MiniSynth

A real-time audio synthesizer built with SwiftUI and AVAudioEngine, showcasing professional-grade audio processing and intuitive user interface design.

Features

Audio Engine

• Real-time synthesis with sine, square, and sawtooth waveforms
• ADSR envelope for natural note articulation
• Low-pass filter with resonance control
• Reverb effect for spatial depth
• Zero-latency audio processing using AVAudioEngine

User Interface

• Braun-inspired design with custom knobs and sliders
• Interactive piano keyboard with haptic feedback
• Real-time parameter control with smooth audio updates
• Responsive SwiftUI layout for all device sizes

Technical Implementation

Audio Processing

Built on AVAudioEngine and Core Audio for minimal latency:

• Custom AVAudioSourceNode for real-time synthesis
• Audio graph: Synthesizer → Filter → Reverb → Output
• Thread-safe parameter updates
• Proper audio session management

UI Components

• Custom BraunKnob, BraunSlider, and BraunPicker with gesture-based control
• Smooth animations with Core Animation
• Haptic feedback integration

Requirements

• iOS 17.0+

Installation

1. Clone the repository
2. Open MiniSynth.xcodeproj
3. Build and run on device or simulator

Architecture

• Audio Thread: SynthAudioEngine → AVAudioSourceNode → Real-time Processing
• UI Thread: SwiftUI Views → Parameter Binding → Audio Engine Updates