sightread ~ Learn To Play Piano

Posted by tom2tec on

A free and open-source webapp for learning to play Piano. Play music without needing to learn sheet music. Plug in your MIDI keyboard for the optimal experience.

sightread.dev
github.com/sightread/sightread

Librempeg ~ Multimedia Libraries & Toolsets

Posted by tom2tec on

Librempeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries:

  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides means to alter decoded audio and video through a directed graph of connected filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libswresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools:

  • ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
  • ffplay is a minimalistic multimedia player.
  • ffprobe is a simple analysis tool to inspect multimedia content.
  • Additional small tools such as aviocat, ismindex and qt-faststart.

github.com/librempeg

Q17 ~ QUAD 405 MOSFET Amplifier

Posted by tom2tec on

Q17 is an amplifier based on the QUAD 405 current dumping principle.

Please refer to Q17 Project description from Tiberiu Vicol’s original design.

Q17-Turbo project (200W @ 8 Ohms):

The natural evolution of the Q17-Mini, this time with two pairs of power transistors, better thermal management with the same technical characteristics and the same sound signature.

Q17 PCB

github.com/stefaweb/Q17-Amplifier

CamillaDSP ~ IIR & FIR Engine For Crossovers & Room Correction

Posted by tom2tec on

A tool to create audio processing pipelines for applications such as active crossovers or room correction. It is written in Rust to benefit from the safety and elegant handling of threading that this language provides. Supported platforms: Linux, macOS, Windows.

Audio data is captured from a capture device and sent to a playback device. Alsa, PulseAudio, Jack, Wasapi and CoreAudio are currently supported for both capture and playback.

The processing pipeline consists of any number of filters and mixers. Mixers are used to route audio between channels and to change the number of channels in the stream. Filters can be both IIR and FIR. IIR filters are implemented as biquads, while FIR use convolution via FFT/IFFT. A filter can be applied to any number of channels. All processing is done in chunks of a fixed number of samples. A small number of samples gives a small in-out latency while a larger number is required for long FIR filters. The full configuration is given in a YAML file.

henquist.github.io
github.com/HEnquist/camilladsp

The Raspberry Jam ~ Raspberry Pi Guitar Effects Pedal

Posted by tom2tec on

The realtime Raspberry PI powered digital guitar effects pedal.

Key Features:

  • Realtime audio loop
  • Cutsomisable effects
  • User profiles
  • Low cost
  • Simple effect creation
  • Specialized audio electronics design
github.com/Jscott44/RTEP5-the-raspberry-jam

Phoniebox ~ RPi-Jukebox-RFID

Posted by tom2tec on

Phoniebox is a contactless jukebox for the Raspberry Pi, playing audio files, playlists, podcasts, web streams and Spotify triggered by RFID cards. All plug and play via USB, no soldering iron needed. It also features GPIO buttons control support.

github.com/MiczFlor/RPi-Jukebox-RFID

SOX-DSD ~ SoX With DSD For Windows.

Posted by tom2tec on

Here located unofficial builds of the SoX (Sound eXchange) audio tool with DSD support and other patches (including both DSF & DFF I/O and SDM sox “effect” to convert from PCM to DSD) for OS Windows only. Provided two Windows executable files for 32 & 64 bit systems. Binaries were cross-compiled on Linux using MinGW/gcc on fully static way.

  •  DSF I/O
  •  DFF I/O
  •  SDM effect to convert from PCM to DSD
github.com/turbulentie/sox-dsd-win

Polyphone ~ Cross-platform Soundfont Editor

Posted by tom2tec on

Polyphone is an open-source soundfont editor for creating musical instruments, available for Windows, Mac OS X and Linux.

Features:

  • editing of sf2, sf3, sfz and sfArk file formats
  • compatible with jack and asio audio servers
  • built-in synthesizer, controlled by a virtual keyboard or midi signals
  • automatic recognition of root keys
  • automatic loop of samples
  • simultaneous editing of parameters
  • specific tools for musical instrument creation
  • recorder to keep a trace of what is played in a .wav file
  • soundfont browser connected to the online repository
github.com/davy7125/polyphone