This is notch filtered brown noise, with the notch centered at 6 kHz (6000 Hz). Brown noise is white noise with a filter for the high frequencies, and emphasis on the low frequencies. The notch filter is created by overlapping a low-pass filter and high-pass filter, so that 6 kHz is the center point between the two filters. All Tin-Ear videos are set to a continuous black background.
Many people enjoy listening to brown noise for the soothing effects that it can have. A frequency centered pink noise can help with 'tuning out' a particular external or internal sound at that frequency. The notched brown noise used here is created from the same noise used in my neuromodulator and notched noi...