[permalink] [id link]
The Fletcher – Munson curves are one of many sets of equal-loudness contours for the human ear, determined experimentally by Harvey Fletcher and Wilden A. Munson, and reported in a 1933 paper entitled " Loudness, its definition, measurement and calculation " in the Journal of the Acoustic Society of America.
from
Wikipedia
Some Related Sentences
Fletcher and –
* 1935 – Cliff Fletcher, Canadian businessman
* 1984 – Police Constable Yvonne Fletcher is killed by gunfire from the Libyan People's Bureau ( Embassy ) in London during a small demonstration outside the embassy.
* 1981 – Brendan Fletcher, Canadian actor
* 1579 – ( baptized ) John Fletcher, English playwright ( d. 1625 )
* 1910 – Robert Fletcher Shaw, Canadian businessman, academic and civil servant ( d. 2001 )
* 1961 – Andrew Fletcher, English singer and musician ( Depeche Mode )
* 1934 – Louise Fletcher, American actress
* 1952 – Lieutenant Colonels Joseph O. Fletcher and William P. Benedict of the United States land a plane at the North Pole.
* 1975 – Jason Fletcher, American sports agent
* 2001 – Robert Fletcher Shaw, Canadian civil servant, deputy commissioner general of the Expo 67 ( b. 1910 )
* Adrian Fletcher ’ s Paradoxplace – Portrait ( Subiaco ) and Tomb ( Lateran ) of Innocent III
* 1948 – Duncan Fletcher, Rhodesian-Zimbabwean cricketer and coach
* 1973 – Terrell Fletcher, American football player
* May 3 – U. S. lieutenant colonels Joseph O. Fletcher and William P. Benedict land a plane at the geographic North Pole.
* April 17 – WPC Yvonne Fletcher is shot and killed by a secluded gunman leading to a police siege of the Libyan Embassy in London.
* June 25 – Cyril Fletcher, British comedian ( d. 2005 )
* January 21 – Bertram Fletcher Robinson, English journalist, editor and author ( b. 1870 )
* April 28 – Mutiny on the Bounty: Fletcher Christian leads the mutiny on HMS Bounty against Captain William Bligh.
* January 1 – Fletcher Norton, 1st Baron Grantley, English politician ( b. 1716 )
* December 18 – Fletcher Henderson, American musician ( d. 1952 )
* March 23 – Bryan Fletcher, American football player
* August 22 – Bertram Fletcher Robinson, journalist, editor and author ( d. 1907 )
* June 23 – Fletcher Norton, 1st Baron Grantley, English politician ( d. 1789 )
* August – John Fletcher, English writer ( b. 1579 )
* December – John Fletcher, English writer ( d. 1625 )
Fletcher and Munson
* Fletcher – Munson curves
These are now defined in the international standard ISO 226: 2003, and the research on which this document is based concluded that earlier Fletcher – Munson curves and Robinson-Dadson curves were in error.
* Fletcher – Munson curves
The film's main character is Fletcher Munson ( played by Soderbergh ), an office employee working under Theodore Azimuth Schwitters, the leader of a self-help company / religion / lifestyle known as Eventualism, a clear reference to L. Ron Hubbard and Scientology.
It is Mrs. Munson, who has considered the offer and has left Fletcher.
* Steven Soderbergh as Fletcher Munson / Dr. Jeffrey Korchek
Equal-loudness contours were first measured by Fletcher and Munson using headphones ( 1933 ).
Loudness, being a psychological quantity, is difficult to measure, so Fletcher and Munson averaged their results over many test subjects to derive reasonable averages.
Although the A-weighting curve, in widespread use for noise measurement, is said to have been based on the 40-phon Fletcher – Munson curve, research in the 1960s demonstrated that determinations of equal-loudness made using pure tones are not directly relevant to our perception of noise.
# REDIRECT Fletcher – Munson curves
The first research on the topic of how the ear hears different frequencies at different levels was conducted by Fletcher and Munson in 1933.
Until recently, it was common to see the term ' Fletcher – Munson ' used to refer to equal-loudness contours generally, even though a re-determination was carried out by Robinson and Dadson in 1956, which became the basis for an ISO 226 standard.
According to the ISO report, the Robinson – Dadson results were the odd one out, differing more from the current standard than did the Fletcher Munson curves.
The report states that it is fortunate that the 40-phon Fletcher – Munson curve on which the A-weighting standard was based turns out to have been in agreement with modern determinations.
* Equal-loudness contours by Fletcher and Munson
# REDIRECT Fletcher – Munson curves
0.166 seconds.