An electronic circuit that reduces a narrow range of frequencies. A notch filter is a type of bandstop filter. For example, in a musical instrument amplifier, a notch filter may reduce the frequencies ...

Figure 1a shows the textbook method of achieving a notch filter by simply taking the difference of lowpass- and highpass-filter outputs. However, a real notch need not actually use a highpass filter.

Active notch filters have been used in the past for applications like elimination of 50- and 60-Hz hum components. They have proven to be somewhat problematic from the standpoints of center frequency ...

Notch filters are commonly called suppression filters, band-stop filters, etc. The characteristic of this filter is that it can pass most wavelengths with almost no loss, and the specified band (stop ...

An apodized discrete layer thickness design method for notch filters is presented. The method produces error tolerant designs with low ripple in the pass band regions ...

The Model S2065 notch filter targets noise-reduction applications in the television broadcast band (channels 62 to 68). Its specifications make it an excellent choice for solving difficult ...

Fig 1. Shown is the original Hall network in its simplest representation. R1 and R2 are located at the left and right of the potentiometer. Fig 2. Although the overall frequency response for the Hall ...

It’s been a while since the last installment in our Know Audio series, in which we investigated distortion as it applies to ...

It’s not often that a single photo can tell you pretty much everything you need to know about a project, but the spectrum analyzer screenshot nearby is the perfect summary of this over-the-top ...