reflex-aec

Frequency-domain acoustic echo cancellation · Zero dependencies · Safari iOS ready

Status

AEC

Microphone

Bot speaking

System audio ref

BG guard

A/B Compare: Click to bypass — hear the raw echo, then click again to restore AEC

How to test: turn up your speakers, click Play Test Tone. The mic picks up the echo — watch the red line spike in the history graph while the blue line stays low.

Level Meters

Mic input (echo present)

— dB

AEC output (echo removed)

— dB

Echo reduction

— dB

Frequency Spectrum (log scale, 20Hz–8kHz)

Mic input (echo present)

AEC output (cleaned)

Cancelled frequencies

Echo Cancellation — Live History (5s)

Mic input (echo present)

AEC output (cleaned)

Echo reduction area

Current Frame

Microphone input (raw)

AEC output (cleaned)

Parameters (live)

alpha — H(f) smoothing

0.92

beta — spectral floor

0.02

mu — NLMS step size

0.10

ratioMax — BG guard

5.0

Status

Level Meters

Frequency Spectrum (log scale, 20Hz–8kHz)

Echo Cancellation — Live History (5s)

Current Frame

Parameters (live)

Event Log