Band-Pass Filter

A bandpass filter, also known as BPF, is a type of filter circuit that unlike low pass and high pass filters passes frequencies within a certain range and attenuates frequencies outside that range. Bandpass is an adjective that describes a type of filter or filtering...

Comb Filter

Summing two signals   Comb filtering occurs when two audio signals are summed together with the difference in very small delay between them. This effect tends to happen a lot when two or more microphones are picking up the same audio signal. They then summit...

Formant Filter

 Speech Synthesis   In speech synthesis, formant filters are often used to simulate formant filtering by the vocal tract. Passing a “buzz source” through only two or three formant filters simulate different vowel speech sounds. As a result, speech is fully...

Low Pass Filter

What is a Low Pass Filter   A low pass filter, known as LPF, is essentially a filter that reduces or eliminates the frequencies above the cutoff frequency. It passes low-frequency signals and blocks or impedes, high-frequency signals. In audio applications, this...