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.
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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