Turbosounds

Turbosounds is an iPhone/iPad app primarily for accordion musicians. Use it as a sound expander app so you can play many sampled instruments with your accordion connected via MIDI. The accordion requires to have a MIDI system installed.

This app was developed entirely by me for a customer. Please do not contact me for app support or legal issues.

Official Turbosounds website

Features

• More than 60 instruments to play, including accordions, harmonicas, guitars, brass, strings, bass, baritones, and more
• Support for many MIDI systems: Limex, Blueline, HDS, Totter, generic MIDI, and others
• Unique guitarist function to support your accompaniment on the bass side
• MIDI file player, can play MIDI files, Yamaha styles, and audio files as backing tracks
• Import your own MIDI or audio files
• Transposition and duet modes for treble side
• Mixer for advanced audio routing, and audio inputs support
• Use external AUv3 effects
• MIDI controller management for your foot switches

Software development info

• Languages: Swift, C/C++, ObjC
• User interface: UIKit
• Other frameworks: CoreMIDI, CoreAudio, AVFoundation
• Includes AUv3 extension
• Custom MIDI sequencer for MIDI file and style playback
• Custom audio engine within AVAudioEngine
• Real-time code in audio unit render callbacks
• Vocalist audio unit
• Atomics, condition variables
• 5 languages
• Developed since 2016 and still being updated