hear everything,
at any volume

Real-time psychoacoustic audio processing that restores what your ears miss at low volume. Based on patent EP4035264.

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Patent EP40352645M+ DownloadsGrammy-Endorsed

5M+

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EP4035264

European Patent

At low volume, your ears drop the bass

These are the Fletcher-Munson equal-loudness contours. Each curve represents the SPL needed at every frequency for your ear to perceive the same loudness. At low volume, you need dramatically more energy in the bass and treble just to hear them.

The shaded region shows the gap between what you hear at low volume (20 phon) and loud volume (80 phon). OIKLA fills that gap in real time.

How It Works

Analyze

Real-time FFT analysis measures the spectral energy of your audio across 32 psychoacoustic bands.

Compensate

Per-frequency gains are computed from equal-loudness lookup tables, correcting for your ear's reduced sensitivity at the current volume.

Apply

A minimum-phase impulse response is generated and applied via zero-latency convolution. Your audio sounds full at any volume.

Built for How You Actually Hear

Real-Time Processing

Continuous loudness compensation with under 3ms latency. No buffering, no delay.

Per-Frequency Correction

32 psychoacoustic bands individually compensated based on Fletcher-Munson curves.

Continuous Calibration

Adapts in real-time as your listening level changes. No manual adjustment needed.

True Stereo

Independent left/right channel processing preserves spatial imaging and stereo width.

Science-Backed

Built on ISO 226 equal-loudness contours. Protected by European patent EP4035264.

Your Target Level

Set the perceived loudness you want. OIKLA compensates to match that experience.

Hear the Difference

Without OIKLAWith OIKLA

At low volume, your ears lose sensitivity to bass and treble. The outer frequencies fade away, leaving a thin, mid-heavy sound.

“SHAPE is the first plugin that truly understands how we hear. It's changed the way I mix at every volume level.”

Ricky Damian

Grammy Award Winner

Adele | Mark Ronson | Lady Gaga

Choose Your Experience

Free

Perception

Browser Audio Processor

Real-time processing
No installation
System audio capture
WASM-powered

Pro

SHAPE

DAW Plugin

$19.99$69

AAX / VST3 / AU
Per-channel processing
Studio integration
30-day free trial

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Frequently Asked Questions

OIKLA applies real-time psychoacoustic compensation to audio, restoring the bass and treble detail your ears naturally lose at lower listening volumes. Based on the Fletcher-Munson equal-loudness contours and protected by patent EP4035264.

A static EQ applies the same boost regardless of volume. OIKLA dynamically adjusts per-frequency compensation based on your actual listening level, matching the non-linear sensitivity curves of human hearing. The correction changes continuously as volume changes.

Yes. Perception captures system audio or microphone input in your browser — music, movies, calls, games. SHAPE works as a plugin inside any DAW (Pro Tools, Logic, Ableton, etc.).

Yes, Perception is completely free to use in your browser. No account needed, no data collected, all processing happens locally on your device using WebAssembly.

Under 3 milliseconds. The DSP engine uses WASM SIMD with non-uniform partitioned convolution, running entirely in an AudioWorklet. No perceptible delay.

Chrome and Edge (Chromium-based browsers) with full support. Firefox and Safari have partial support. WASM SIMD and AudioWorklet are required.

SHAPE is a professional DAW plugin (AAX/VST3/AU) for mixing engineers. It includes studio-grade features like per-channel processing, sidechain input, and integrates directly into your mix workflow. Perception is a free browser tool for everyday listening.

No. All audio processing happens 100% locally in your browser or DAW. No audio data is transmitted, stored, or analyzed on any server. Your audio never leaves your device.

hear everything,at any volume