JikliMeter

A lightweight real-time audio analysis and visualization tool built from scratch with C++, WinAPI, WASAPI, and DirectX 11.

Unlike many audio visualizers that rely on large frameworks, JikliMeter focuses on low-level control, performance, and learning. The project demonstrates how modern audio capture, DSP processing, and GPU rendering can be implemented directly using native Windows APIs.

Features

Audio Capture

• WASAPI loopback capture
• Microphone input support
• Real-time device switching
• Support for multiple audio formats:
  • Float32
  • PCM16
  • PCM24
  • PCM32

DSP Processing

• Real-time FFT analysis
• Windowing functions
• Spectrum generation
• Peak level detection
• Stereo channel analysis

Visualizations

• Oscilloscope
• Frequency Spectrum
• Scrolling Spectrogram
• Stereo Meter
• Waveform Display
• Loudness Meter

Rendering

• Custom DirectX 11 renderer
• Hardware accelerated drawing
• Dynamic texture streaming
• Custom primitive rendering system
• High refresh rate rendering

User Interface

• Borderless custom window
• Runtime settings panel
• Device selection
• Visualization toggles
• Resizable interface