Trivia

Hard

Comfort Noise Is A Tool Used Widely In Which Industry?

Pediatric Care
Telecommunications
Animal Husbandry
Construction
A sample of a sound wave.
betmari/Flickr

Answer: Telecommunications

Modern telecommunication devices like cellular and landline handsets are too good for, well, their own good. Historically, there was always some line noise in the background of an analog telephone connection. Even when no one was talking and no background noises from the other end of the connection were transmitted, there was always a persistent and low-level hissing noise that signaled to the listeners that the line was active.

When telephone networks, both landline and cellular, began shifting toward digital transmission technologies, the hiss vanished only to be replaced by synthetic background noise. It turns out that we’d all grown accustomed to the faint white noise in the background and that in the absence of it, several things happen. First, people believe the call has been dropped because the line is too silent. Second, the shift from zero noise to speaking volume is jarring and unpleasant. Finally, the way noise-gate circuitry functions in the absence of that white noise means the voice transmission can sound choppier to the listener.

To combat those problems and to give people the experience they’d grown used to over a lifetime of telephone use, modern telephone systems and hardware include a small but dedicated sub-system designed expressly to introduce the missing analog white noise back to the handset. This noise is known as “comfort noise” and is even formally outlined and defined via the RTP Audio Video Profile, RFC 3389.

Trivia

Hard

Which Punctuation Mark Didn’t Have A Dedicated Key Until The 1970s?

Trivia

Very Hard

Which Novelist Indirectly Contributed To Particle Physics?

Trivia

Easy

1816 Is Known As “The Year Without A Summer” Because Of Events Triggered By?

Trivia

Easy

Where Were Scenes For The Star Wars Planet Tatooine Filmed?

Trivia

Easy

The Only Planet In Our Solar System That Isn’t Named After A Roman Deity Is?

Trivia

Hard

Han Solo And Indiana Jones Appeared Together In The Crossover Work Called?

Trivia

Easy

What Early Plastic Was Created as an Alternative to Secreted Beetle Resin?

Trivia

Hard

The Speed Of A Computer Mouse Is Measured In What Unit?

Trivia

Hard

The Phrase “Ground Rules” Originated In?

Trivia

Hard

Which Of These Cosmetic Procedures Is Linked To A Decrease In Empathy?