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| EQ's Gain Control
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The equalizer boosts or reduces the level of any signal in a band of
frequencies. The gain control sets how much boost (positive numbers) or reduction
(negative numbers) is applied to the band. |
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| EQ's Q Control
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The Q control affects how many frequencies, around the center frequency
are also boosted (bandwidth). Q is the ratio of the number of frequencies similiarly
boosted (or reduced) compared to the center frequency in Hertz. Larger Q numbers
mean a narrower bandwidth is affected by the equalizer. A chart comparing bandwidth
to Q parameters is here. |
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| EQ's Frequency Control
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For peak response equalizers, the frequency control sets the center
frequency affected by the equalizer. For shelf-response equalizers, the frequency
control sets the corner frequency (the first frequency to be similarily boosted [or
reduced] as other frequencies in the band being affected.). |
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| High Pass Filter
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The High Pass Filter (HPF) removes any frequency below the corner
frequency.
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| Low Pass Filter |
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The Low Pass Filter (LPF) remves any signal that is above the corner
frequency. |
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| Notch Filter
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The notch filter removes a very narrow band of frequencies.
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| High Frequency Shelf |
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A High Frequency Shelf response boosts all frequencies evenly above a
certain threshhold. |
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| Low Frequency Shelf |
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A Low Frequency Shelf boosts all frequencies below a given point by the
same amount. |
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| Peak Response |
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A Peak response up boosts a given frequency a certain amount and
frequencies right above or right below it to a lesser amount. A Peak response down would
cut this frequency by a given amount and frequencies right above or right below it to a
lesser degree. |
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Bandwidth to "Q" Conversion
Chart |
Q = 1.0 = Bandwidth of 1 1/3 Octaves |
Q = 1.0 = Bandwidth of 1 1/3 Octaves |
Q = 0.5 = Bandwidth of 2 2/3 Octaves |
Q = 2.0 = Bandwidth of 2/3 Octaves |
Q = 0.25 = Bandwidth of 5 1/3 Octaves |
Q = 4.0 = Bandwidth of 1/3 Octaves |
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