The Velleman K4301 Pink Noise Generator Kit is a precision audio test instrument designed for analysing room acoustics, testing loudspeaker systems, calibrating audio equipment, and evaluating frequency response. Producing high-quality pink noise across the full audible frequency spectrum, this kit is an essential tool for audio enthusiasts, sound engineers, installers, and DIY electronics hobbyists.
Pink noise contains equal energy per octave, making it the preferred test signal for measuring and optimising the acoustic characteristics of listening rooms, home theatres, recording studios, auditoriums, and public address systems. When used with a spectrum analyser and a linear-response measurement microphone, the K4301 allows accurate identification of frequency peaks and dips so that equalisers and sound systems can be adjusted for the most balanced audio performance.
The generator uses a 33-bit pseudo-random digital noise source to produce a stable and repeatable signal. Its adjustable clock frequency of 30kHz to 100kHz enables reliable operation, while the integrated 3dB per octave pink noise filter delivers an accurate frequency response across the entire 20Hz to 20kHz audio range.
For additional versatility, the circuit can easily be modified to generate white noise, making it suitable for a wider range of audio testing, electronic experiments, and laboratory applications.
The generator provides a 150mVrms output with a 1k output impedance, making it compatible with most audio analysers, amplifiers, mixers, and test equipment. It operates from either 9-12V AC or 12-15V DC, consuming only 5mA, making it highly energy efficient and suitable for permanent installation or portable testing equipment.
Supplied as a self-assembly kit, the Velleman K4301 offers both an educational electronics project and a professional-grade audio testing solution.
Whether you're tuning a hi-fi system, calibrating a recording studio, testing loudspeakers, or studying acoustics, the K4301 provides an accurate and dependable source of pink noise for professional results.
Features
- Precision pink noise generator kit
- Ideal for room acoustic analysis and audio system calibration
- 33-bit pseudo-random digital noise generation
- Accurate 3dB per octave pink noise filtering
- Full audible frequency coverage
- Adjustable clock frequency
- Can be modified to generate white noise
- Low power consumption
- Compact PCB design
- Suitable for DIY audio, laboratories, and educational projects
- Easy self-assembly
Specifications
- Product Code: Velleman K4301
- Product Name: Pink Noise Generator Kit
- Function Group: Audio Test Equipment
- Noise Type: Pink noise (modifiable to white noise)
- Noise Generator: 33-bit pseudo-random digital generator
- Clock Frequency: Adjustable from 30kHz to 100kHz
- Pink Noise Filter: 3dB per octave
- Frequency Range: 20Hz-20kHz
- Output Voltage: 150mVrms
- Output Impedance: 1k
- Power Supply: 9-12V AC or 12-15V DC
- Current Consumption: 5mA
- PCB Dimensions: 72 × 43mm (2.8 × 1.7")
- Typical Applications: Room acoustic analysis, loudspeaker testing, audio system calibration, equaliser adjustment, recording studio setup, home theatre optimisation, laboratory experiments, educational electronics, and professional audio measurement.
What's in the box
1 x Velleman K4301 Pink Noise Generator Kit for Audio & Acoustic Testing
