McLaren Labs brings MIDI and Musical applications to the Raspberry-Pi and Ubuntu computers. Our aim is to make music-creation more fun on inexpensive and small computers. Our apps are easy to use and also use the latest multicore technologies to provide high performance.
rtpmidi, lets you send MIDI messages over a computer network using WiFi or Ethernet. The
rtpmidi protocol is already build into Mac computers, so this utility makes it easy to network your musical Raspberry Pi with your Mac. It is also possible to use
rtpmidi with PCs and Android devices, because this protocol is available on those platforms too.
Network MIDI lets MIDI-enabled software communicate by sending packets over your network. Just as file sharing enables one computer to use the files on another, Network MIDI enables synth-sharing over a network. Use this when your synth computer is already hooked up to your audio system and you want to use a MIDI keyboard or controller that is on another computer.
Because Network MIDI is built into Mac OSX, you can use a Raspberry-Pi or Ubuntu Linux computer to send MIDI information to your Mac. This allows you to "play" Mac synths from your Pi. You can also use a cheap Linux computer to "bridge" USB-MIDI keyboards and controllers into your Ethernet network.
Why RFC-6295? RFC-6295 (alsa known as RTP-MIDI) is a special protocol for MIDI information. Other systems (like OSC, for one) use either UDP or TCP protocols directly. UDP packets have low latency, but their delivery is not guaranteed. TCP messages are guaranteed to be delivered, but system buffers can introduce unmanaged delay.
RTP-MIDI is built using UDP packets and introduces an error-correction algorithm. This algorithm detects when UDP packets have been dropped and recovers the information in a musically-friendly way. This means that if a Note-OFF packet is lost, that note will not stay "stuck on." The protocol will detect the missing Note-OFF and recover. This method gives the best experience for live performance.
rtpmidiyou can connect connect Synthesizers, Keyboards and other Controllers using Ethernet instead of old-fashioned MIDI cables.
rtpmidiprogram can be used as a Slave or a Master. As a Slave, it can accept incoming connections from other Network MIDI participants. As a Master, it can initiate connections to other Network MIDI participants.
Pi-Organ-Synth is an easy to use multitimbral synthesizer. It has a single oscillator and a single envelope generator. The oscillator can be run in Mono mode to generate pure-tone Sine, Saw, Triangle and Square waves. In Organ mode, a bank of oscillators are used to generate overtones above the harmonic. The collection of sliders sets the relative amplitude of each harmonic.
Pi-Organ-Synthon the Raspberry Pi 4.
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