SlowPunch

SlowPunch is a standalone audio app designed for fast, creative impact and low-end enhancement. It allows you to:

• Adjust Playback Speed: Slow down or speed up audio with pitch following speed.
• Punch: Add rich, analogue-style impact and harmonic excitement to your sound with soft saturation.
• Bass: Boost your low-end to make kicks and sub-bass hits fuller, from clean to deep boom.

Beyond these sonic transformations, SlowPunch features high-resolution visual feedback including a real-time dual-layer spectrum analyzer (Dry/Wet FFT), allowing you to see the effect of Punch and Bass in real time. With easy drag-and-drop loading and WAV export, SlowPunch is designed for quick, fun, and impactful sound shaping, perfect for deep exploration and refinement of your audio.

"Fully coded DSP & GUI — no images, no SVGs, no skins. Pure signal."

Key Features

• Engine: Slow-Playback & Impact Enhancement Processor.

• Speed Control: Variable 0.5x to 1.5x playback rate for creative tempo shifts.

• Punch: Add rich, analogue-style saturation for dynamic impact.

• Bass: Boost low-end energy from subtle warmth to deep boom.

• Processing: Smooth real-time DSP with zero-latency architecture.

• Utility Controls: Bypass for instant A/B comparison.

• Analyzer: High-resolution dual-layer spectrum display (Dry/Wet FFT).

• FFT Engine: 4096 / 8192-point resolution with Blackman window.

• Response Model: Internal 4.5 dB tilt and 350 ms ballistic decay.

• Metering: Dual-layer LR Peak meters (background = input, top ticks = output).

• Stereo Tool: Correlation meter for phase monitoring.

• Output: Post Gain trim control, -12 dB to +12 dB.

• Playback: Drag & Drop loading with Loop functionality.

• Export: Render processed audio to WAV (16-bit or 24-bit) - Disabled at Free Version.

• Precision: 32-bit floating-point processing.

• Sample Rates: 44.1–96 kHz support.

Standalone Architecture

The standalone architecture enables instant loading, looping, and analysis of audio files without requiring a DAW. It's designed for fast, focused audio work—whether checking references, making precise adjustments, or performing detailed evaluations.

Version History

v1.1 - May 2026
• Optimized spectrum processing performance.
• Optimized peak meter performance.
• Minor UI refinements for improved visual consistency.

v1.0 – Initial Release
• First public release of SlowPunch.