17
ULTRA-Q PRO PEQ2200
7.2 Effects of equalization on music program
Center frequency (Hz)
1/3 octave
Effects on music
31 to 63
Fundamentals of bass drum, tuba, double bass and organ.
These frequencies give music a sense of power. If over-
emphasised they make the music "muddy". The 50 or
60 Hz band is also used to reject AC mains hum.
80 to 125
Fundamentals of lower tympani. Too much boost produces
excessive "boom". 100 or 125 Hz are also used for hum
rejection.
160 to 250
Drum
and
lower
bass.
Too much
boost produces
excessive "boom". Also useful for 3rd harmonic mains hum
rejection.
315 to 500
Fundamentals of strings and percussion.
630 to 1k
Fundamentals and harmonics of strings, keyboards and
percussion. Boosting the 600 to 1 kHz range can make
instruments sound horn-like.
1.25k to 4k
Drums, guitar, accentuation of vocals, strings and bass.
Too much boost in the 1 to 2 kHz range can make
instuments sound tinny. Too much boost anywhere
between 1 to 4 kHz can produce "listening fatigue".
5k to 8k
Accentuation of percussion, cymbals and snare drum.
Reduction at 5 kHz makes overall sound more distant and
transparent. Reduction of tape hiss and system noise. The
1.25 to 8 kHz governs clarity and definition.
10k to 16k
Cymbals and overall brightness. Too much boost causes
sibilance. Reduction of tape hiss and system noise.
Tab. 7.2: Effects of equalization on music reproduction
7. EQUALIZERS AS CREATIVE AUDIO TOOLS
