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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 31.5Hz 33Hz
35Hz 37Hz 40Hz 42Hz 44Hz
47Hz 50Hz 53Hz 56Hz 60Hz
63Hz 67Hz 71Hz 75Hz 80Hz
85Hz 90Hz 95Hz 100Hz 106Hz
112Hz 120Hz 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!

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Higher Sample Rates (up to 192 kHz)


For the curious mind...