You can also find brown noise on most sleep sound apps. The energy of blue noise is mostly concentrated at the high-frequency end, with very few deep tones to balance it out. As such, blue noise ...

similar to how blue light has more energy at shorter wavelengths. It sounds a bit like a hissing hosepipe. While it's often used in audio engineering and signal processing, it's not commonly used ...

As an aside, Neville at Harman believes that linear power supplies are preferable to the smaller and arguably more efficient switch-mode supplies here, as they produce less noise and provide “cleaner ...