X22

X22 or X-22 may refer to:

See also

Free music

Free music or libre music is music that, like free software, can freely be copied, distributed and modified for any purpose. Thus free music is either in the public domain or licensed under a free license by the artist or copyright holder themselves, often as a method of promotion. It does not mean that there should be no fee involved. The word free refers to freedom (as in free software), not to price.

The Free Music Philosophy generally encourages creators to free music using whatever language or methods they wish. A Free Music Public License (FMPL) is available for those who prefer a formal approach. Some free music is licensed under licenses that are intended for software (like the GPL) or other writings (the GFDL). But there are also licenses especially for music and other works of art, such as EFF's Open Audio License, LinuxTag's Open Music License, the Free Art license and some of the Creative Commons Licences.

History

Before the advent of copyright law in the early 18th century and its subsequent application to music compositions first, all music was "free" according to the definitions used in free software or free music, since there were no copyright restrictions. In practice however, music reproduction was generally restricted to live performances and the legalities of playing other people's music was unclear in most jurisdictions. Copyright laws changed this gradually so much so that in the late 20th century, copying a few words of a musical composition or a few seconds of a sound recording, the two forms of music copyright, could be considered criminal infringement.

Copyright

Copyright is a legal right created by the law of a country that grants the creator of an original work exclusive rights for its use and distribution. This is usually only for a limited time. The exclusive rights are not absolute but limited by limitations and exceptions to copyright law, including fair use.

Copyright is a form of intellectual property, applicable to certain forms of creative work. Under US copyright law, legal protection attaches only to fixed representations in a tangible medium. It is often shared among multiple authors, each of whom holds a set of rights to use or license the work, and who are commonly referred to as rightsholders. These rights frequently include reproduction, control over derivative works, distribution, public performance, and "moral rights" such as attribution.

Copyrights are considered territorial rights, which means that they do not extend beyond the territory of a specific jurisdiction. While many aspects of national copyright laws have been standardized through international copyright agreements, copyright laws vary by country.

Copyright law of the United States

The Copyright Law of the United States tries to encourage the creation of art and culture by rewarding authors and artists with a set of exclusive rights. Copyright law grants authors and artists the exclusive right to make and sell copies of their works, the right to create derivative works, and the right to perform or display their works publicly. These exclusive rights are subject to a time limit, and generally expire 70 years after the author's death.

United States copyright law is governed by the Copyright Act of 1976. The United States Constitution explicitly grants Congress the power to create copyright law under Article 1, Section 8, Clause 8, known as the Copyright Clause. Under the Copyright Clause, Congress has the power:

The United States Copyright Office handles copyright registration, recording of copyright transfers, and other administrative aspects of copyright law.

History

US copyright law traces its lineage back to the British Statute of Anne, which influenced the first US federal copyright law, the Copyright Act of 1790. The Copyright Act has been updated several times, including, notably, the Copyright Act of 1976.

Atari Video Music

The Atari Video Music (Model C240) is the earliest commercial electronic music visualizer released. It was manufactured by Atari, Inc., and released in 1976. The system creates an animated visual display that responds to musical input from a Hi-Fi stereo system for the visual entertainment of consumers.

Overview

By interpreting an input musical waveform, the Video Music translates the levels of musical intensity and mellowness into colors and shapes that are output to a graphical display. The console is attached to an audio source and then operated by an adhesive-backed switch box that is glued to the back of a television display. Audio signal visualizations take the basic form of a two-part diamond. The outer part represents the left audio channel while the right channel is represented by the inner part. Varying colors and shapes provide a wide variety of patters, designs, and images depending on the audio sample played.

After the unit is powered on, a toggle switch may be used to select between "TV" (music visualization inactive), and "Game" (music visualization active). When in the "Game" position, visual data is broadcast on VHF channel 3 by default, but may be set to channel 4. Unlike Atari's previous video game systems, the Video Music system's switch box featured a 75 Ohm pass-through F connector allowing the television antenna or cable to remain attached and thereby eliminating the tiresome process of detaching and reattaching the cable every time the user switched from watching normal television broadcasts to using the visualizer. Any audio source may be used for visualization including Atari's video game system audio, and visualizations can either be watched "live" on a television screen or recorded on a VCR by using a balun converter.