This is an audio A/B selector with gain control. The project uses op-amps and resistors to smoothly switch between microphone and line inputs.
Today, phone-connected front-door cameras and comms systems are ubiquitous. Here's a DIY smart doorbell for engineers and ...
Steve Sells is describing the first listening test of the Naim Statement amplifier system, and how it pumped the heavy, ...
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Depending on who you ask, the podcast is either the best or worst thing to happen to the internet. And no matter what side you fall on in that particular debate, you’re going to want to start your own ...
Abstract: Bionic implants for the deaf require wide-dynamic-range low-power microphone preamplifiers with good wide-band rejection of the supply noise. Widely used low-cost implementations of such ...
Abstract: This paper describes the design of a front-end circuit consisting of an integrated preamplifier with a Sallen-Key Butterworth filter for very-high-frequency ultrasonic transducers and a ...