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Moreover, for a given noise power spectral density (PSD), spread-spectrum systems require the same amount of energy per bit before spreading as narrowband systems and therefore the same amount of power if the bitrate before spreading is the same, but since the signal power is spread over a large bandwidth, the signal PSD is much lower — often ...
In 2013, the album Silent Spread Sound Spectrum was released on the Society of Sound – a subscription based music retail project by Bowers & Wilkins audio equipment company. Subscribers receive two albums per month curated by Peter Gabriel and the London Symphony Orchestra.
This installation was at the Gallery from 12 March to 7 May 2006. It was installed in December 2007 at the Wolfsonian Museum in Miami Beach, FL, and again at 3-Legged Dog in New York City, where it was used to accompany a play about Antheil and Hedy Lamarr, and their invention of spread-spectrum technology, called Frequency Hopping. [18]
Frequency-hopping spread spectrum (FHSS) is a method of transmitting radio signals by rapidly changing the carrier frequency among many frequencies occupying a large spectral band. The changes are controlled by a code known to both transmitter and receiver .
George Johann Carl Antheil (/ ˈ æ n t aɪ l / AN-tyle; July 8, 1900 – February 12, 1959) was an American avant-garde composer, pianist, author, and inventor whose modernist musical compositions explored the sounds – musical, industrial, and mechanical – of the early 20th century.
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Direct-sequence spread-spectrum transmissions multiply the symbol sequence being transmitted with a spreading sequence that has a higher rate than the original message rate. Usually, sequences are chosen such that the resulting spectrum is spectrally white. Knowledge of the same sequence is used to reconstruct the original data at the receiving ...
The technology is used in telecommunications, radio broadcasting, signal processing, and computing. In analog frequency modulation, such as radio broadcasting, of an audio signal representing voice or music, the instantaneous frequency deviation , i.e. the difference between the frequency of the carrier and its center frequency, has a ...