Ultrasonic + Haptics Device Test
(18–22 kHz)

Speaker/microphone test at 18–22 kHz + vibration test.
⚠️ High frequencies may be audible to children/animals. Start with low volume.

1) Ultrasound Generator (Speaker)

Ultrasound Volume
0.08
Tip: 0.05–0.10 is usually enough.
Output: stopped

2) Vibration (Modes)

Checking Vibration API support and providing an Audio Rumble alternative.

Vibration API (Real Vibration Motor) …
On iPhone (iOS Safari/Chrome) it usually doesn't work — Apple doesn't implement navigator.vibrate().
Audio Rumble (Through Speaker) works on iPhone too
Rumble Strength
0.12
This may be audible (low frequency). Place your phone on a table for better 'feel'.

3) Analyzer (Microphone + Frequency Purity)

Level Threshold (0–255)
50
Purity Threshold (%)
55
Reception: stopped
Waiting…
Purity is the proportion of energy in a narrow band around the frequency compared to the nearby environment. If 20–22 kHz are poor — most often this is due to speaker/microphone/noise suppression limitations.

My chat

Any questions?

Quantity: no more than 5 Size: no more than 15 MB Images: PNG (.png), JPEG / JPG (.jpeg, .jpg), GIF (.gif), WEBP (.webp), BMP (.bmp), TIFF (.tiff, .tif), HEIC / HEIF Documents: TXT (.txt), LOG (.log)