Sine Burst Tones (20-200 Hz)


Sine bursts are repeated sinusoidal patterns, characterized by a sharp attack and decay. In a correctly damped room, these bursts will remain detailed and well separated independently from their frequency.


Similarly to the swept sine test, our next files can be used to determine resonant frequencies in your room. Resonance modes not only produce an uneven frequency response but also affect decay times. When a sound hits a resonance, the room will still resonate at that frequency after the initial sound disappeared. Decay times at those frequencies are thus longer than normal.

The sound files

20Hz 21Hz 22Hz 23.5Hz 25Hz
26.5Hz 28Hz 30Hz 47Hz 44Hz
42Hz 40Hz 37Hz 35Hz 33Hz
31.5Hz 50Hz 53Hz 56Hz 60Hz
63Hz 67Hz 71Hz 75Hz 120Hz
112Hz 106Hz 100Hz 95Hz 90Hz
85Hz 80Hz 126Hz 134Hz 142Hz
150Hz 160Hz 170Hz 185Hz 200Hz

Play back these files one by one. When you hit a room mode, the loudness will change and decay times will increase, resulting in a loss of clarity and definition.

If you hear any distortion, noises or rattling, check your loudspeaker first, then look for some object resonating in your listening room.

Files below 40 Hz will require fairly large subwoofers in order to play correctly!

Help Me Help You!

Is AudioCheck free? Not for me. Your support keeps this site running and growing without ads. Every donation gets rewarded with an access to • uncompressed .wav files downloads, for every test • sample rates up to 192 kHz, in the tone generator section • a suggestion box, on every page • no ads, never.

PayPal - The safer, easier way to pay online!
EU ← living in the EU?

If you already are a patron, please log in.

Ads will disappear with 3 visitors contributing today. Still missing 3...


Higher Sample Rates (up to 192 kHz)


For the curious mind...