Mega Bass - Android Bass Guitar App

Guilherme Carneiro

Completed work

Android Developer

Android Studio

Other

Mega Bass - Android Bass Guitar App

About the Project

I developed Mega Bass, a bass guitar emulator for Android that integrates an audio engine with an interactive interface. Built with native technologies, it delivers realistic sound and responsive feedback for a natural playing experience.

Key Features

🎸 Complete bass neck interface with 22 frets

🎵 4 strings with distinct sounds (G, D, A, E) and different thickness

🎧 Audio engine integration:

High-quality sound samples

Multiple kit selection options

Low latency response

🎯 Visual feedback system:

String vibration animations

Touch effects with color variations

Visual positioning indicators

🔄 Neck navigation system:

Position control via slider

Dynamic fret scaling

Smooth position transitions

🎚️ Playback controls:

Sustain button for note duration control

Stop All function for immediate pause

Recording with background tracks

Audio mixing with FFmpeg

Technologies Used

Language: Kotlin with C++ audio processing

Custom Views:

Custom rendering and animation

Visual state management

Touch event handling

Architecture:

Native audio integration

State management

Thread-safe processing

Audio Processing:

C++ audio engine (Oboe)

Thread synchronization

WAV asset management

Animations:

Custom animations with ValueAnimator

String vibration modeling

Responsive visual effects

Technical Highlights

Integration between Java/Kotlin UI and C++ audio:

JNI bridge for cross-language communication

Memory management

Thread-safe audio processing

Touch handling system:

Multi-touch support

Simultaneous string detection

Position translation to notes

Kit management:

Dynamic sound loading

Web-based kit repository

Persistent preferences

Recording features:

Audio mixing with FFmpeg

Background track synchronization

Multiple export options

Challenges and Solutions

Audio Engine Integration

Integration with C++ audio engine

Thread synchronization for stability

JNI memory management

Touch Response Coordination

Mapping touch events to audio triggers

Synchronizing visuals with audio

Sustain mode management

Performance Optimization

Efficient sound loading

Optimized animations

Smooth kit switching

Project Structure

com.oliveiralabs.megabass/
├── activities/
│   ├── InstrumentActivity.java
│   └── BassInstrumentActivity.kt
├── audio/
│   └── InstrumentPlayer.java
├── bass/
│   ├── ui/
│   │   ├── components/
│   │   │   ├── neck/
│   │   │   └── string/
│   │   └── effects/
│   └── utils/
├── views/
│   └── MultitouchView.java
└── native/
    └── instrument.cpp

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Completed work

Posted Apr 4, 2025

A bass guitar emulator developed for Android, inspired by Real Bass. The project is an implementation that combines precise interactivity, realistic visual fee…

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