Audio Sequencer Software Applications Computer Science Essay

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An audio sequencer is a software tool for computer to edit, manage and synthesize computer-generated music. These softwares are also called MIDI (Musical Instrument Digital Interface) softwares. Many audio sequencers have characteristics for limited audio music notation and most of them are able to display audio signals in a piano like roll annotation.

A sequencer is defined as a Multi Track MIDI combined with Digital Audio Recording application Software. It is the most important feature of all computer-related recording studios. The most important feature of these audio sequencer softwares is that they all are MIDI compatible, and hence can communicate with each other. They all uses a specific protocol called MIDI 1.0.

There are wide ranges of such musical softwares available in market today. Some softwares are free or open source and some demands some money. These softwares are made keeping different platforms in mind. Some are made for Linux, some for Windows and some for Mac OS. Below a small list of such products:

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Rosegarden is a general purpose music composer and an all-round audio MIDI sequencer that provides a reliable editing environment for music. The sequencer runs on Linux platform and provides an ideal environment for music composers, music students, musicians, and for small uses at home or other recording environments.

Rosegarden needs a hardware called MIDI synthesizer for synthesis process. MIDI synthesizer is a soft synthesizer like TiMidity++, or may be a synthesizer plugin. Recently released versions of Rosegarden cope well with DSSI audio synthesizer plugin.

Rosegarden provides all the editing tools that are needed to generate music with your own ideas. You can just drag the music signals with the mouse and align them to create "music segments" and can also double-click them to edit the segments. Editing windows like the matrix editor, event editor and notation editor ideally have the same interface, where you can select and drag music signals to move, squash and stretch. You can also enter notes with the help of a MIDI keyboard by real-time recording or by step-by-step process.

Features

MID/ audio recording and playback with JSCK and ALSA

Editors - Piano-roll, event list, score, track overview , matrix

Support for LADSPA plugin for audio effects

JACK transport support to help synchronization with other music software

Pattern segmenting through Triggered segments and performable ornaments

MIDI and Audio sound mixers

Sony ACID Pro

Sony ACID Pro is a pro-digital audio workstation used for editing, mixing, and composing music templates. The product was launched in the market in1988 and was initially called "ACID pH1". In the list of music composers, Acid Pro was the first one of its kind. It provides a very easy method for music related functions where one can just drag-and-drop a music file into an Acid track, and that track would automatically conform itself to the key and tempo of the music track, with no sonic erosion.

System Requirements

Platform - Microsoft Windows XP SP2 or later edition, Windows Vista, Windows 7

Processor-1.8 GHz (More is recommended for faster speed)

Minimum of 1 GB RAM (2.0 GB or more for faster work)

150 MB of free hard-disk space for installation

Sound card-Windows-compatible (ASIO driver)

Microsoft .NET Framework 3.0

Synthesis Process

Sony Acid Pro can record single or multiple tracks of MIDI and audio simultaneously. Just punch-in and punch-out on the track, and create sound effects. Sony ACID Pro can enhance playback operation on multiprocessor, just by following the rule “1-thread-1-process” for each processor. The mixing console provided with the software, furnishes an integrated view for all tracks. The MIDI and Audio mixing console helps to add an extra routing options, that allows a more efficient, reliable, and flexible recording environment. Features like per-track metering, enables quickly viewing and tweaking MIDI and audio mixed levels in real time environment. Metering can be done within the track for getting more precise mixing to get better sound mixing with raised accuracy.

Features

Control for external surface channel tracking

ASIO ports and devices

Mackie Control with Frontier Design

Optimized dynamic playback

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Multiple processor support

Live audio recording

Unlimited redo-undo history

Media Manager technology

GarageBand

GarageBand is an audio sequencer software application which allows users to edit, create, and mix music files. GarageBand is manufactured by Apple Inc. GarageBand is a music sequencer which can play and record multiple audio tracks simultaneously. Audio built-in filters provide the audio track an enhanced recording guitar tool.

System Requirements

Mac OS

867MHz (or more) processor

Dual-core (or more better) processor

512MB (More is recommended) of RAM

4GB of free hard-disk space

QuickTime version 7.5.5 or later

Synthesis Process

The process is simple and can be studied with the manual provided with the software. Beat ruler displays the beats and their measures. Use the beat ruler to prompt the playhead of the track to accurate beat position. Drag the loops to add tracks to them. Arrange the music composition by working the loops and the regions properly in tracks below the timeline.

Features

Audio Recording

Play multiple tracks of audio

Virtual software instruments

Imports MIDI files

Offers piano roll/notation-style editing

Can download pre-recorded music lessons

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