Tag Archives: Filter

Programmable Capacitance Multiplier with DAC

Posted on October 13, 2011 by Rust

Capacitance multiplier simulate high capacitance capacitor for analog signal signal processing. By using DAC (Digital-to-Analog Converter), we can simulate variable capacitance with very wide range, which can be used in digitally controlled analog processor (programmable filters for example). The following … Continue reading →

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High-Impedance Input Hi-Fi Tone Control

Posted on April 21, 2011 by Rend

Tone control circuit is an electronic circuit which is designed to manipulate the tone of audio signal. Tone of audio signal is analog to color in light. We don’t call the tone of audio signal as red, green or or … Continue reading →

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20Hz High-Pass Rumble Filter, Subsonic Blocker

Posted on March 23, 2011 by Rend

This is a schematic diagram of 20-Hz high-pass rumble filter circuit.  Rumble noise could come from many sources, such as wind blow around an outdoor microphone, mechanical disturbance on phonograph, or many other possibilities. We can remove this noise by … Continue reading →

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