: It could be a set of calibration tones used to test the "low-frequency" response of subwoofers or architectural spaces.
Because this exact file name is not a standard industry benchmark, you should exercise caution before opening it: Hearing at low and infrasonic frequencies - PubMed low-frequency-10.7z
: Sound designers often share archives of low-frequency "thumps," "rumbles," or sine wave sweeps for music production. The "10" may refer to 10 Hz , a frequency in the infrasonic range that is felt as vibration rather than heard as pitch. : It could be a set of calibration