Dfplayer mini で作る800円サンプラーモジュラーシンセ｜HAGIWO/ハギヲ｜note. Arduinoプログラミングに挑戦しつつ、dfplayer miniでモジュラーシンセサイザーのサンプラーモジュールを自作したので、その備忘録。
背景コードの書けないシステムエンジニア脱却のために始めたプログラミングの4作品目。 新しい部品、新しい関数を使えるネタを探していた。 先日robaux LL8という8chのゲートシーケンサーを入手したのだが、「8個も音源リソースねえよ」という事で、安価なドラム音源を欲していた。 そんな思惑が交錯して、安価なサンプラーを作るに至った。 制作物のスペックユーロラック規格 3U 6HPサイズ電源：73mA ( at 5V ) / 65mA ( at12V )チャンネル：2ch (同時出力不可）レイテンシ制御：0ms～900msサンプル数：計50sample ( 10sanple * 5bank )ストレージ：micro SD音源：mp3ファイル（44.1kHz 24bit）総額：800円 EQは5種類から選択可能。 DFPlayer miniについて秋月で1000円で購入可能。 SDカードに保存したmp3ファイルを再生できる。 80msはドラム音源としては辛いが、対策としてモジュール側にレイテンシコントロールを実装。 プログラム自作モジュラーシンセはプログラミングの勉強が目的なので、毎回新しい要素を織り込もうと意識している。 ロータリーエンコーダの制御は、Encoder.hのライブラリを使用した。 モジュールの起動時に、前回の設定値を読み込めるよう、EEPROMへのデータ保存も実装した。 INPUT_PULLUPを使用することで、digitalRead端子のプルダウン抵抗と制限抵抗の削減をした。 ハードウェア回路はいたってシンプル。 当初はarduino pro miniを使用する予定だったが、aliexpressで購入したチャイナ互換品が粗末な出来であった。 海外フォーラムに同様の指摘をする指摘は複数あり。 ソースコード粗末ではあるが公開する。 Ornament & crime. ElectroTechnique. Audio System Design Tool for Teensy Audio Library. @lonershy. Clonewheel Organ.
A clonewheel organ is an electronic musical instrument that emulates (or "clones") the sound of the electromechanical tonewheel-based organs formerly manufactured by Hammond from the 1930s to the 1970s.
Clonewheel organs generate sounds using solid-state circuitry or computer chips, rather than with heavy mechanical tonewheels, making clonewheel organs much lighter-weight and smaller than vintage Hammonds, and easier to transport to live performances and recording sessions. The phrase "clonewheel" is a play on words in reference to how the original Hammond produces sound through "tonewheels". The first generation of clonewheel organs used synthesizer voices, which were not able to accurately reproduce the Hammond sound.
In the 1990s and 2000s, clonewheel organs began using digitally-sampled real Hammond sounds or digital signal processing emulation techniques, which were much better able to capture the nuances of the vintage Hammond sound. Projects – Father & Sonthesizer. The Beatsqueezer. Bwhitman/alles: A many speaker distributed music synthesizer using UDP multicast over WiFi, modeled after the alles machine/AMY. Bwhitman/alles: A many speaker distributed music synthesizer using UDP multicast over WiFi, modeled after the alles machine/AMY. Sine generator using stm32f407 internal DAC and PCM5102A – Stupid Projects. Intro Welcome to another completely stupid project!
This time I’ll show you how to implement a sine generator using a dirt cheap stm32f407 board. It really doesn’t make any sense to just build a sine generator, especially that way and using an STM32 processor, but it’s fun and at some point later I’ll post a project with the making of a more useful DDS (direct digital synthesizer). As usual let’s see the components and their prices. Components. HackerBox 0028: JamBox : 9 Steps - Instructables.
The ESP32 is a single chip computer.
It is highly integrated featuring 2.4 GHz Wi-Fi and Bluetooth. The ESP32 integrates the antenna switch, RF balun, power amplifier, low noise receive amplifier, filters, and power management modules. DIY Synth PCB's. Mutable Instruments. Firmware hacking Braids’ source code is available under the MIT licence.
The code (along with the hardware description files) can be found in the braids directory in our Eurorack modules git repository. After having cloned the repository, don’t forget to run git submodule init && git submodule update to make sure the sub-projects referenced in the code are also pulled. Playground A simple way of testing the oscillators code locally on a desktop computer, without long flash/test cycles, is to use the command line program in braids/test. MBHP_CORE_STM32F4 Module. Click here to display the navigation bar MBHP_CORE_STM32F4 is the successor of the MBHP_CORE_STM32 module, and an alternative solution to the MBHP_CORE_LPC17 module.
Main features of the STM32F407G-DISC1 based MBHP_CORE_STM32F4 module: 1MB Flash and 192k RAM (significantly more than previous core modules) The STM32F407G-DISC1 evaluation board is available for 15 EUR at Mouser, 17 EUR at Watterott (Germany), 11 GBP at Farnell (GB) - an meanwhile even at Amazon! It will be attached on the MBHP_CORE_STM32F4 PCB, but can also be used standalone for mini applications which only require USB MIDI and a small number of IOs or the Audio DAC. Ok, enough praises for this nice toy. ADCs cannot be supplied at 5V, 3.3V is the limit, and the STM32F407G-DISC1 board uses an even lower voltage (3V). However, although some of these limitations are really annoying, the STM32F4 based solution is currently the best choice for future MIDIbox projects. Installing the MIOS32 Bootloader. Build a Microcontroller C.V./Trig Thing Workshop - Tech - lines.
There seems to be interest over in the Serge thread in folks building the small microcontroller c.v. and trigger unit I made this month: \4 control voltages out, 0 ~ +8V, ~2kHz max bandwidth4 trigger outs, 0 ~ 8VBased on a Feather M0 boardOptional displayProgrammable in C++ or Circuit PythonI made it for Serge, but could easily be adapted for Eurorack.
Eurorack Modular Synth. Home of The Awesome Gecho Loopsynth. GaryA/Dekrispator_v2 at note_on_note_off. Daisy Seed — Electro-Smith. MrBlueXav/Dekrispator_v2: New Experimental Music synthesizer based on an STM32F4 Discovery board (ARM Cortex M4F from STM32 series) with USB MIDI Host function for interaction and automatic mode. Updated with Cube/HAL. STM32F4-Discovery MIDI input and basic synthesis – mind-dump.net. After the flurry of activities in recent weeks on a previous post (thanks guys!)
I finally went back and worked on the synth project some more. Some time ago I had already created a simple MIDI input and output circuit on a stripboard that the Discovery board could sit on. This would allow me to play notes or adjust parameters from any standard MIDI controller or the PC. The hardware setup for this was quite simple using a 6N137 optocoupler, which gets its 5V supply voltage directly from the 5V rail of the Discovery board. Since the output of the optocoupler is just an open drain, I didn’t even have to worry about any level shifting and directly connected it to the USART2 RX input on pin PA3, which I configured with an internal pull-up. The serial module setup again was very simple thanks to the Standard Peripheral Library: configure the pin(s), turn on the peripheral clock, create the init structure with the appropriate settings, initialize, done!
STM32 DAC Tutorial - Example HAL Code & Analog Signal Genreation. In this tutorial, we’ll discuss the STM32 DAC (Digital-To-Analog Converter) module.
Starting with an introduction for the DAC as a digital circuit and then shifting the attention to the STM32 DAC hardware and its features. We’ll get into the functional description for the DAC in STM32 microcontrollers, how it works, and how to configure it and make the best use of it. And let’s get right into it! Required Components For Those LABs All the example code/LABs/projects in the course are going to be done using those boards below. -AudioWeaver: Audio Development Tool. Earlier this year, we introduced ST-AudioWeaver, an advanced and free audio development tool in partnership with DSP Concepts.
The incredibly useful ST-AudioWeaver makes audio development even easier on STM32 products and will significantly reduce development time and cost. ST-AudioWeaver is a Graphical UI tool that helps developers create audio features by dragging and dropping DSP modules and configuring them in a design sheet. You don’t have to know the details of programming a DSP in assembly or “C” code to create compelling audio features.
STM32F4, and STM32F7, and STM32H7 series MCUs offer signal processing capabilities close to what standard DSPs can achieve; and this comes with lower run and stop power consumption and richer connectivity allowing developers to combine audio processing, rich connectivity, and real-time control in a single-chip solution. DIY & Modular Synth Onlineshop - Exploding Shed. Bela Blog. Ghostintranslation (Ghost In Translation) Ghost In Translation. RETURN OF THE SYNTH – GmanModz. About a year ago I started on my analog polysynth project. I made progress with the initial analog sound engine design but then pushed the project on the back burner.
I’m back in the groove now after gaining some more experience with microcontrollers this past year. I’m tempted to use PIC32 for the project since I am most comfortable with it, however I will use the opportunity to learn a new 32bit platform: STM32. It’s probably for the best not to use PIC32 for this project because PIC32 communication peripherals silicon errata notoriously do not always function at higher speeds.
I have chosen an STM32F446 as the voice card mcu mostly because it has two SAI modules (Serial Audio Interface) which are capable of outputting 4 I2S TDM streams (Inter-IC Sound Time Division Multiplexing) for the possibility of 32 24bit DAC channels. An 8 channel I2S 24bit DAC is chosen for high number of outputs, high precision, and competitive price of $3.02 per IC. What will the voice card do? Flash Synth - mitxela.com. 18 Oct 2019Progress: Complete A tiny, powered-by-MIDI, polyphonic FM synthesizer that supports full resolution pitchbend and microtonal tunings.
This project was built as a commission for Aaron Andrew Hunt. A production run is under way and the finished units will be sold on his site, H-Pi Instruments. Video The first half of the video is a demonstration of the synth, with the rest being a technical explanation. Axoloti. How to use the WaveDAC with PSoC 5LP. Attiny Pocket Sequencer : 8 Steps (with Pictures) - Instructables. For simplicity, the schematic can be broken down into four parts: (I have attached pictures of each of the following) 1.
Voltage Regulator 2. Switches and Potentiometers. Technoblogy - Waveform Generation using an ATtiny85. 5th October 2014 This article describes how to generate different waveform shapes using Direct Digital Synthesis or DDS on an ATtiny85. This program forms the basis for a simple synthesiser that I plan to describe in a later article. STUFF - LOOK MUM NO COMPUTER. When i started out i never knew what type of resistors or caps or whatever to get, i have since worked out they make fuck all difference, in a circuit that is down to no accuracy and more taste, you can use anything with the right (or even a bit wrong) values!
Just mess around, maybe youll find a better sound anyway! For instance the 200k and 100k resistors, if you lower one of them a bit the gain will go up! The 220k will adjust the gain of the first gain stage, and the 100k will adjust the second. SYNTH. NucleoSynth - Audio Synthesizer based on STM32 Nucleo-F446. Erica-synths (Erica Synths) / Repositories. Kevin's Blog. MiniMO – The mini modular synth. PER FORMER eurorack sequencer. PER|FORMER is a eurorack sequencer module designed for both live performance and work in the studio. It is based on the concept of step sequencing and can generate a wide variety of rhythms, melodies and modulation signals. While offering a vast amount of programming options, strong focus is put on having performance critical features available as directly as possible.
External MIDI controllers can be used for live recording and to control many parameters of the sequencing engine. Alternatively you can directly connect a Novation Launchpad™ to control many aspects of the sequencer. A highly configurable clock system allows the module to act both as a master clock or sync to many other modules or external gear. Low Cost DDS Function Generator for Makers. Polyphonic piano basic demo using KIT-059 and M... Kejran/PSoC-synth: A simple implementation of DDS-based musical synthesizer. Soundtronics. The 3HP Paperface Euro Modules. XFM2 — futur3soundz. FPGA power-upStepping up from the Xilinx Spartan-6 used in XFM, XFM2 is based on the Xilinx Artix-7 35T FPGA chip. With almost four times the capacity, of the previous one, this new chip offers plenty of space for a more complex build. Witches Brew stick CV Joystick Module V.1'ish - DIY STUFF - Look Mum No Computer Thingies.
Playground - ArduinoSynth. ATtiny85 Synth from Jan Ostman. PaulForgey/spinSynth: experimental FM synth project using Parallax Propeller microcontroller. PropSyntD. Hallo an alle Musikbegeisterten Elektronikern. Nano SwinSIDb tutorial. BLE Synth with the Feather nRF52840 and Circuit Playground Bluefruit. Audio Synthesis via Vacuum Tubes. Korg Volca Hack Points and Videos – Computo.
Audio synthesis via vacuum tubes - Synth DIY Wiki. Curtis CEM3320 IC – Reissued VCF Chip – Thonk – DIY Synthesizer Kits & Components. Awwbees/BespokeSynth: Software modular synth. SDIY.org - Sometimes making music requires a soldering iron. Synth DIY Wiki. Pusherman – PCBs and Panels for Eurorack DIY Synth Builders.
Modular Synthesizer Front Panels. Fixed price. Fast delivery. Synth and Stompbox DIY. The FPGASID Project. Blog – DSP Synthesizers – Code And Ideas For DIY Synthesizers. Fabien-Chouteau/noise-nugget: Square Inch Synthesizer. The Covenant: Atmospheric sound generator drone synth delay machine - gearnews.com. Embedded. Electronic Music Projects. VCV - Audible Instruments. Daisy Seed — Electro-Smith. Projects for STM chips - Technology / DSP, embedded systems, circuit design - Mutable Instruments' community. Midi (5 Channel CV – Midi converter) 10hp aluminum panel & 2 x pcb set – Pusherman.
DIGITAL PROTOBOARD EURORACK. Timsavage/hello-poly: MIDI to Polyphonic CV module based around the STM32 32bit Arm microcontroller. Cutlasses » DIY Devices. MidiSeq sequencer. PSoC Developer PSoC Developer. A Raspberry Pi SID Player. 3D printing – Synthtopia. Weekend Watch: Wintergatan's Wonderful Works. Theremin made with Cypress PSoC. Can You Make a Synth with an Arduino? SwinSID - Hardware replacement for SID 6581 8580 chip. Fluxamasynth.