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MIDI MIDI (Audio)

File extension .midi
Category Audio File
Description The MIDI file was developed to allow both musicians and audio developers to transfer MIDI data from one software application to another. The MIDI file contains messages that specify notation, pitch, velocity and control signals for volume, vibrato, audio panning that synchronise tempo between multiple devices. Historically you would have needed four separate keyboard instruments, but now with MIDI files you can play multiple instruments from a single controller.
Actions
Technical Details MIDI messages are made up of 8-bit words that are transmitted serially at 31.25 kbaud. A MIDI link can carry sixteen independent channels of information, MIDI messages can be channel messages, which are sent on only one of the 16 channels and can be heard only by devices receiving on that channel, or system messages, which are heard by all devices. There are five types of message: Channel Voice, Channel Mode, System Common, System Real-Time, and System Exclusive. There are two variations of the Standard MIDI File format, called Type 0 and Type 1. Type 0 is a single track of data; Type 1 is multi-track.
Associated programs
  • Audio Evolution
  • GarageBand
  • Master Tracks Pro
  • Sonar
Developed by Various
MIME type
  • audio/midi
  • audio/x-midi
Useful links

WMA WMA (Audio)

File extension .wma
Category Audio File
Description Developed by the Signal Processing Group at Microsoft, the WMA file format is part of the Windows Media framework and was first released commercially in 1999, with support for playback of WMA encoded files as part of Windows Media Player. Creation of WMA files did not come until Windows Media Player version 7. The original codec was targeted as a direct competitor to the MP3 and RealAudio formats, and has achieved a broad level of adoption thanks to support for playback on numerous DVD players, Nokia mobile handsets and Playstation portable devices.
Actions
Technical Details In almost all circumstances WMA files are part of the Advanced Systems Format (ASF) container, a proprietary container format developed by Microsoft for both digital video and digital audio. Every WMA file contains an audio track encoded in one of four mutually distinct codecs - WMA, WMA Voice, WMA Lossless or WMA Pro - WMA is the most commonly found of the four, but is a lossy codec, with the ability to encode audio signals sampled at up to 48 kHz. WMA Pro is an improved version, allowing sampling up to 96 kHz, but has achieved little hardware and software support. WMA Lossless is designed to compress audio signals with no loss of quality from the original source (up to 96 kHz) and is used in some Windows Mobile devices as well as the Logitech Squeezebox Touch. Finally, WMA Voice is a lossy codec optimized for low-bandwith voice playback applications, with mono sampling support up to 22.05 kHz - it is perhaps most well known for being used by the BBC World service for streaming Internet radio.
Associated programs
  • Windows Media Player
  • VLC Media Player
  • MPlayer
  • Realplayer
  • Windows Movie Maker
Developed by Microsoft
MIME type
  • audio/x-ms-wma
Useful links

MIDI Convert MIDI file

Using Zamzar, it is possible to convert MIDI files to a variety of other formats

  • midi to aac (Advanced Audio Coding File)
  • midi to ac3 (AC3 Audio File)
  • midi to flac (Free Lossless Audio Codec)
  • midi to m4a (Compressed video file)
  • midi to m4r (iPhone Ringtone File)
  • midi to mp3 (Compressed audio file)
  • midi to mp4 (MPEG-4 Video File)
  • midi to ogg (Ogg Vorbis Compressed Audio File)
  • midi to wav (Windows audio file)
  • midi to wma (Windows Media Audio)

MIDI to WMA - Convert file now

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