White-pink noise sung through peaks at 180, 360 and 540 Hz in a six-second cycle
Preview plays right here. The generator adds a sleep timer, full controls, and WAV export.
Singing Pipes is the sound wind makes across the mouth of an open pipe, or old plumbing resonating when the pressure changes: a hollow, whistling tone that rises with each swell and fades between. It is brighter and higher than Resonant Drone and has more of a breathy, aerated quality.
The color is 2.5, halfway between white and pink. Resonant filters at 180, 360 and 540 Hz with a Q of 30 and 50 percent mix ring the noise to a pitch near F-sharp and its harmonics. The envelope rises in 1 second, holds for 3 at 80 percent and releases over 2, a six-second cycle, while a sine pulse at 0.08 Hz adds a slower swell every twelve seconds.
It appeals to people who like tonal ambience and to composers looking for an organ-like bed. Resonant Drone is the lower, darker cousin at 110 Hz, and Hollow Tube gets a similar pipe quality from a comb filter instead of resonant peaks. Because of the twelve-second swell, it feels alive rather than static even over long stretches.