Behringer Ultra-Pro PEQ2200 User Manual page 16

7.1 Effects of equalization on voice program
Center frequency (Hz)
1/3 octave
40 to 125
160 to 250
315 to 500
630 to 1k
1.25k to 4k
5k to 8k
10k to 16k
Sense of power in some outstanding bass singers.
Voice fundamentals.
Important for voice quality.
Important for voice naturalness. Too much boost in the 315 to 1 kHz
range produces a telephone-like quality.
Voice fricatives-accentuation of vocals. Important to speech
intelligibility. Too much boost between 2 and 4 kHz can mask certain
speech sounds e.g. "m", "b", and "v" can become indistinguishable.
Too much boost anywhere between 1 and 4 kHz can produce
"listening fatigue". Vocals can be highlighted by slightly boosting the
vocal at 3 kHz and at the same time slightly dipping the instruments
at the same frequency.
Accentuation of voice. The range from 1.25 to 8 kHz governs the
clarity of voice.
Too much boost causes sibilance.
Tab. 7.1: Effects of equalization on voice reproduction
Effect on voice