rfactor: World-wide website writing and design, plus gossip and speculation by Steve Rossi

Revised on Thursday, April 19, 2018

Half Tone

Looney Tones?

Sounds not like these 222.

Deep note.

The Deep Note is THX's audio trademark, being a distinctive synthesized crescendo that glissandos from a low rumble to a high pitch. The sound is used on trailers for THX-certified movie theaters, home video, video games, and car infotainment systems.

The Deep Note debuted at the premiere of Return of the Jedi in Los Angeles. Since then, it has gone on to be a pop culture icon both in meme and cult nature.

HomePod sounds

Ready to set up
Source one
Timer one
Set up Traget

Shepard tone

A Shepard tone, named after Roger Shepard, is a sound consisting of a superposition of sine waves separated by octaves. When played with the bass pitch of the tone moving upward or downward, it is referred to as the Shepard scale. This creates the auditory illusion of a tone that continually ascends or descends in pitch, yet which ultimately seems to get no higher or lower. —Wikipedia

Super Mario 64 Music—Looping Steps (Endless Stairs)

A spectrum view of ascending Shepard tones on a linear frequency scale

Shepard Tones spectrum linear scale

Textile manufacturer’s silent care instructions.

Although there is an international standard that has been agreed to by the ISO and, within Europe, by the EU, copyright laws make it difficult to publish these widely.—Wikipedia

Laundry symbols
laundry Symbols edited and posted on Reddit.com