Voltage Controlled Amplifier – VCA

Voltage Controlled Amplifier – VCA

The project presented here is a Voltage Controlled Amplifier (VCA). A VCA board helps users control the Audio Level from a remote potentiometer. It requires a single-ended audio signal in the input. Gain control voltage can be adjusted through an on-board potentiometer or use an...

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2.1 Channel Audio Processor with Subwoofer Output

2.1 Channel Audio Processor with Subwoofer Output

  This board is an Audio Processor built using PT2033 chip audio processor designed for versatile applications. It includes 3 stereo input selectors with internal gain and master volume control with low-frequency loudness compensation. It is capable of individual channel...

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1.144
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Stereo Audio Processor for Home TV Audio

Stereo Audio Processor for Home TV Audio

This PT2315E IC-based audio processor is designed for versatile applications and includes master volume control with low-frequency loudness compensation, speaker output attenuator, and tone control. It is a good solution for home audio signal processing. Due to the high-reliability...

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1.424
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3D Effect Audio Processor

3D Effect Audio Processor

The project presented here is a 3D sound processor, that regenerates 3D sound to stereo speakers. The board is able to regenerate 3D sound from a stereo audio input. It features of wide operating voltage range, wide dynamic range, and low output noise and is suitable for any audio...

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1.543
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Ground Isolation Audio Amplifier for Automotive Applications

Ground Isolation Audio Amplifier for Automotive Applications

This Ground Isolation Amplifier is developed for car and automotive applications. The board efficiently eliminates problems caused by wiring resistance and removes noise generated by other electrical devices used in automobile environment. In a car or automotive the audio system is...

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1.278
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Voice Echo Processor Module – Delay Device for Sound Effects, Echo, Reverb 

Voice Echo Processor Module – Delay Device for Sound Effects, Echo, Reverb 

The voice echo or digital delay sound effects project presented here is suitable for applications such as Karaoke, multimedia, musical instrument effects, electronics toys, animatronics, etc. The project is based on PT2399 chip, with an operating supply of 5V DC, and approx. 30mA...

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1.631
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Mono 2W – Switch-Mode (Class D) Audio Power Amplifier

Mono 2W – Switch-Mode (Class D) Audio Power Amplifier

This is a compact size, mono, switch-mode (Class-D) audio power amplifier intended for multimedia and general-purpose high-power applications. It has greater than 87% efficiency and is capable of delivering 2W maximum continuous power to a 4Ω load. The project is designed to be...

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1.280
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Accurate Acoustic Sensor – Sound Frequency to Voltage Converter

Accurate Acoustic Sensor – Sound Frequency to Voltage Converter

The project presented here is a sensitive sound sensor. The circuit converts sound frequency and outputs DC voltage.  The board consists of LM358 OPAMP and LM2907 IC. LM358 is used as a dual-stage microphone preamplifier and LM2907 acts as a frequency to voltage converter. The...

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