Applied Instruments Noise Generators

Applied Instruments Noise Generators

In real life applications, noise is inherent in nature and exists in electronic devices. For this reason, it is often important to have a Noise Generator inject a noise signal into a device under test (DUT) to test its behavior in a more realistic simulated scenario. There are various types of noises, and two of the most common types are white noise and pink noise. With the capabilities of an AWG, these noise can be approximately simulated at the output of the generator. White noise has a flat power spectrum and equal power per unit frequency, while pink noise has equal power per octave.

If you choose to test an audio system using noise, use pink noise, as you might put too much energy into the tweeters if you use white noise. Pink noise in an audio system is useful because if you listen carefully and hear sounds that don't sound like noise, you may have found an imperfection in the audio system's response.