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MSRAAF - Resistor Programmable Active Audio Filter
https://mix-sig.com/index.php/msraaf-resistor-programmable-active-audio-filter
The resistor programmable continuous audio active filter IC is a CMOS chip that can be configured for either a lowpass, bandpass, highpass, allpass or notch filter. Butterworth, Bessel, elliptic and Chebyshev filters can be implemented. The frequency range covers the audio spectrum to 20 kHz. There is a low power version with a frequency range to 5kHz.
Audio Filters: Designing an audio equalizer – Part 7
https://www.engineersgarage.com/audio-filters-designing-an-audio-equalizer-7-8/
Equalizers can be designed using audio filters or integrated chips (such as an LA-3600, which is a five-band equalizer IC). For this project, we’ll design a three-band, graphic equalizer circuit using audio filters. So, it will have low, high, and band-pass filter circuits to separate the low, high, and mid-range frequencies of the audio signal.
Do narrow-band single-chip bandpass filters for audio ...
https://electronics.stackexchange.com/questions/237766/do-narrow-band-single-chip-bandpass-filters-for-audio-frequencies-exist
You can build a pretty good narrow bandpass filter from a typical quad op-amp package and some resistors and capacitors. If you want to use fewer components than that, you could look at one of the specialised filter ICs on the market, such as TI's UAF42. Opamps will probably work out cheaper though. The requirement for binary output might be harder.
Looking for ideas- bandpass audio filter - General ...
https://forum.arduino.cc/t/looking-for-ideas-bandpass-audio-filter/955948
Looking for ideas- bandpass audio filter. Using Arduino General Electronics. SteveMann February 6, 2022, 3:47pm #1. I have a medical device that beeps to alert me that something needs attention. Problem is- I can't hear the beep. (The beep is the same frequency as my tinnitus.) So, I am wondering about building an audio preamp with a band-pass ...
Bandpass Filter - Cherry Audio
https://docs.cherryaudio.com/cherry-audio/bandpass-filter
The Cherry Audio Bandpass Filter is a simple audio filter which allows frequency content at and around a specified frequency to pass through the filter while attenuating the signal above and below it. The width of the frequency band can be adjusted from quite wide to extremely narrow making this a tremendously versatile bandpass filter.
Easy Audio Bandpass Filter Kit - QRP Kits
http://www.qrpkits.com/files/AFBPF_Manual_V4_20160707.pdf
Easy Audio Bandpass Filter Kit Description and Specifications The Audio Frequency Band Pass Filter kit from qrpkits.com provides A basic audio filter kit with preamp, op-amp filter and LM386 audio amp to drive headphones or speaker. It has a peak in audio response that is tunable from approximately 300Hz to 2Khz and has a bandwidth
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