Harmony Compiler

Harmony Compiler

Infobox Software
name = Harmony Compiler



caption = Manuscript, [ftp://publications.ai.mit.edu/ai-publications/pdf/AIM-107.pdf "Music Compiler"] (PDF)
author = Peter Samson
developer =
released = 1960, 2006
latest release version =
latest release date =
latest preview version =
latest preview date =
operating system =
platform = PDP-1
language =
genre = Music
license =
website = [http://www.computerhistory.org/pdp-1/ PDP-1 Restoration Project]

Harmony Compiler was written by Peter Samson at the Massachusetts Institute of Technology (MIT). The compiler was designed to encode music for the PDP-1 and built on an earlier program Samson wrote for the TX-0 computer.

Jack Dennis noticed and had mentioned to Samson that the sound "on" or "off" state of the TX-0's speaker could be enough to play music.gutenberg | no=729 | name=Hackers: Heroes of the Computer Revolution "by Steven Levy'. [http://www.gutenberg.org/catalog/world/readfile?pageno=24&fk_files=36095 p. 24] ] They succeeded in building a WYSIWYG program for one voice before or by 1960.cite web | title=MUSIC X |date=28 May 1960 | url=http://www.bitsavers.org/bits/MIT/tx-0/music/_text/musicx_eng.txt | accessdate=2006-07-05]

For the PDP-1 which arrived at MIT in September 1961, Samson designed the Harmony Compiler which synthesizes four voices from input in a text-based notation. Although it created music in many genres, it was optimized for baroque music. PDP-1 music is merged from four channels and played back in stereo. Notes are on pitch and each has an undertone. The music does not stop for errors. Mistakes are greeted with a message from the typewriter's red ribbon, "To err is human, to forgive divine."gutenberg|no=7409 | name=An Essay on Criticism "by Alexander Pope' [http://www.gutenberg.org/catalog/world/readfile?pageno=13&fk_files=21814 p. 13] ]

Samson joined the PDP-1 restoration projectcite journal | author=Cheponis, Mike | title=Restoring the DEC PDP-1 Computer | journal=Core | publisher=Computer History Museum |date=Spring 2006 | url=http://www.computerhistory.org/pdp-1/ | accessdate=2007-11-23] at the Computer History Museum in 2004 to recreate the music player.

References

*
* Samson's description begins at 1:20.

Notes


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Harmony Compiler — El Harmony Compiler (Compilador de Armonías) fue escrito por Peter Samson en el Instituto Tecnológico de Massachusetts (MIT). El compilador fue diseñado para codificar música para el PDP 1 y fue hecho sobre un programa anterior que Samson… …   Wikipedia Español

  • Apache Harmony — Infobox Software name = Apache Harmony caption = Demonstration of the Apache Harmony running Java 2D Demo collapsible = yes developer = Apache Software Foundation latest release version = 5.0 M7 latest release date = release date|2008|07|31… …   Wikipedia

  • GNU Compiler for Java — Developer(s) The GNU Project Stable release 4.6.1 / June 27, 2011; 4 months ago (2011 06 27 …   Wikipedia

  • GNU Compiler for Java — Тип Компилятор Разработчик Проект GNU Операционная …   Википедия

  • In Harmony — Infobox Album Name = In Harmony: A Sesame Street Record Type = compilation Artist = various artists Cover size = Caption = Released = October 1980 Recorded = Genre = Children s music Length = Label = Producer = Reviews = Compiler = Last album =… …   Wikipedia

  • New Harmony, Indiana —   Town   Location in the state of …   Wikipedia

  • Missouri Harmony — The Missouri Harmony, first published in 1820, was the most popular of all frontier shape note tune books during its reign. The 185 songs compiled in the collection were favorites used in Protestant churches and singing schools, and many were… …   Wikipedia

  • Peter Samson — Infobox Scientist name = Peter Samson image width = caption = birth date = 1941 birth place = Fitchburg, Massachusetts death date = death place = residence = field = computer science work institution = Autodesk, Computer History Museum, Digital… …   Wikipedia

  • Alan Kotok — Infobox Scientist name = Alan Kotok image width = 260px caption = Kotok speaking in Boston in 2004. Photo: Richard Ishida birth date = birth date|1941|11|9|df=y birth place = Philadelphia, Pennsylvania death date = death date and… …   Wikipedia

  • PDP-1 — at the Computer History Museum with Steve Russell, creator of Spacewar!. The large cabinet houses the processor itself. The main control panel is just above the desk, the paper tape reader is above it (metallic), and the output of the Teletype… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”