Fundamentals - Genelec 6010A Setup Manual

Fundamentals.

Basics of sound
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Fundamentals
Sound travels approximately 340 m/s. It takes 3 ms
to travel 1 meter.
Ideally the sound volume drops by
6 dB when the distance doubles.
1 m 100 dB 0 dB
2 m 94 dB -6 dB
4 m 88 dB -12 dB
Industry standard SPL for cinema mixing work is
85 dB at the listening position.
Common definitions of Frequency spectra:
Subsonic frequencies
Very low frequencies
Low frequencies
Middle low
frequencies
Middle frequencies
Middle high
frequencies
High frequencies
Very high frequencies
20 30 40 50 60 70 80 90
Monitor setup guide
Sound volume increases 3 dB
when the power doubles.
100 W 85 dB
200 W 88 dB +3 dB
400 W 91 dB +6 dB
1 Hz - 20 Hz Not audible to
humans.
20 Hz - 40 Hz Lowest audible
octave to humans.
40 Hz - 160 Hz Music low
frequencies, here are
the kick drum, bass
and low register of
grand piano.
160 Hz – 400 Hz Middle C of piano is
here.
400 Hz - 2.5 kHz Low-order harmonics
of most instruments.
2.5 kHz - 5 kHz Ear most sensitive to
this range. Presence,
voice frequencies are
here.
5 kHz - 10 kHz Brightness and
harmonics are here.
10 kHz - 20 kHz Highest harmonics
are here.
100 200 300 400 500
Useful low frequency spectrum extension
0 dB
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