Periodic masking mode ready

Online Tone Generator

This browser-based generator uses audible carriers, 12 Hz amplitude modulation, and dual-tone beating to explore masking around a repeating low-frequency disturbance. Because your speakers only cover roughly 60 Hz to 10 kHz, it cannot produce a true 12 Hz room-cancellation wave.

Playback Mode

Waveform

Carrier Frequency

180 Hz

Second Frequency

192 Hz

Volume

Modulation / Beat Rate

12.0 Hz

Modulation Depth

65%

Sweep Span

180 Hz

Auto-stop timer (minutes)

Quick presets

Target pattern

12.0 Hz

Carrier window

180 / 192

Audio status

Stopped

What this can do

The theory notes in this folder emphasize periodic behavior and compressing it into a repeatable descriptor. Applied here, the generator focuses on a repeating 12 Hz pattern by using audible tones that speakers can actually reproduce.

`12 Hz amplitude modulation` pulses one audible carrier 12 times per second.
`Dual-tone beat` plays two audible tones separated by 12 Hz.
`Room sweep` searches for audible bands that may mask the nuisance more effectively in your space.

Limits and safety

True acoustic cancellation requires matching the actual unwanted wave at the same low frequency, level, and phase at the listening position. With 60 Hz minimum output, this page is a masking tool, not a guaranteed 12 Hz remover.

Start at low volume and raise slowly.
Square and sawtooth waves can sound much harsher than sine.
If you want physical room cancellation, you need hardware that can reproduce sub-20 Hz frequencies.