Pink Noise · 12 Hours · Low-Pass at 315 Hz

Pink Noise for 12 hours. The sound is low-passed at 315 Hz, so it is deep and soft, and it holds no hiss. Pink noise holds equal energy in each octave. It is softer than white noise and brighter than brown noise, and it is the closest of the three to the sound of rain or wind. This cut takes that sound and removes the top as well: a low-pass filter at 315 Hz takes out the sound above that point. What stays is a steady sound with no edge. Use it to mask a noise from a neighbour, an office, a road or a fan. Use it to sleep, to read, to study or to work. How this cut is made: The sound is generated, not recorded. A filter chain builds it from scratch, so it never repeats and it has no loop point. You can play the full 12 hours and hear no join. The two stereo channels come from two separate sources. A single source sent to both ears sits in the middle of your head, and that is tiring after some hours. Two sources sound like a room. The picture is a black screen. The whole file is sound, so the video is safe in a dark room and it uses very little data. The loudness is held at -21.5 LUFS on every cut on this channel. You set your volume one time, and every other video on the channel matches it. There is no fade, no swell and no movement of any kind. Specification: Colour pink Low-pass 315 Hz Length 11 h 59 min Loudness -21.5 LUFS True peak -2.0 dBTP Audio 48 kHz stereo, 384 kbit/s Picture 1920x1080 black LongLongForm makes one long sound at a time. Each cut changes one thing, so you can compare two cuts and hear what changed.