Active Speech Filter Design Calculator
Instructions for use: Please select the type of filter you want to design (Qualcomm, Low Pass or Bandpass Filter), click on the display circuit diagram to display the circuit diagram;
Input parameters: voltage amplification factor; filter cutoff frequency in HZ; capacitance C2 value in nF.
When you are designing a bandpass filter, enter the filter bandwidth you will design in the Bandwidth box.
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