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music circuit – Circuit Schematic
music circuit
That circuit allows you to adjust the resistance (with a pot) and adjust the capacitance by opening or closing switches. So, you can have any combination of swi...
Why are audio transformers required – Circuit Schematic
Why are audio transformers required
It has an audio transformer. I`m still attempting to grasp the concept of impedance and such, so can someone explain why this is necessary And how would such a ...
DC biasing audio signal – Circuit Schematic
DC biasing audio signal
My audio source will be a Line Level Audio -2V to +2V AC passed through a 220uF coupling cap and then a low pass filter(RC, 2 pole). The signal will be read by ...
Guitar Microphone Mixer Electronic Audio Kit for musicians – Circuit Schematic
Guitar Microphone Mixer Electronic Audio Kit for musicians
The mixer is really handy for DI`ing guitars and basses into soundcards or other mixers and making use of channels on mixes that do not have mike in`s, it comes...
Simple Audio Mixer circuit – Circuit Schematic
Simple Audio Mixer circuit
Add some resistors in parallel connection for more audio input. To adjust the volume for each input channel, add linear trimmer or potentiometer with configurat...
Computer Microphone – Circuit Schematic
Computer Microphone
This circuit was submitted by Lazar Pancic from Yugoslavia. The sound card for a PC generally has a microphone input, speaker output and sometimes line inputs a...
USB Sound Card with PCM2902 – Circuit Schematic
USB Sound Card with PCM2902
This is USB sound card with PCM2902 chip. For the purpose of testing the D / A converters, I built a simple USB sound card with the circuit PCM2902. The card ha...
Bass Treble Tone Control Circuit – Circuit Schematic
Bass Treble Tone Control Circuit
This simple tone control (bass & treble control) can be used in may audio applications. It can be added to amplifiers, used as a stand alone control module, or ...
PCM2706 High Fidelity USB Soundcard / USB Headphones – Circuit Schematic
PCM2706 High Fidelity USB Soundcard / USB Headphones
This is a high fidelity external USB Soundcard / USB Headphones project that can be built for your PC or Mac. It is based on the latest PCM2706 IC which functio...
Mini Audio Spectrum Analyzer LM3915 – Circuit Schematic
Mini Audio Spectrum Analyzer LM3915
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Modified Phantom-Powered Microphone Circuit Reduces Distortion – Circuit Schematic
Modified Phantom-Powered Microphone Circuit Reduces Distortion
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Digital TV Audio Boost Analog/Mixed-Signal – Circuit Schematic
Digital TV Audio Boost Analog/Mixed-Signal
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Second-Order Audio Filter Performs Multiple Functions – Circuit Schematic
Second-Order Audio Filter Performs Multiple Functions
The second-order multipurpose filter described here can perform as a low-pass, bandpass, high-pass, or notch filter at audio frequencies. What makes this filter...
Soundbar Design From Start To Finish: Clocks Clocks Clocks – Circuit Schematic
Soundbar Design From Start To Finish: Clocks Clocks Clocks
TI`s Dafydd Roche completes his 4-part series on sound-bar design with a detailed explanation of clock design for the digital portion of the circuit...
Low-Cost Audio Delay Line Uses 1-Bit ADC – Circuit Schematic
Low-Cost Audio Delay Line Uses 1-Bit ADC
Author Jim Walker describes a very low cost analog delay line circuit using parts such as the LM311 comparator and 74HC74 D flip-flop....
VU Meter with UAA180 – Circuit Schematic
VU Meter with UAA180
The circuit was designed based on the operation of Siemens UAA180 as it functions as a LED driver for light band displays for measuring the level of audio signa...
Audio Level Meter (VU Meter) – Circuit Schematic
Audio Level Meter (VU Meter)
This circuit uses just one IC and a very few number of external components. It displays the audio level in terms of 10 LEDs. The input voltage can vary from 12V...
USB Powered Stereo Computer Speaker – Circuit Schematic
USB Powered Stereo Computer Speaker
This is the circuit diagram of USB powered computer speaker, or it widely known as multimedia speakers for PCs. The circuit has single-chipbased design, low-vol...
Intercom Circuit Using LM390 – Circuit Schematic
Intercom Circuit Using LM390
This is a circuit for an intercom is a is a stand-alone electronic communications system intended for limited or private dialogue. Below schematic shows the app...
Compact DJ Station – Circuit Schematic
Compact DJ Station
The mixer appearance two stereo phono inputs and two stereo line-level inputs and has one stereo bond channel. A microphone ascribe and a stereo capital achieve...