Raspberry Pi (Sound, MIDI)...

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The definitive guide to MIDI IN with Raspberry Pi's GPIO
http://www.samplerbox.org/article/midiinwithrpi

Raspberry Pi MIDI I/O
https://sites.google.com/site/scidiy/pc-diy/raspberry-pi-midi-i-o

MIDI breakout board for Raspberry Pi (v0.10)
This is a simple Serial based MIDI breakout board for the Raspberry Pi.
It uses the Raspberry Pi hardware UART RX and TX from its expansion port to provide a “MIDI In” and “MIDI Out” function.  ...
https://zuzebox.wordpress.com/2012/03/18/midi-breakout-board-for-raspberry-pi-v0-10/

https://zuzebox.files.wordpress.com/2012/03/rpi_midi_board_schematic-0v102.pdf

Miditech MIDIface 4x4 (Linux kompatibel)
http://www.thomann.de/de/miditech_midiface_4x4.htm

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A Python wrapper for the RtMidi C++ library written with Cython.
https://pypi.python.org/pypi/python-rtmidi/

Memo (01/2015)

python-rtmidi 0.5b1 auf dem Raspi installieren
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http://trac.chrisarndt.de/code/wiki/python-rtmidi

sudo apt-get install build-essential
sudo apt-get install libasound2-dev
sudo apt-get install librtmidi1
sudo apt-get install libjack-jackd2-dev
sudo pip install python-rtmidi

The RtMidi Tutorial
http://www.music.mcgill.ca/~gary/rtmidi/index.html

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pygame module for interacting with midi input and output.
http://www.pygame.org/docs/ref/midi.html

Raspberry Pi SPI and I2C Tutorial
https://learn.sparkfun.com/tutorials/raspberry-pi-spi-and-i2c-tutorial/all

Raspberry Pi: SPI-Schnittstelle
Der Raspberry Pi kann über den digitalen GPIO-Port nicht nur per I2C, UART oder bitweise kommunizieren, sondern hat auch eine SPI-Schnittstelle.
http://www.netzmafia.de/skripten/hardware/RasPi/RasPi_SPI.html

https://www.raspberrypi.org/documentation/hardware/raspberrypi/spi/README.md

Hier zeige ich, wie das SPI Interface des Raspberry Pi verwendet werden kann. Das SPI Interface stellt neben dem I2C Bus eine weitere Möglichkeit dar, zusätzliche Bausteine oder Mikrocontroller an den kleinen Computer anzuschließen.
https://www.kampis-elektroecke.de/raspberry-pi/raspberry-pi-spi/

Raspberry Pi – SPI und I2C aktivieren
http://raspberry.tips/faq/raspberry-pi-spi-und-i2c-aktivieren

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STICKY:I2C, SPI, I2S, LIRC, PPS, stopped working? Read this
https://www.raspberrypi.org/forums/viewtopic.php?t=97314

Die I²S-Schnittstelle (Inter-IC Sound Interface) wurde von Philips für serielle digitale Audiodaten bei der Kommunikation zwischen ICs entwickelt. Die Clock-Generierung kann nur von einem Bus-Teilnehmer oder Controller vorgenommen werden.
https://de.wikipedia.org/wiki/I%C2%B2S

How to: easy i2s audio with your Raspberry Pi
By pasdesignal On June 3, 2013 · 51 Comments
http://www.noiseisgood.co.nz/howto-easy-i2s-audio-with-your-raspberry-pi/

RS Audio Codec
http://mbed.org/cookbook/RS-Audio-Codec

SPI (Anbindung eines MCP4812)
Hier zeige ich, wie das SPI Interface des Raspberry Pi verwendet werden kann. Das SPI Interface stellt neben dem I2C Bus eine weitere Möglichkeit dar, zusätzliche Bausteine oder Mikrocontroller an den kleinen Computer anzuschließen. ...
https://www.kampis-elektroecke.de/raspberry-pi/raspberry-pi-spi/

SpiDev DocumentationThis  module defines  an  object  type  that  allows  SPI  transactionson  hosts  running  the  Linux kernel.  The  host  kernel  must  have  SPIsupport  and  SPI  device  interface  support. All  of  these can be either built-in to the kernel, or loaded frommodulesThis  module defines  an  object  type  that  allows  SPI  transactionson  hosts  running  the  Linux kernel.  The  host  kernel  must  have  SPIsupport  and  SPI  device  interface  support. All  of  these can be either built-in to the kernel, or loaded frommodules ...
http://tightdev.net/SpiDev_Doc.pdf

Raspberry Pi: SPI-Schnittstelle
http://www.netzmafia.de/skripten/hardware/RasPi/RasPi_SPI.html

Dac over raspberry pi spi troubleshooting (2018)
https://electronics.stackexchange.com/questions/373791/dac-over-raspberry-pi-spi-troubleshooting

https://www.wenzel-systems.de/30099_I2C_4Ch_DAC_16bit.html

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http://bitwizard.nl/shop/expansion-boards/DAC-with-MCP4726-MCP4822

This article aims to show a simple method of setting up the SPI interface on the Raspberry Pi Computer with python. The SPI interface is one of the busses made available on the 26 pin GPIO header of the Raspberry Pi.
http://www.100randomtasks.com/simple-spi-on-raspberry-pi

http://blog.koalo.de/2013/05/i2s-support-for-raspberry-pi.html

RS Audio Codec
http://mbed.org/cookbook/RS-Audio-Codec

http://www.ti.com/lit/ds/symlink/tlv320aic23b.pdf

PiMiDi: a Raspberry Pi Midi Box, or How I Learned to Stop Worrying and Love MIDI
https://www.instructables.com/id/PiMiDi-A-Raspberry-Pi-Midi-Box-or-How-I-Learned-to/

Review: Blokas PiSound, Audio & MIDI Interface For Raspberry Pi
Liam Lacey on Mar 15, 2017
https://ask.audio/articles/review-blokas-pisound-audio-midi-interface-for-raspberry-pi

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MIDI Controller on the RPi
http://m0xpd.blogspot.co.uk/2013/01/midi-controller-on-rpi.html


MIDI breakout board for Raspberry Pi (v0.10)
https://zuzebox.wordpress.com/2012/03/18/midi-breakout-board-for-raspberry-pi-v0-10/

I2C - BASIC SERIAL BUS REQUIREMENTS
https://www.sparkfun.com/datasheets/BreakoutBoards/I2SBUS.pdf

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Using the I2C Interface
http://www.raspberry-projects.com/pi/programming-in-python/i2c-programming-in-python/using-the-i2c-interface-2


#28 -- TWI (I2C)
https://www.youtube.com/watch?v=7yRoR7w82SA

Interfacing with SPI I2C
https://www.youtube.com/watch?v=pOgf9hMWu_g

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USB Sound Cards
https://elinux.org/RPi_VerifiedPeripherals#USB_Sound_Cards

Raspberry Pi – (USB) Soundkarte unter Raspbian einrichten
raspberry.tips 03.09.2017
http://raspberry.tips/raspberrypi-tutorials/raspberry-pi-usb-soundkarte-unter-raspbian-einrichten

USB Soundkarte auf dem Raspberry Pi 3 einrichten (2019)
https://schmidt-feldberg.de/usb-soundkarte-auf-dem-raspberry-pi-3-einrichten/

Using a USB Audio Device with the Raspberry Pi
https://www.raspberrypi-spy.co.uk/2019/06/using-a-usb-audio-device-with-the-raspberry-pi/

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Digitale Audiosignalverarbeitung auf dem Raspberry Pi (2016)
http://pub.dega-akustik.de/DAGA_2016/data/articles/000410.pdf

https://puredata.info/docs/raspberry-pi

Install Pure Data
http://pi.bek.no/pdInstall/

R Pi 3 - Pure Data
https://www.raspberrypi.org/forums/viewtopic.php?t=142307