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Tunable notch Filters for audio frequency - Q&A - Audio ...
https://ez.analog.com/audio/f/q-a/533898/tunable-notch-filters-for-audio-frequency
Requirement description: Tunable notch filter from 1KHz to 5KHz. Problem/Issue: Whistling noise in the audio frequency band 1KHz to 5KHz. Solution required: To identify and eliminate the noise in the frequency band of 1KHz to 5KHz. To have a practical solution to identify the noise frequency, we planned to have LTC1060 or LTC1067 in which the ...
filter - QSL.net
https://www.qsl.net/n/n7eku/other/W2EEY_tuneable-peak-notch-audio-filter.pdf
A tunable audio frequency peaking and notching (rejection) filter is one of the most useful accessories you can have. Besides providing effective audio selec- tivity for ssb or cw reception, the audio filter is a useful adjunct in conducting 22 0 march 1970
Tunable Notch Filter for audible frequency - Q&A - Audio ...
https://ez.analog.com/audio/f/q-a/539348/tunable-notch-filter-for-audible-frequency
Tunable Notch Filter for audible frequency. I have a requirement of tunable notch filter of notch frequencies from 1Hz to 20kHz, for which I selected these three IC's LTC1059, LTC1060 & LTC1067. The reason I have selected these IC's is that I found tunable notch circuits in the datasheets (in application section) of these IC's.
Notch Filter Circuits with Design Details - Homemade ...
https://www.homemade-circuits.com/designing-notch-filter-circuits/
Notch filter circuits are normally used for suppressing, nullifying, or cancelling a particular range of frequencies in order to avoid an annoying or unwanted interference within a circuit configuration. It specifically becomes useful in sensitive audio equipment such as amplifiers, radio receivers where a single or a selected number of ...
Tunable SSB/CW Audio Filter
http://www.radiomanual.info/schemi/ACC_audio/MFJ-751B_user.pdf
MFJ-751B Owner's Manual Tunable CW Audio Filter 3 THEORY OF OPERATION AND SPECIFICATIONS Operation: The MFJ-751B uses two TL084 operational amplifier integrated circuits to form a tunable audio filter designed to clarify and remove interfering signals from both voice and digital signals. The Peak and Notch functions are
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