Free audio sequencer software for linux

Dino is a MIDI sequencer for GNU/Linux. Dino is a pattern-based sequencer, which means that you write small patterns of MIDI events that you can repeat and arrange to create a whole song.

Each track has its own patterns, so you can for example play the same drum pattern over and over again while you play different lead synth patterns and basslines.

The arrangement editor

The GUI is divided into three tabs. The first tab, "Arrangement" is where you
add new tracks, arrange patterns, and edit the tempo map. When you first
start Dino there will be no tracks and all you will see is the "BPM" track.
Here you can add new tempo changes with the left button, remove them with
the right button (except the first one - if you removed it the BPM for the
whole song would be undefined, so Dino will not let you remove it) and change
their BPM by middle-clicking and dragging up and down. This mousing pattern
is used in most places in Dino - left adds, middle modifies, right removes.

If you click the + button in the arrangement tab you will add a track. When
you add a track you can choose a name for it, which MIDI port it should connect
to, and the MIDI channel it should send events to. You can edit all these
properties later too by clicking the Properties button (the one with the
tool). The selected track (the one that has a dark blue background for its
name) can be removed by clicking the trashcan button.

Each track is shown as a strip of blocks, where each block represents a beat.
When you have created patterns for your track (see the text about the "Patterns"
tab below) you can use the left mouse button to click on a track and bring up
a popup menu listing all patterns for that track. The one you select will be
added to the track at the beat you clicked. You can modify its length with
the middle mouse button and delete it with the right (this does not affect
the actual pattern at all, just how this instance of it is played).

The pattern editor

In the pattern editor you can add, edit, and remove patterns for the different
tracks. Look at the tooltips for the buttons in the upper row and it should
be fairly obvious how to add and delete patterns. When you have added a pattern
you can also add and delete controllers in it. Controllers are e.g. pitchbend
and MIDI CC controllers. The active controller can be edited in the box at the
bottom of this tab.

The main box here is the note editor, where you edit the notes in the active
pattern. You add new notes with Ctrl-left button, change their length with the
middle button, change their velocity with Ctrl-middle button and delete them
with Ctrl-right button. You can also use the left mouse button to select,
unselect, and drag notes around - clicking a note will select it, shift-clicking
will unselect or select it depending on whether it was selected or not, clicking
and dragging notes will move the selected notes around on the grid.

There are also basic clipboard commands, you can cut, copy, paste and delete
the current selection. When you paste you will have to click where you want
the clipboard content to appear. You can also middle-click outside all notes to
insert a copy of the current selection there without affecting the clipboard
content.

The info editor

The third tab simply has entry fields for the songs title, author, and info. It should be obvious how to use them.

Purely character-based applications are sometimes referred to as cursed applications (originating for the library ncurses which is also used for this sequencer).

They can be run in any terminal. Furthermore, they are particularly suited for being operated over the network as terminal applications generate only little traffic. Sometimes, repositioning the mouse as required by graphical user-interfaces may not be desired, especially if the user has to switch between the PC and other equipment, frequently.

But particularly for visually impaired people, graphical user interfaces can be a barrier hard to overcome. Screen readers can help to read the text and so-called braille-displays can be used to make alphanumerical output by an application become tangible by the finger tips. However, these tools are valuable only, if the application does not make too much use of graphical symbols and different kinds of interaction with the mouse.

Cursed MIDI Sequencer is a MIDI-Sequencer which targets both terminal purists and visually impaired people. The purely character- based interface provides the kind of information needed by braille-displays and screen-readers.

But CuSE can also enable normally sighted people to run the sequencer over a network or on a low-end embedded device.

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::Beep is a Perl module to use your computer beeper in fancy ways.

SYNOPSIS

#functional simple way
use Audio::Beep;

beep($freq, $milliseconds);

#OO more musical way
use Audio::Beep;

my $beeper = Audio::Beep->new();

# lilypond subset syntax accepted
# relative notation is the default
# (now correctly implemented)
my $music = "g f bes c8 f d4 c8 f d4 bes c g f2";
# Pictures at an Exhibition by Modest Mussorgsky

$beeper->play( $music );

Perl Audio Converter (PAC) is a tool for converting multiple audio types from one format to another. It supports MP2, MP3, Ogg Vorbis, FLAC, Shorten, Monkey Audio, FAAC (AAC/M4A/MP4), Musepack (MPC), Wavpack (WV), OptimFrog (OFR/OFS), TTA, LPAC, Kexis (KXS), AIFF, AC3, Lossless Audio (LA), AU, SND, RAW, VOC, SMP, RealAudio (RA/RAM), WAV, and WMA.
It can also convert audio from the following video formats/extensions: RM, RV, ASF, DivX, MPG, MKV, MPEG, AVI, MOV, OGM, QT, VCD, VOB, and WMV. A CD ripping function with CDDB support, batch and playlist conversion, tag preservation for most supported formats, independent tag reading/writing, and extensions for Konqueror and amaroK is also provided.
Enhancements:
- Added: MP4::Info dependency IO::String to pacpl-install
- Updated: License GPLv3
- Bug Fix: Directory conversions. pacpl was claiming the directory was empty and prompting to use the --recursive option...Thanks to John Meyer for the report.

Audio::LADSPA::Buffer is a Perl module for LADSPA buffer.

SYNOPSIS

use Audio::LADSPA;

my $buffer = Audio::LADSPA::Buffer->new($size);

$plugin->connect(Port name => $buffer);

$buffer->set( @values );

# or get a buffer from a plugin..

$buffer2 = $plugin->get_buffer(Other port);

# make audio buffer louder

$buffer *= 2;

Audio::LADSPA::Buffer objects implement the connections between Audio::LADSA::Plugin objects. You can set up the buffer, and let some plugin write to it, while others read from it, or read from or write to it yourself.

There is no real difference between audio and control buffers, except that control buffers have a size of 1 sample *) and audio buffers are usually bigger.
*) Samples in LADSPA are implemented as native floats.

Audio::Moosic is a Moosic client library for Perl.

SYNOPSIS

use Audio::Moosic;

$moo = Audio::Moosic::Unix->new();

$moosic->append(/home/me/somewhat.ogg);
$moosic->play;
print $moosic->current, "n";
$moosic->pause;
...

Audio::Moosic acts as a client for the musical jukebox programm Moosic (http://nanoo.org/~daniel/moosic/) by Daniel Pearson.

Using Audio::Moosic you can connect to a moosic server either via an UNIX socket or an INET socket.

Audio::Ao is a Perl wrapper for the Ao audio library.

SYNOPSIS

use Audio::Ao qw(:all);

initialize_ao;
my $device = open_live(default_driver_id(), 16, $rate, $channels,
is_big_endian(), {});
while (#have data) {
play($device, $data_buffer, $len_of_buffer);
}
close_ao($device($device));
shutdown_ao;

Provides access to Libao, "a cross-platform library that allows programs to output PCM audio data to the native audio devices on a wide variety of platforms." Libao currently supports OSS, ESD, ALSA, Sun audio, and aRts.