Where does this come from, and can I check it?

Fraunhofer Institute scientists developed psychoacoustic compression to make music downloadable. The figure is taken from Fraunhofer IIS, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a technology fact?

Yes. It sits on the Technology shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

The MP3 compression algorithm reduced audio file sizes by ninety percent

Fraunhofer Institute scientists developed psychoacoustic compression to make music downloadable

Developed by Karlheinz Brandenburg and researchers at Germany's Fraunhofer Institute during the late 1980s, the MP3 format removed sound frequencies masked by human hearing limitations. This psychoacoustic model compressed digital audio files to one-tenth of their original size while retaining high auditory quality. MP3 files enabled digital music downloading and portable digital media players.

Where this comes from

Fraunhofer IIS

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

Go further

Technology trivia Bandwidth Calculator

More facts like this

The storage capacity of the Compact Disc was set at 74 minutesSony and Philips agreed on a 74-minute audio disc format to hold full classic musical performances Spacewar! was one of the earliest interactive computer video gamesSteve Russell and fellow MIT students wrote Spacewar! on a PDP-1 minicomputer in 1962 FORTRAN was the first widely used high-level programming languageJohn Backus and IBM introduced Fortran in 1957 to simplify mathematical computing The C programming language was created to write the Unix operating systemDennis Ritchie developed C at Bell Labs between 1972 and 1973 for system portability Linus Torvalds released the first Linux kernel in 1991A Finnish university student published a free Unix-like operating system kernel online Edgar Codd proposed the relational database model in 1970The IBM mathematician used relational algebra to organize data into linked tables using SQL

Tags: audio, mp3, compression

The MP3 compression algorithm reduced audio file sizes by ninety percent: the short answers

Where does this come from, and can I check it?: Fraunhofer Institute scientists developed psychoacoustic compression to make music downloadable. The figure is taken from Fraunhofer IIS, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a technology fact?: Yes. It sits on the Technology shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.