loudness contour sentence in Hindi
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- The ATH is the lowest of the equal-loudness contours.
- Fletcher and Munson first measured equal-loudness contours using headphones ( 1933 ).
- This describes an equal-loudness contour circuit.
- These effects must be considered when comparing results of various attempts to measure equal-loudness contours.
- Audible quantization error is reduced by noise shaping the error according to an equal-loudness contour.
- In 2003, was revised as equal-loudness contour using data collected from 12 international studies.
- The lowest equal-loudness contour represents the quietest audible tone the " absolute threshold of hearing ".
- The unit of measurement for loudness levels is the phon, and is arrived at by reference to equal-loudness contours.
- The equal-loudness contours are a way of mapping the dB SPL of a pure tone to the perceived loudness level ( LN ) in phons.
- A-weighting began with work by Fletcher and Munson which resulted in their publication, in 1933, of a set of equal-loudness contours.
- He also developed the concepts of equal-loudness contours ( commonly known as Fletcher Munson curves ), loudness scaling and summation, and the critical band.
- Equal-loudness contours indicate the sound pressure level ( dB SPL ), over the range of audible frequencies, that are perceived as being of equal loudness.
- It is now better to use the generic term " equal-loudness contours ", especially as a recent survey by ISO redefined the curves in a new standard.
- Not only do equal-loudness contours vary with intensity, but perceived loudness of a complex sound depends on whether its spectral components are closely or widely spaced in frequency.
- Equal-loudness contours are often referred to as " Fletcher-Munson " curves, after the earliest researchers, but those studies have been superseded and incorporated into newer standards.
- Equal-loudness contours were first measured by Fletcher and Munson at Bell Labs in 1933 using pure tones reproduced via headphones, and the data they collected are called Fletcher Munson curves.
- Humans do not perceive low-and high-frequency sounds as well as they perceive sounds between 3, 000 and 4, 000 Hz, as shown in the equal-loudness contour.
- Note also that our sensitivity to different frequencies follows general loudness contours and higher frequencies tend to " roll off " . The preceding contribs ) 21 : 57, 14 January 2007 ( UTC ).
- The human ear is less sensitive to low frequencies, as indicated by Equal-loudness contours, so a well-designed system should be capable of generating relatively higher sound levels below 100 Hz before clipping.
- The sound level meter is useless for properly assessing noise levels, since the commonly used A-weighting is based on equal-loudness contours for pure tones, and is not valid for the random noise.
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