Category Archives: Open Source

SpectrumViewer ~ Windows Continuous Spectrum Display

Posted by tom2tec on

Display of audio spectrum from PC input or wave file.

Reads audio from Windows audio interface or wave file and creates a continuous spectrum display. Command line support for generating sine, square, triangle and sawtooth wave files. Uses biquad IIR digital filters for frequency detection, plus digital lowpass filters for smoothing. Highly configurable. 60+ FPS with suitable hardware. Manual or automatic gain control.

Features:

  • Continuous display update
  • Single function, easy to learn
  • Zoom in on small frequency or dB range
  • Resizable main window and repartitionable panes
  • Crosshair cursor when Ctrl is pressed
  • Single, stand-alone exe file, no install/uninstall
  • Builds with Visual Studio 2019 or 2022
  • Bit-perfect sine wave generation for all sample sizes

sourceforge.net/projects/spectrumviewer-for-windows

TagLib ~ Audio Metadata Library

Posted by tom2tec on

TagLib is a library for reading and editing the meta-data of several popular audio formats. Currently it supports both ID3v1 and ID3v2 for MP3 files, Ogg Vorbis comments and ID3 tags and Vorbis comments in FLAC, MPC, Speex, WavPack, TrueAudio, WAV, AIFF, MP4 and ASF files.

taglib.org

SuperCollider ~ Audio Synthesis & Composition

Posted by tom2tec on

SuperCollider is a platform for audio synthesis and algorithmic composition, used by musicians, artists, and researchers working with sound. It consists of:

  • scsynth, a real-time audio server with hundreds of unit generators (“UGens”) for audio analysis, synthesis, and processing
  • supernova, an alternative server to scsynth with support for parallel DSP on multi-core processors
  • sclang, an interpreted programming language that controls the servers
  • scide, an editing environment for sclang with an integrated help system

sclang comes with its own package manager, called Quarks. scsynth and supernova both support third-party plugins via C and C++ APIs.

github.com/supercollider/supercollider
github.com/supercollider
supercollider.github.io
en.wikipedia.org/wiki/SuperCollider
soundcloud.com/tags/supercollider
www.linux-magazine.com/Online/Features/Sculpting-Sound-with-SuperCollider

traKmeter ~ Loudness Meter Plugin

Posted by tom2tec on

Loudness meter for correctly setting up tracking and mixing levels (gain staging).

github.com/mzuther/traKmeter

AudioKit ~ Mac Open Source Audio Platform

Posted by tom2tec on

AudioKit is an audio synthesis, processing, and analysis platform for iOS, macOS (including Catalyst), and tvOS.

github.com/AudioKit/AudioKit
www.audiokit.io

Drum Count ~ Measure Drumset Strokes

Posted by tom2tec on

Drum Count is a simple tool which analyzes sound in real-time to measure the number of strokes played on a drumset.

sourceforge.net/projects/drumcount

Playrec ~ Multi-channel Matlab Audio

Posted by tom2tec on

Playrec is a Matlab and Octave utility (MEX file) that provides simple yet versatile access to soundcards using PortAudio, a free, open-source audio I/O library. It can be used on different platforms (Windows, Macintosh, Unix) and access the soundcard via different host API including ASIO, WMME and DirectSound under Windows.

www.playrec.co.uk

ChordPro ~ Create Lead Sheets

Posted by tom2tec on

In 1992 Martin Leclerc and Mario Dorion developed a simple text file format to write lead sheets, songs with lyrics and chords, and a tool to create neatly printed lead sheets out of these text files. The tool was called chord, and the text files were called chord files. It soon became a popular way to write lead sheets and many users and tools adopted this format for similar purposes. For still unknown reasons people started calling the files chordpro files.

www.chordpro.org/chordpro

The ChordPro (also known as Chord) is an ASCII text file format for transcribing songs with chords and lyrics. The format was originally used for guitar, but is used for variety of other string instruments, such as ukulele, bass guitar or mandolin. Although this format is legible as it is, there are many popular programs for displaying, transposing and printing. Files in this format often have extensions such as .crd, .chopro, .pro, .chordpro or .cho.

en.wikipedia.org/wiki/ChordPro

Downloads ~ github.com/ChordPro/chordpro/releases

Related:

Chordii ~ www.vromans.org/johan/projects/Chordii/intro

byzorgan ~ Specialized sound synthesizer with Byzantine Church music scales

Posted by tom2tec on

This software integrates a small specialized synthesizer and vocal processor. It can be used to learn Byzantine Church singing. You can play from the keyboard, mouse or touch screen. MIDI input is also available. Voice functions include: pitch highlighting, synthesizer control by voice, pitch correction and voice-to-ison conversion.


On the screen there are labels with symbols of Byzantine notes. There is a metronome. The program is oriented on the Chrysanthos tuning of the diatonic scale: 9/8 – 12/11 – 88/81. The octave is divided into 17 (or 19) non-equal parts, it allows you to get all the Byzantine modes.

Features:

  • No installation required
  • Metronome
  • Different channels for melos and isokratima
  • MIDI input
  • 17 (or 19) non-equal steps per octave: same tuning for all scales
  • Voice functions: highlight key, synthesizer control by voice, pitch correction, voice-to-ison conversion
  • Record audio
  • Training mode
  • Cross-platform: may be compiled on any platform, supported by Qt 4.x or 5.x
https://sourceforge.net/projects/byzorgan/

LameVST ~ Preview Lossy mp3 Compression

Posted by tom2tec on

MP3 as VST-effect.

Ideal solution, if you need to preview you track in the mp3-mode during playback.

https://github.com/Iunusov/LameVST

Stereo to 7.1 Converter

Posted by tom2tec on

This program will convert just two channels to full 7.1 covered surround scene. Real psychoacoustics on the fly. Absolutely new technology by phase interference and partial time shifting. Source channels dividing to fifty virtual channels to make their magic and combine to 7.1

You have to use “Equalizer APO” as the engine.

https://sourceforge.net/projects/stereo-to-7-1-converter/

wavtoac3encoder ~ WAV To AC3 Encoder

Posted by tom2tec on

WAV to AC3 Encoder an audio encoder which generates compressed audio streams based on ATSC A/52 specification

wieslawsoltes.github.io/wavtoac3encoder/