- published: 27 Mar 2011
- views: 1683
Near Instantaneous Companded Audio Multiplex (NICAM) is an early form of lossy compression for digital audio. It was originally developed in the early 1970s for point-to-point links within broadcasting networks. In the 1980s, broadcasters began to use NICAM compression for transmissions of stereo TV sound to the public.
The idea was first described in 1964. In this, the 'ranging' was to be applied to the analogue signal before the analogue-to-digital converter (ADC) and after the digital-to-analogue converter (DAC). The application of this to broadcasting, in which the companding was to be done entirely digitally after the ADC and before the DAC, was described in a 1972 BBC Research Report.
NICAM was originally intended to provide broadcasters with six high-quality audio channels within a total bandwidth of 2048 kbit/s. This figure was chosen to match the E1 primary multiplex rate, and systems using this rate could make use of the planned PDH national and international telecommunications networks.
Brian Harold May, CBE (born 19 July 1947) is an English musician and astrophysicist most widely known as the guitarist, songwriter and occasional singer of the rock band Queen. As a guitarist he uses his home-built guitar, "Red Special", and has composed hits such as "Tie Your Mother Down", "I Want It All", "We Will Rock You", "Fat Bottomed Girls" and "Who Wants to Live Forever".
He was made Commander of the Order of the British Empire in 2005 for "services to the music industry and his charity work". May earned a PhD in astrophysics from Imperial College in 2007 and is currently the Chancellor of Liverpool John Moores University. May currently resides in Surrey.
In 2005, a Planet Rock poll saw May voted the 7th greatest guitarist of all time. He was ranked at No. 26 on Rolling Stone magazine's list of the "100 Greatest Guitarists of All Time".
Brian May, the only child of Harold and Ruth May, was born in Hampton, London and attended Hampton Grammar School (now Hampton School). During this time he formed his first band with vocalist and bassist Tim Staffell, named Nineteen Eighty-Four after George Orwell's novel of the same name. He left Hampton Grammar School with ten GCE Ordinary Levels and three Advanced Levels in Physics, Mathematics and Applied Mathematics. He studied Mathematics and Physics at Imperial College London, graduating with B.Sc. degree with honours.
[Catalan language]
En sortir amb ímpetu del son
Tot cavalcant com si fos el primer cop
Desconeixes la ignorància que ens envolta en un entorn
Descobreixes camins de boires que t'acompanyen amb
migjorn
Continuaràs la ruta amb el fang, fins a sentir-te inclòs
Arribaràs amb rosada a les parpelles com si no fos un
esforç
Topes amb els murs que tenies davant, dins el més fred
bosc
Però recordes l'experiència d'un paisatge homenatjant el
tros
Confisca, doncs, de la realitat, l'ara, un bocí de
bellesa per sempre
I demana per un instant, la tramuntana de cara, com el
més ferm repte
Continuaràs la ruta amb el fang, fins a sentir-te inclòs
Arribaràs amb rosada a les parpelles com si no fos un