[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/all2en\/wiki32\/phone-acoustics-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/all2en\/wiki32\/phone-acoustics-wikipedia\/","headline":"Phone (Acoustics) \u2014 Wikipedia","name":"Phone (Acoustics) \u2014 Wikipedia","description":"before-content-x4 A wikipedia article, free l’encyclop\u00e9i. after-content-x4 For homonymous articles, see Phone. after-content-x4 The phone ( ‘ phon \u00bb In","datePublished":"2018-01-02","dateModified":"2018-01-02","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/all2en\/wiki32\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/all2en\/wiki32\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/44a4cee54c4c053e967fe3e7d054edd4?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/44a4cee54c4c053e967fe3e7d054edd4?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/9\/91\/Courbes_d%27isosonie.png\/300px-Courbes_d%27isosonie.png","url":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/9\/91\/Courbes_d%27isosonie.png\/300px-Courbes_d%27isosonie.png","height":"212","width":"300"},"url":"https:\/\/wiki.edu.vn\/all2en\/wiki32\/phone-acoustics-wikipedia\/","wordCount":1879,"articleBody":"     (adsbygoogle = window.adsbygoogle || []).push({});before-content-x4A wikipedia article, free l’encyclop\u00e9i.        (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4For homonymous articles, see Phone.        (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4The phone ( ‘ phon \u00bb In English) is a unit of Sonie, a perceived acoustic level of a sound, defined in the context of psychoacoustic research. Auditors with normal hearing perceive as also sound a sound whose level is n phones, and a pure sound at 1,000 hertz presented in gradual front waves from the front with a stable level of acoustic pressure from n DB SPL (decibels compared to 20  micropascals ). For stable pure sounds, the isosonic curves make it possible to determine a value in phones. In other cases, it is necessary to use the methods defined by the ISO 532 standard. This unit has no equivalent in the international unit system because it describes biological effects.          (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4The perceived intensity of a sound depends on the amplitude of vibratory energy. It is spotted in relation to a reference acoustic pressure of 20  mpa . The Decible Spl (DB SPL) expresses this report. But the Sons, that is to say the perceived sound volume, varies according to the spectral height-serious or acute character of the sound-determined by the frequency of the wave. In a first refinement of this approach, we apply a level weighting depending on the frequency ( Decibel A (DB A) ). This simple method does not always give satisfactory results, because the difference in perception between severe, medium and high -wing sounds depends a lot on the sound level.  Normal isosonic lines according to ISO 226: 2003 (ISO 226) standard. Isosonic curves represent the level of continuous pure sounds perceived as also sound. The level of sound of pure sound in phones reads on the diagram, knowing its level in DB SPL represented as an order and its frequency represented in abscissa. For all other sounds, even on narrow frequency bands such as Octave or Third of Octave, isosonic curves are different, and the measurement of the Sons must use other methods. Table of Contentsinternational system of Units [ modifier | Modifier and code ] Related articles [ modifier | Modifier and code ] References [ modifier | Modifier and code ] Notes [ modifier | Modifier and code ] international system of Units [ modifier | Modifier and code ] The International Weight and Measurement Bureau has resolved not to integrate new units units that “Describe biological effects” . These units include frequency weighting factors that “May not know or define precisely” . These weighting factors are dimensionless; The dimensional analysis of quantities which describe biological effects is the same as those on which it is based [ first ] . The phone is based on acoustic pressure, the unity of which in the international system is the Pascal, expressed by convenience in decibels compared to a reference acoustic pressure; The decibel is a unit outside the international system of units but whose use is accepted with the IS [ 2 ] . New research can lead to modifying the weighting factors, as has been the case for Isosonia curves at the basis of phones calculation. The measurement of the Sons is a complex operation, which must consider the directional or diffuse nature of the sound field, the distribution of the sound power depending on the frequencies, the evolution over time. The phone level of continuous sound can be estimated : if we can master the occurrence of sounds we can produce a pure sound at 1 kHz so as to equalize levels; Phones are then the level in decibels compared to 20  mpa (DB SPL) You son Pur. calculated With the procedure specified by one of the two ISO R 532-1975 recommendations, according to the Zwicker method or according to Stevens’ method (Brixen 2011, p. 75-79). A SONE corresponds, by definition, to the sound of a pure sound spreading in flat waves, from the front, of frequency 1000 Hz With 40 dB SPL pressure. The sound of a sound judged by a normal listener n times that of a sound of 1 is to n zones [ 3 ] . A pure 40 phones sound is listed at 1 Sound. For others, there is no simple relationship. Related articles [ modifier | Modifier and code ] References [ modifier | Modifier and code ] Norms Reference works Mario Rossi , Audio , Lausanne, Polytechnic and University Presses Romandes, 2007 , first re  ed. (in) Eberhard Zwicker and Hugh Fastl , Psychoacoustics. Facts and models , Berlin, Springer, 2007 , 3 It is  ed. ( first re  ed. 1990), 463 p.  (ISBN\u00a0 978-3-540-23159-2 , read online ) Notes [ modifier | Modifier and code ] \u2191 International Bureau of Weights and Measures , The International System of Units , S\u00e8vres, France, BIPM, 2019 , 9 It is  ed. , 216 p.  (ISBN\u00a0 978-92-822-2272-0 , read online  [PDF] ) , chap. 2.3.5 (“Sanrers’ units describing biological and physiological effects”), p. 29-30 .  \u2191 BIPM – Chapter 4 – Table 8., p. 33.  \u2191 ‘ 801-29-04 sone \u00bb , on electropedia.org         (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4"},{"@context":"http:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https:\/\/wiki.edu.vn\/all2en\/wiki32\/#breadcrumbitem","name":"Enzyklop\u00e4die"}},{"@type":"ListItem","position":2,"item":{"@id":"https:\/\/wiki.edu.vn\/all2en\/wiki32\/phone-acoustics-wikipedia\/#breadcrumbitem","name":"Phone (Acoustics) \u2014 Wikipedia"}}]}]