classroom microphone
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understanding a mic circuit
A user has been experimenting with modifications to a budget-friendly MXL V67s microphone to enhance its performance, specifically aiming to improve the condenser quality until a higher-end model can be acquired.
The MXL V67s is a popular choice among budget-conscious audio...
USB Powered Audio Power Amplifier
This circuit for multimedia speakers designed for PCs utilizes a single-chip architecture, operates on a low-voltage power supply, is compatible with USB power, facilitates easy heat dissipation, is cost-effective, offers high flexibility, and has a wide temperature tolerance. Central to...
Portable Mic Preamplifier
This circuit is mainly intended to provide common home stereo amplifiers with a microphone input. Using a stereo microphone the circuit must be doubled. In this case, two separate level controls are better than a dual-ganged stereo potentiometer. Low current...
Microphone Preamplifier with 5532 NE
This is a good example preamplifier for microphones that can be used in mixing consoles. The circuit uses a dual op-amp, type NE 5532. The amplifier must be adjusted. This connect the power supply and control over P1 such that...
Amplifier Timer Circuit Schematic
This circuit deactivates an amplifier or any connected device when a low-level audio signal at its input is absent for at least 15 minutes. Pressing P1 turns the device on, supplying power to any appliance connected to SK1. The input...
Audio Beat Detect ?« Electronic Product Design
This circuit employs a digital potentiometer to enable the microcontroller to automatically adjust the circuit's gain according to the ambient audio volume. However, a standard potentiometer can be used if automatic adjustment is unnecessary. The low-pass filter design is based...
mic recorder circuit
A voice sound recording circuit is desired, which, when triggered, will play the recorded sound through an amplifier circuit.
The proposed voice sound recording circuit can be designed using a microcontroller or dedicated audio recording ICs, along with an amplifier for...
Sound card microphone
Most sound card microphone inputs require a minimum signal level of at least 10 millivolts, but some older 8-bit cards need as much as 100 millivolts. The typical impedance of the PC sound card microphone input is in the range...
Microphone Circuit Test Oscillator
This unit would be mounted in a small plastic or preferably metal box, with a 9V battery, level control, a male XLR connector (same as on a mic) and a switch. Current drain is low, since the circuit only uses...