Open Source Android Sound Synthesis Apps

Standing Wave 3 is an ActionScript 3 audio library that provides high-level control over the Flash Player’s SampleDataEvent API for streaming audio output. It builds on the foundation of Standing Wave 2 but has been extensively refactored, with its core sample storage and manipulation routines rewritten using Adobe Alchemy for significant performance improvements. Originally derived from the audio engine used in the Noteflight Score Editor, the library allows developers to combine and chain together audio sources, filters, and sequences to create dynamic, real-time sound experiences. Supported audio sources include MP3s, WAV files, and algorithmic generators, while filters enable effects such as echo, equalization, and envelope shaping. The system is flexible enough to handle complex timing sequences of audio, making it suitable for advanced audio applications or interactive projects.

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.

Just download the above zip file, extract it and then open the respective index.html file on your favourite internet browser and follow the instructions shown.

The project is divided into two main sections: a metronome and a click track generator. The metronome is intended as a practice aid for musicians. It loops a single bar of click track that is specified by the user. The user can select the time signature, beat division, beat grouping, bar emphasis and beat emphasis. The click track generator is intended as a song practice aid for single musicians or an entire band. Just like when recording int the studio, it provides a constant benchmark for the tempo. Both the metronome and click track are generated dynamically and played using the build in audio libraries of android. This provides a highly precise click.

HBX Binaural Player is free and open source brainwave entrainment application. It's made using libBinaural ( https://sourceforge.net/projects/libbinaural/ ); it's easy to use and it's entirely written in java for maximum portability. It includes English and Italian localizations and an example preset. More presets can be found here: http://hbxplayer.sf.net/file_list.php ******** EDITOR TUTORIAL ******** English: http://youtu.be/ndVw9yrgTGE Italian: http://youtu.be/ezDrfqFYKMg This is free software under the GPL License agreement. For any additional question, bug report, feature requests, etc., feel free to contact me at dossenus91@gmail.com

Transform pure innocent audio files, speech, music, etc into unholy demonic abominations. Audio Satanifier 666 is a fun easy-to-use browser-based tool forged in the pits of hell, for voice actors, musicians, sound designers, for memes, for creative projects or anyone else who want to twist their sound into something absolutely diabolical! Layperson friendly - you'll be able to apply cool effects to your audio file even if you know nothing about audio engineering. Theres also a Mini version that has a voice deepening that doesn't slow the speed of the audio. Its more focused on the "satan voice" filter, while the larger default version has 16 different filters you can mix and match. (Source code is included within the html file itself.)

Etheric Synthesizer (EtherSynth) is a theremin-like synthesizer application for Android platform, which allow you to play otherworldly melody by swiping finger on the screen. Though It does not closely imitate a real theremin as Etheric Synthesizer uses only one finger to play. It currently supports monophonic note playing with configurable waveform, frequency scale, control area, and control orientation. Basic recording function is also included (WAVE format). Etheric Synthesizer works on Android version 2.0 and above.

LibBWEntrainment is a Free and Open Source Brainwave Entrainment Library for Java. *** It is not a standalone application. *** The library is very flexible, allowing different types of renderers (isochronic, binaural, ...) as well as multiple output devices (speakers, file, socket or even screen), and it can easily be ported to other languages because it doesn't use any proprietary Java feature. Current features: -Javadoc and examples -Extremely lightweight, yet flexible -Easy to use -XML Presets -Multiple Entrainment Tracks -Looping -Isochronic rendering -Output to PC and Android -Output to MP3/FLAC/Wav file -Output to raw Stream Compared to my old LibBinaural, this is twice as fast and much more flexible. A project using this library is available here https://sourceforge.net/projects/isochronic/.

SINE Isochronic Entrainer is a Free and Open Source Brainwave Entrainment application for PC, Android, and HTML5. Brainwave Entrainment is the practice of using sounds, visual stimuli or even electromagnetic fields to alter the frequency of brainwaves. It can be done for several reasons: people with insomnia can take great benefit from it, but it can also be used to improve your attention span, and even simulate the effects of some recreational drugs. The effect is not permanent, and fades away in less than a minute after the stimuli is removed. Isochronic tones are a commonly used aural stimuli for Brainwave Entrainment, consisting of short pulses of a sine wave, varying in frequency. Unlike binaural beats, isochronic tones can be played on speakers. The Player supports touchscreens and high resolution displays. Includes a graphical editor for making presets, with a manual.

StringTuner is an app that plays the notes of a stringed instrument, such as a guitar, to aid in tuning the instrument. Intended for Android.

A unique desktop music composing application for PC/Mac/Linux/Android with a tracker style interface and a simple modular Java plugin based design allowing rapid improvement and endless expansion.