide audio profile settings.

AudioFormat is available under the terms of the BSD License.

The Audio File Library provides a uniform and elegant API for accessing a variety of audio file formats, such as AIFF/AIFF-C, WAVE, NeXT/Sun .snd/.au, Berkeley/IRCAM/CARL Sound File, Audio Visual Research, Amiga IFF/8SVX, and NIST SPHERE. Supported compression formats are currently G.711 mu-law and A-law and IMA and MS ADPCM.
Key goals of the Audio File Library are file format transparency and data format transparency. The same calls for opening a file, accessing and manipulating audio metadata (e.g. sample rate, sample format, textual information, MIDI parameters), and reading/writing sample data will work with any supported audio file format. Likewise, the format of the audio data presented to the application need not be like the format of the data contained in the file.
Enhancements:
- libaudiofile/Makefile.am, libaudiofile/audiofile.exports:
- Export only public entry points.
- Released version 0.2.6 of the Audio File Library.

Audio Format Converter is a an Amarok script that allows you to convert the audio format of the tracks in the playlist. The script takes a snapshot of the current playlist. Once the conversion has started, you can go back to using amaroK normally.

Supported files for both input and output include .flac, .ogg, .mp3, .mpc, .m4a, and .wav. Additionally, .wma, .ra, and are supported for input. (See below for the required packages.)

I dont know how to do anything with metatags from .wma or .ra. All I know is tags will get transferred to the output file if and only if the tags show up in the amaroK playlist. If they arent there, I suggest converting the files, then using a real tag editor like Easy Tag to put them in to the converted files.

This has only been tested on amaroK 1.2.4, but it should work on any amaroK>=1.2

The original files are NOT deleted. If the output file will overwrite an existing file, a dialog will appear to ask you whether to go ahead and overwrite or to skip the track. If you try to convert a file into the format its already in, a dialog will ask you how to handle this situation.

Depending on the number of tracks and the speed of your computer, this can take a long time to run. With each track, a passive popup will let you know what track its processing. At any time, you can stop the script by clicking stop in the amaroK script GUI.

Audio::File::AudioProperties is a Perl module that can abstract an audio files audio properties.

Audio::File::AudioProperties is the base class for other file format independant audio property classes like Audio::File::Flac::AudioProperties or Audio::File::Ogg::AudioProperties. You should not use this class yourself exept youre writing an own file format dependant subclass.

METHODS

new

Constructor. Creates new Audio::File::AudioProperties object. You shoud not use this method yourself. Its called by the filetype-dependant subclasses of Audio::File::Type automatically.

init

Initializes the object. Its called by the constructor and empty by default. Its ought to be overwritten by subclasses.

length

Returns the length of the audio file in seconds.

bitrate

Returns the bitrate of the file.

sample_rate

Returns the sample rate of the audio file.

channels

Returns the number of channels the audio file has.

all

Get all audio properties.

Audio::Ecasound is a Perl binding to the ecasound sampler, recorder, fx-processor.

SYNOPSIS
One function interface:
use Audio::Ecasound qw(:simple);

eci("cs-add play_chainsetup");
eci("c-add 1st_chain");
eci("-i:some_file.wav");
eci("-o:/dev/dsp");
# multiple n separated commands
eci("cop-add -efl:100
# with comments
cop-select 1
copp-select 1
cs-connect");
eci("start");
my $cutoff_inc = 500.0;
while (1) {
sleep(1);
last if eci("engine-status") ne "running";

my $curpos = eci("get-position");
last if $curpos > 15;

my $next_cutoff = $cutoff_inc + eci("copp-get");
# Optional float argument
eci("copp-set", $next_cutoff);
}
eci("stop");
eci("cs-disconnect");
print "Chain operator status: ", eci("cop-status");

Object Interface

use Audio::Ecasound;

my $e = new Audio::Ecasound;
$e->on_error();
$e->eci("cs-add play_chainsetup");
# etc.
Vanilla Ecasound Control Interface (See Ecasounds Programmer Guide):
use Audio::Ecasound qw(:std);

command("copp-get");
$precise_float = last_float() / 2;
command_float_arg("copp-set", $precise_float);
warn last_error() if error();
IAM Interface, pretend interactive mode commands are functions.
use Audio::Ecasound qw(:iam :simple);

# iam commands as functions with s/-/_/g
my $val = copp_get;
copp_set $val+0.1; # floats are stringified so beware
eci("-i /dev/dsp"); # not all commands are exported

Audio::Ecasound provides perl bindings to the ecasound control interface of the ecasound program. You can use perl to automate or interact with ecasound so you dont have to turn you back on the adoring masses packed into Wembly Stadium.
Ecasound is a software package designed for multitrack audio processing. It can be used for audio playback, recording, format conversions, effects processing, mixing, as a LADSPA plugin host and JACK node. Version >= 2.2.X must be installed to use this package. "SEE ALSO" for more info.

Audio::TagLib::MPEG::File is an MPEG file class with some useful methods specific to MPEG.

SYNOPSIS

use Audio::TagLib::MPEG::File;

my $i = Audio::TagLib::MPEG::File->new("sample file.mp3");
print $i->tag()->artist()->toCString(), "n"; # got artist

This implements the generic Audio::TagLib::File API and additionally provides access to properties that are distinct to MPEG files, notably access to the different ID3 tags.

Python Audio Tools are a collection of audio handling programs which work from the command line. These include programs for CD extraction, track conversion from one audio format to another, track renaming and retagging, track identification, CD burning from tracks, and more.
Supports internationalized track filenames and metadata using Unicode. Works with high-definition, multi-channel audio as well as CD-quality. Track conversion uses multiple CPUs or CPU cores if available to greatly speed the transcoding process. Track metadata can be retrieved from FreeDB or FreeDB-compatible servers. Audio formats supported are:
- WAV
- AIFF
- Sun AU
- FLAC
- WavPack
- Monkeys Audio
- MP3
- MP2
- Ogg Vorbis
- Ogg Speex
- M4A
Easy to install and use:
I dont like programs with lots of obscure dependencies, so Ive written Python Audio Tools to require as few external libraries and programs as possible. Most formats require only one or two common executables and some require none at all. Installation utilizes Pythons built-in distutils, but a provided makefile reduces the process to a simple "make install" command.
The programs that make up Python Audio Tools provide a consistent interface for painless switching between them. man pages are included, as is a lengthy manual for both users and programmers. See the short tutorial in the documentation for an illustration of their usage.
These Python Audio Tools are designed with Unix-like systems in mind. Although most of it is written in pure Python, the libcdio library is used to read from a CD-ROM drive. If one is willing to forgo the CD-based tools, Python Audio Tools is fully portable so long as the required helper applications are present. I have used it on the i386, x86_64 and ppc architectures without difficulty.
Standards compliant
Because Python Audio Tools sticks very close to established, documented standards, it has no trouble interoperating with other audio-handling programs. If you want to rip CDs with Exact Audio Copy, batch convert them to M4As with these tools and play them back in iTunes, thats no problem.
Enhancements:
- Revamped the track metadata system.
- Improved the file detection routines.
- Minor bugfixes.

Audio::M4P is a Perl module that provides M4P/MP4/M4A QuickTime audio music format modules.

M4P is a QuickTime protected audio file format.

SYNOPSIS

use Audio::M4P::QuickTime;

my $mp4file = "file.m4p";
my $qt = new Audio::M4P::QuickTime(file => $mp4file);
my $tags = $qt->GetMetaInfo;
print "Artist is $tags->{ARTIST}n" if $tags->{ARTIST};


use Audio::M4P::Decrypt;

my $outfile = mydecodedfile;
my $deDRMS = new Audio::M4P::Decrypt;
$deDRMS->DeDRMS($mp4file, $outfile);

See also the individual pod documentation for Audio::M4P::QuickTime
and Audio::M4P::Decrypt.