From the course: Audio Foundations: EQ and Filters

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High- and low-pass filters

High- and low-pass filters

From the course: Audio Foundations: EQ and Filters

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High- and low-pass filters

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We know that shelving filters boost or cut energy at the target frequency and all audio frequencies either above or below it. A pass filter also affects all energy above or below the target frequency, often referred to as the cutoff frequency in a pass filter. However, instead of boosting or cutting that content by a specific amount of gain, it instead removes that frequency content completely. Any frequency content outside the cutoff frequency is attenuated or cut gradually in a downward slope, heading towards negative infinity. Let's listen to some audio examples. Listen to the following drum loop with a high-pass filter engaged. (music playing) Next, let's listen to the loop with a low-pass filter engaged. (music playing) Like the name suggests, a high-pass filter allows the highs to pass through the filter unaffected, while the low frequencies are attenuated, or removed, starting at the cutoff frequency and lower. Likewise, a low-pass filter allows the lows to pass through the…

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