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  • This module is included inLens: Digital Signal Processing with NI LabVIEW and the National Instruments Platform
    By: Sam ShearmanAs a part of collection:"Musical Signal Processing with LabVIEW (All Modules)"

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    "This online course covers signal processing concepts using music and audio to keep the subject relevant and interesting. Written by Prof. Ed Doering from the Rose-Hulman Institute of Technology, […]"

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Useful MIDI Software Utilities

Module by: Ed Doering

Summary: Freeware MIDI-related software utilities abound on the Internet; some of my favorites are described in detail here. Each section includes a screencast video to illustrate how to use the utility.

mf2t / t2mf

Standard MIDI files are binary files, and therefore cannot by read using a standard text editor. Piet van Oostrum has developed a companion pair of console applications called mf2t (MIDI File to Text) and t2mf (Text to MIDI File) that translate back and forth between the standard MIDI file and a human-readable version. You can more easily study the text-version MIDI file to see the messages, meta-events, and timing information. Also, you can edit the text-version, and then convert it back to the standard binary format.
Available at http://www.midiox.com (scroll towards bottom of the page).
midi_software-mf2t.html
Figure 1: [video] Tour of the mf2t / t2mf MIDI-to-text conversion utilties

XVI32

Created by Christian Maas, XVI32 is an excellent binary file editor (or “hex editor”) when you need to view a standard MIDI file directly. XVI32 can also modify the file by tweaking individual byte values, or by inserting and deleting ranges of values. The editor also includes tools to interpret data values, i.e., select and range of 8 bytes and interpret as an IEEE double-precision floating point value.
midi_software-xvi32.html
Figure 2: [video] Tour of the XVI32 hex editor for viewing standard MIDI files

MIDI-OX

MIDI-OX is a wonderful utility developed Jamie O'Connell and Jerry Jorgenrud. MIDI-OX serves as a MIDI protocol analyzer by displaying MIDI data streams in real-time. MIDI-OX can also filter MIDI streams (remove selected message types) and map MIDI streams (change selected message types according to some rule). MIDI-OX includes other useful features: you can use your computer’s keyboard to generate note events (you can even hold down multiple keys to play chords!), you can play standard MIDI files (.mid files), and you can capture a MIDI data stream and save it to a file.
In order to make full use of MIDI-OX, you will also want to install the MIDI-Yoke driver. MIDI-Yoke works like a virtual MIDI patch bay, a device that connects MIDI inputs and outputs together. For example, you can connect the output of a MIDI sequencer application to MIDI-OX to view the MIDI messages, and then send the message to the MIDI synthesizer on your soundcard. When you have many MIDI-capable devices connected to your computer, MIDI-OX and MIDI-Yoke make it easy to quickly re-configure the virtual connections without changing any external cables.
midi_software-midiox.html
Figure 3: [video] Tour of the MIDI-OX utility

JAZZ++

JAZZ++ is a MIDI sequencer created by Andreas Voss and Per Sigmond. JAZZ++ serves as a multi-track recorder and editor for MIDI-capable instruments, and also supports audio tracks. A musician can create a composition with full instrumentation by recording tracks one at a time. Performances such as a piano solo recorded by the sequencer can easily be edited to correct any mistakes. JAZZ++ is also a great way to graphically visualize the contents of a standard MIDI file.
midi_software-jazz.html
Figure 4: [video] Tour of the JAZZ++ MIDI sequencer application

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