Free convert audio software for linux

A front end for converting Audio CDs to compressed formats.

The MassRip package is a set of tools for converting and maintaining Audio CDs in compressed audio formats like mp3 and ogg.

This includes massrip which converts CDs to the compressed formats using cddb for track and album information. As well album_rename is for adjusting the names and meta-data tags for albums of files.

Audio Convert is a script to convert Wav, Ogg, MP3, MPC, FLAC, APE, or WMA files into Wav, Ogg, MP3, MPC, FLAC, or APE files.
It has an easy-to-use interface that makes it possible to fill in the tags for a few formats and choose the quality of compression.
The script was initially designed for the nautilus file browser, and can be easily installed into nautilus by copying it to the nautilus-scripts directory, at which point you can right click on the desired audio file(s) and choose "audio-convert" from the "scripts" menu.
The script is also known to work on rox or directly from a shell.
Enhancements:
- The installer was modified to create the directory it is supposed to create.

Q-Audio is a digital audio interface for Q. Q-Audio project contains three modules which together provide the basic functionality needed to write digital audio applications.
The audio module implements a (nearly) real-time audio interface on top of the PortAudio library. The sndfile module allows you to access sound files in various formats using libsndfile.
The wave module provides basic operations for creating and manipulating wave data, including operations to convert sample rates, to calculate Fourier transforms, and to display wave data in a GGI visual.
About Q language:
Q is a functional programming language based on term rewriting. Thus, a Q program or "script" is simply a collection of equations which are used to evaluate expressions in a symbolic fashion. The equations establish algebraic identities and are interpreted as rewriting rules in order to reduce expressions to "normal forms". For instance, here is how you define a function sqr which squares its argument by multiplying it with itself:
sqr X = X*X;
Note that, as in Prolog, capitalized identifiers are used to indicate the variables in an equation, which are bound to the actual values when an equation is applied. Equations may also include a condition part, as in the following definition of the factorial function:
fact N = N*fact (N-1) if N>0;
= 1 otherwise;
Functions on structured arguments are defined by "pattern matching". E.g., the product of a list (denoted in Prolog-like syntax) can be computed with these two equations:
prod [] = 1;
prod [X|Xs] = X*prod Xs;
With this definition, the factorial can now also be defined as follows (the notation [1..N], as in Haskell, denotes an arithmetic sequence):
fact N = prod [1..N];
As you can see, the definitions are really just like mathematical equations. The syntax is superficially similar to other modern functional languages like Miranda and Haskell, except that Q is "free-format", i.e., it does not use layout to indicate syntactical structure (thus the semicolon is used to terminate an equation).
Due to its term rewriting heritage, Q goes well beyond most other functional languages in that it also allows you to perform computations with symbolic expressions. For instance, with the definition of the sqr function from above, you will find that sqr (X+1) evaluates to (X+1)*(X+1). This might first look like an arcane feature, but it is actually quite useful, because you can try your definitions with symbolic inputs, too.
Enhancements:
- src/wave.c: minor fixes for compatibility with latest gcc versions

Audio Transcriber records large audio samples, like a tape or radio broadcast, to your hard drive and splits it into tracks to be burned onto CD-R media.

The goal of Audio Transcriber is to make it easy to transfer audio tapes, LPs, or radio broadcasts to tracks on CD-R/CD-RW.

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.

PDL::Audio is a Perl module for some PDL functions intended for audio processing.

SYNOPSIS

use PDL;
use PDL::Audio;

Oh well. Not much "introductory documentation" has been written yet.

NOTATION

Brackets around parameters indicate that the respective parameter is optional and will be replaced with some default value when absent (or undef, which might be different in other packages).

The sampling frequency and duration are by default (see individual descriptions) given in cycles/sample (or samples in case of a duration). That means if you want to specify a duration of two seconds, you have to multiply by the sampling frequency in HZ, and if you want to specify a frequency of 440 Hz, you have to divide by the sampling frequency:

# Syntax: gen_oscil duration*, frequency/
$signal = gen_oscil 2*HZ, 440/HZ;
# with a sampling frequency of 44100 Hertz:
$signal = gen_oscil 2*44100, 440/44100;

To help you, the required unit is given as a type suffix in the parameter name. A "/" means that you have to divide by the sampling frequency (to convert from Hertz) and a suffix of "*" indicates that a multiplication is required.
Most parameters named "size", "duration" (or marked with "*") can be replaced by a piddle, which is then used to give length and from (mono/stereo).

HEADER ATTRIBUTES

The following header attributes are stored and evaluated by most functions. PDL::Audio provides mutator methods for all them (e.g.

print "samplerate is ", $pdl->rate;
$pdl->comment("set the comment to this string");
rate

The sampling rate in hz.
filetype

The filetype (wav, au etc..). Must be one of:

FILE_NEXT FILE_AIFC FILE_RIFF FILE_BICSF FILE_NIST FILE_INRS FILE_ESPS
FILE_SVX FILE_VOC FILE_SNDT FILE_RAW FILE_SMP FILE_SD2 FILE_AVR
FILE_IRCAM FILE_SD1 FILE_SPPACK FILE_MUS10 FILE_HCOM FILE_PSION
FILE_MAUD FILE_IEEE FILE_DESKMATE FILE_DESKMATE_2500 FILE_MATLAB
FILE_ADC FILE_SOUNDEDIT FILE_SOUNDEDIT_16 FILE_DVSM FILE_MIDI
FILE_ESIGNAL FILE_SOUNDFONT FILE_GRAVIS FILE_COMDISCO FILE_GOLDWAVE
FILE_SRFS FILE_MIDI_SAMPLE_DUMP FILE_DIAMONDWARE FILE_REALAUDIO
FILE_ADF FILE_SBSTUDIOII FILE_DELUSION FILE_FARANDOLE FILE_SAMPLE_DUMP
FILE_ULTRATRACKER FILE_YAMAHA_SY85 FILE_YAMAHA_TX16 FILE_DIGIPLAYER
FILE_COVOX FILE_SPL FILE_AVI FILE_OMF FILE_QUICKTIME FILE_ASF
FILE_YAMAHA_SY99 FILE_KURZWEIL_2000 FILE_AIFF FILE_AU
path

The filename (or file specification) used to load or save a file.
format

Specifies the type the underlying file format uses. The samples will always be in short or long signed format.

Must be one of

FORMAT_NO_SND FORMAT_16_LINEAR FORMAT_8_MULAW FORMAT_8_LINEAR
FORMAT_32_FLOAT FORMAT_32_LINEAR FORMAT_8_ALAW FORMAT_8_UNSIGNED
FORMAT_24_LINEAR FORMAT_64_DOUBLE FORMAT_16_LINEAR_LITTLE_ENDIAN
FORMAT_32_LINEAR_LITTLE_ENDIAN FORMAT_32_FLOAT_LITTLE_ENDIAN
FORMAT_64_DOUBLE_LITTLE_ENDIAN FORMAT_16_UNSIGNED
FORMAT_16_UNSIGNED_LITTLE_ENDIAN FORMAT_24_LINEAR_LITTLE_ENDIAN
FORMAT_32_VAX_FLOAT FORMAT_12_LINEAR FORMAT_12_LINEAR_LITTLE_ENDIAN
FORMAT_12_UNSIGNED FORMAT_12_UNSIGNED_LITTLE_ENDIAN COMPATIBLE_FORMAT

PDL::Audio conviniently defines the following aliases for the following constants, that are already correct for the host byteorder:

FORMAT_ULAW_BYTE FORMAT_ALAW_BYTE FORMAT_LINEAR_BYTE
FORMAT_LINEAR_SHORT FORMAT_LINEAR_USHORT FORMAT_LINEAR_LONG
FORMAT_LINEAR_FLOAT FORMAT_LINEAR_DOUBLE
comment

The file comment (if any). device

The device to output audio. One of:

DEV_DEFAULT DEV_READ_WRITE DEV_ADAT_IN DEV_AES_IN DEV_LINE_OUT
DEV_LINE_IN DEV_MICROPHONE DEV_SPEAKERS DEV_DIGITAL_IN DEV_DIGITAL_OUT
DEV_DAC_OUT DEV_ADAT_OUT DEV_AES_OUT DEV_DAC_FILTER DEV_MIXER
DEV_LINE1 DEV_LINE2 DEV_LINE3 DEV_AUX_INPUT DEV_CD_IN DEV_AUX_OUTPUT
DEV_SPDIF_IN DEV_SPDIF_OUT

Audio::TagLib::Shell is a mini shell of Audio::TagLib.

SYNOPSIS

$> perl -MAudio::TagLib::Shell -e shell
$tag:>open
file openned successfully
$tag:o>title
< title in tag >
$tag:o>artist
< artist in tag >
$tag:o>channels
2
$tag:o>setComment blah blah blah
comment set successfully
$tag:o>comment
blah blah blah
$tag:o>save
data saved successfully
$tag:>exit

A mini shell of Audio::TagLib, for viewing and editing common audio meta data on the fly.

The functionality offerred follows the abstract interface designing of Audio::TagLib, for instance, Audio::TagLib::Tag and Audio::TagLib::AudioProperties.