What is sequencer? - Definition from WhatIs.com
Part of the Multimedia and graphics glossary:

In digital audio recording, a sequencer is a program in a computer or stand-alone keyboard unit that puts together a sound sequence from a series (or sequence) of Musical Instrument Digital Interface ( MIDI ) events (operations). The MIDI sequencer allows the user to record and edit a musical performance without using an audio-based input source. The performance is recorded as a series of events that would ordinarily be played in from a keyboard instrument. The MIDI sequencer does not record the actual audio, but rather the events related to the performance - what note was played at what time, how hard the key was pressed, when did the sustain pedal get depressed, and so forth. This data is then played back into a MIDI instrument or sound module. Using this method, the performer can select a piano sound for a musical passage and later decide that the passage would work better as an organ sound. The editor can simply change the sound program on the MIDI keyboard to alter the sound without needing to rerecord the entire performance.

Using sound modules and keyboards that can respond on different MIDI channels, the player can layer the sounds of different instruments to create the illusion of an entire band or orchestra. There is sequencing software available in a range from that which would suit a beginner all the way to the most advanced film composer.

This was last updated in April 2005
Posted by: Margaret Rouse

Related Terms


  • golden ratio (golden mean)

    - The golden ratio is a proportion (roughly 1:1.6) that occurs frequently throughout the natural world and is broadly applied across many areas of human endeavor including engineering, architecture, ... (WhatIs.com)

  • dronie

    - A dronie is a self-portrait photograph (selfie) still or, more commonly, video recorded by a camera attached to a personal drone. (WhatIs.com)

  • Cartesian coordinates (rectangular coordinates)

    - Cartesian coordinates, also called rectangular coordinates, provide a method of rendering graphs and indicating the positions of points on a two-dimensional (2D) surface or in three-dimensional (3D... (WhatIs.com)


  • Multimedia and graphics

    - Terms related to multimedia, including graphics, animation and video definitions and words and phrases about images and sound.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question. Find an Answer.Powered by ITKnowledgeExchange.com

Ask An IT Question

Get answers from your peers on your most technical challenges

Ask Question

Tech TalkComment



    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.