rt_pvc ~ Realtime Phase Vocoder


rt_pvc is a:

  • real-time phase vocoder library for synthesis/analysis
  • vocoder application that allows the user to do time-expansion, frequency expansion, and cross-synthesis in real-time, from mic-input or from file.
  • real-time phase vocoder visualization
  • learning tool that teaches about the phase vocoder and its implementation
  • open source!

soundlab.cs.princeton.edu/software/rt_pvc
aur.archlinux.org/packages/rt_pvc

rt_lpc ~ Realtime Linear Predictive Coding


rt_lpc is a light-weight application that performs real-time LPC analysis and synthesis. It features the following:

  • real-time LPC analysis
  • real-time LPC synthesis
  • visualization of original, predicted, and error waveforms
  • visualization of vocal tract shape from LPC coefficients
  • adjustable LPC analysis order
  • adjustable synthesis pitch shift
  • MIDI controlled pitch (hit ‘m’)
  • lots of other choices (pitch pulse source selection, emphasis filter)
  • STFT plot
  • modular LPC library
  • available on MacOS X, Linux, and Windows under GPL
  • part of the sndtools distribution

soundlab.cs.princeton.edu/software/rt_lpc/
en.wikipedia.org/wiki/Linear_predictive_coding
github.com/lewark/lpc.lv2

sndpeek ~ Realtime Audio Visualizer


sndpeek is just what it sounds (and looks) like:

  • real-time 3D animated display/playback
  • can use mic-input or wav/aiff/snd/raw/mat file (with playback)
  • time-domain waveform
  • FFT magnitude spectrum
  • 3D waterfall plot
  • lissajous! (interchannel correlation)
  • rotatable and scalable display
  • freeze frame! (for didactic purposes)
  • real-time spectral feature extraction (centroid, rms, flux, rolloff)
  • available on MacOS X, Linux, and Windows under GPL
  • part of the sndtools distribution.

www.gewang.com/software/sndpeek
soundlab.cs.princeton.edu/software/sndpeek
www.cs.princeton.edu/sound/software/sndpeek/look

audioMotion ~ Player & Realtime Spectrum Analyzer


audioMotion is a media player and high-resolution real-time audio spectrum analyzer that allows you to SEE your music! ♪♫🤩

It is completely free, open-source software, created out of my passion for the graphic spectrum analyzers of hi-fi systems from the 1980s.

Features:

Dual channel high-resolution real-time audio spectrum analyzer

  • Media player with subtitles support for audio and video files
  • Fullscreen and Picture-In-Picture display at 60fps, ready for Retina / HiDPI screens
  • Logarithmic, linear and perceptual (Bark and Mel) frequency scales, with customizable range
  • Visualization of discrete FFT frequencies or up to 240 frequency bands (supports ANSI and equal-tempered octave bands)
  • Decibel and linear amplitude scales, with customizable sensitivity
  • Optional A, B, C, D and ITU-R 468 weighting filters
  • Optional effects: vintage LEDs, variable opacity, mirroring and reflection, radial spectrum
  • 17 beautiful color gradients, plus a visual editor to easily create your own gradients
  • Support for M3U playlists (.m3u and .m3u8 file extensions)
  • Visualize audio from your microphone (or “stereo mix”, if your soundcard supports it)

audiomotion.app
github.com/hvianna/audioMotion.js

Cava ~ Cross-platform Audio Visualizer


Cava is a bar spectrum audio visualizer for terminal or desktop (SDL).

Cava works on:

  • Linux
  • FreeBSD
  • macOS
  • Windows

This program is not intended for scientific use. It’s written to look responsive and aesthetic when used to visualize music.

github.com/karlstav/cava
Cavalier ~ Visualize Audio With CAVA

Audio Share ~ Share Audio To Android


Audio Share can share a Windows or Linux computer’s audio to an Android device over a network, so your phone becomes the speaker of the computer. 

github.com/mkckr0/audio-share
sourceforge.net/projects/audio-share

FRKB ~ Rapid Audio Organization Tool


FRKB is a cross-platform desktop application designed for audio professionals (such as DJs). The current beta version is compatible with Windows and will be adapted for macOS once stable. It is still under active development.

Core Features:

  • Portable: Easily transfer the database to mobile devices for on-the-go use.
  • Audio Fingerprint Deduplication: Identify and exclude duplicate tracks using audio fingerprint technology, providing prompts during import to keep your music collection clean and efficient.
  • Ergonomic Shortcuts: Ergonomically designed shortcuts that allow most operations to be performed with the left hand, making the organization process smoother and more efficient.
  • Direct File Management: When adding tracks, FRKB directly manages the audio files themselves, ensuring that the organization results are immediately reflected in the computer’s folders, achieving a “what you see is what you get” effect.
  • Waveform Visualization: Provides audio waveform display.
  • BPM Analysis: Displays BPM information.

github.com/coderDJing/FRKB_Rapid-Audio-Organization-Tool

Power Tab Editor ~ Guitar Tablature Editor


Power Tab Editor 2.0 – A powerful cross platform guitar tablature viewer and editor inspired by the ceased development and missing source code from the original Power Tab Editor. This project is open-source and written from scratch so that your favorite tabbing platform can continuously grow with your needs.

Key Features:

  • Cross platform – Windows, Mac, & Linux
  • Tabbed layout for opening multiple files at the same time
  • Mixer interface for adjusting volumes during playback
  • Complete customization of keyboard shortcuts
  • Importing of Guitar Pro tabs

github.com/powertab/powertabeditor

CamillaDSP ~ IIR & FIR Engine For Crossovers & Room Correction


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

Polyphone ~ Cross-platform Soundfont Editor


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
www.polyphone.io
github.com/davy7125/polyphone
community.linuxmint.com/software/view/polyphone

MusicSync ~ Synchronize Music Libraries


MusicSync is a cross-platform tool that synchronizes your music library between devices and drives with advanced settings.

You can use it through CLI, that makes easy to sync you library with only a click using a script, or through GUI, that is more user-friendly. Here there are two examples:

python musicsync D:/Music sdcard/Music --adb --min-rating 4.5 --output-format opus --output-bitrate 128k
python musicsync D:/Music sdcard/Music --adb --min-rating 3 --min-year 2020 --output-format opus --output-bitrate

github.com/serpest/MusicSync
hydrogenaud.io/index.php?topic=121169.0

Spotube ~ Open Source Spotify Client


An open source, cross-platform Spotify client compatible across multiple platforms utilizing Spotify’s data API and YouTube, Piped.video or JioSaavn as an audio source, eliminating the need for Spotify Premium.

  • 🚫 No ads, thanks to the use of public & free Spotify and YT Music APIs¹
  • ⬇️ Freely downloadable tracks
  • 🖥️ 📱 Cross-platform support
  • 🪶 Small size & less data usage
  • 🕵️ Anonymous/guest login
  • 🕒 Time synced lyrics
  • ✋ No telemetry, diagnostics or user data collection
  • 🚀 Native performance
  • 📖 Open source/libre software
  • 🔉 Playback control is done locally, not on the server
spotube.krtirtho.dev