White noise
White noise has approximately equal energy per hertz, so its spectrum contains proportionally more energy in higher octaves.
Online Noise Generator
Generate white, pink, or brown noise in your browser. Compare their spectra, select an output channel, and download a five-second WAV sample.
Browser generatedLive spectrumWAV export
ReadyPink noise
Channel
Start low. Pure tones and noise can be uncomfortable or damage hearing and equipment at high volume.
Live output spectrum20 Hz20 kHz
Press play to inspect the generated signal10% output
Signal, clearly explained
Generate with intent.
Use the controls above as a test source, then open the main analyzer when you want to inspect a recording or microphone input in more detail.
Open Spectrum AnalyzerPink noise
Pink noise distributes energy more evenly per octave and is commonly used for listening and broad frequency-balance checks.
Brown noise
Brown noise falls more steeply toward high frequencies and emphasizes deep, low-frequency motion.
Before you press play.
Which noise is best for audio testing?
Pink noise is a practical starting point for broad tonal-balance checks. The correct source depends on the measurement task.
Is this a calibrated test source?
It is a precise digital browser source, but acoustic results still depend on the playback device, microphone, room, and calibration.
Can I select only one channel?
Yes. Choose Left, Both, or Right to check channel routing.