A high pass filter (HPF) is a filter that tempers all the frequencies that are below the certain cutoff frequency and allows the frequencies that are above to pass. This filter can appear at many stages of the signal path. Such states are the microphone, the amplifier, the equalizer, or the plugin, for example. In…
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In essence, a low pass filter, also known as LPF, is a filter that lessens or eradicates all the frequencies that are higher than the cutoff frequency. People also know it as a high-cut filter or treble-cut filter. Regardless of the name, it works by passing the low-frequency signals and blocking the high-frequency ones. Low…
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A comb filter is an effect that occurs when you join two different audio signals together with a tiny delay between them. Funny story: the term originated because its magnitude response looks like the teeth of a comb. It is very common when microphones pick up the same audio signal and end at the same…
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The term Band-Pass Filter (BPF) describes the filtering process. BPF refers to a type of filter circuit that passes frequencies within a specific range. In addition, it weakens signals that fall out of that range. In relation to this, a bandpass signal is a one that involves a band of frequencies not joined to a…
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In a shelving equalizer, all frequencies are boosted or cut by the same amount. But, to understand this, let’s first get back to basics. One describes equalizers in reference to a flat response curve. This means that a system or a piece of equipment responds evenly to all frequencies within a specific range. The range…
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A dynamic equalizer is a type of conventional parametric equalizer. It is dynamic because the static gain of the filter is exchanged by a dynamic control loop, while the frequency and quality (Q) remain the same. This equalizer can have level-dependent parameters or temporal ones. Examples of level-dependent parameters are over/under and threshold and range,…
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Pseudo-stereo audio processing techniques produce a wider special impression while generating an illusion of multi-directional audible perspective. For this reason, these techniques create two stereo channels from a single one. For this reason, people also call it simulated stereo. In addition to what we just described, you can use pseudo-stereo as an audio manipulation tool…
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Linear phase equalizers have the most transparent sounding types of equalization. However, before delving into how they operate, we must understand its physics—which is where the name comes from. A linear phase is a property of a filter where the phase response of the filter is a linear function of frequency. As a result, the…
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