A simple hardware synthesizer for the Teensy 4 with Audio Shield.
The vision is to abstract most of the boilerplate code and focus on minimalistic and easy to understand DSP implementations.
The current state of this project is experimental. So don't expect a fully working synth, but rather ideas where to start.
You need to have Teensyduino installed.
wget https://downloads.arduino.cc/arduino-1.8.13-linux64.tar.xz
wget https://www.pjrc.com/teensy/td_153/TeensyduinoInstall.linux64
wget https://www.pjrc.com/teensy/49-teensy.rules
sudo cp 49-teensy.rules /etc/udev/rules.d/
tar -xf arduino-1.8.13-linux64.tar.xz
chmod 755 TeensyduinoInstall.linux64
./TeensyduinoInstall.linux64 --dir=arduino-1.8.13
Clone the repository and its submodules
git clone --recurse-submodules https://github.com/krenzlin/teensy-synth
Point ARDUINOPATH in teensy4.mk to your Teensyduino installation.
Run make build to compile and make upload to flash your connected Teensy.
All source code is in src (implementations and headers), third party libraries in libs and tests and stuff in tests.
teensy4.mk is the Makefile for building and uploading this project to the Teensy 4.0 and is called from the main Makefile.
Change paths and flags to your needs, esp. the ARDUINOPATH to the Teensyduino installation.
TARGET = synth # name of hex file and where it will be stored
SRCDIR = src # directory of your source files
BUILDDIR = build # where to put object files
LOCALLIBDIR = libs # directory with local libraries, e.g. via git submodules or just copied
ARDUINOPATH = arduino-1.8.13 # path to the teensyduino installation
ARDUINOLIBS = SD SPI SerialFlash Wire # which Arduino libs to compile
Run make test to execute the test suite.
This repository has a set of benchmarks to compare DSP implementations.
make bench
make check runs cppcheck on all source files.
Please feel free to open up an issue or pull request.
As this project is still in exploration phase it has no versioning besides the git commits.
In the future SemVer might be used.
This project is licensed under the MIT License - see the LICENSE file for details
- doctest
- picobench
- Teensy Audio Library
- ADSR implementation by earlevel.com
- Arduino MIDI Library by FortySevenEffects