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Area Acoustics and electroacoustics / Underwater acoustics

IEV ref 801-32-63

Symbol
NPL

en
propagation loss, <in underwater acoustics>
PL
product of minus ten decibels and the base 10 logarithm of the squared magnitude of the transfer function from x0MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaamiEamaaBa aaleaacaaIWaaabeaaaaa@37BA@ to xMathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaamiEaaaa@36D4@

Note 1 to entry: In equation form: NPL=10lg(|H(f)|2/d0) dBMathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm 0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=xfr=xb9ad baGaciGabaqaamaaceGaaiGacaabaaGcbaqcaaeeaaaaaaaaa8qaca WGobGcpaWaaSbaaKqaafaapeGaaeiuaiaabYeaa8aabeaajaaqpeGa eyypa0JaeyOeI0IaaeymaiaabcdacaqGSbGaae4zaOWaaeWaaKaaa9 aabaGcpeWaaqWaaKaaa9aabaWdbiaadIeakmaabmaajaaqpaqaa8qa caWGMbaacaGLOaGaayzkaaaacaGLhWUaayjcSdGcpaWaaWbaaKqaaf qabaWdbiaabkdaaaqcaaKaai4laiaadsgak8aadaWgaaqcbauaa8qa caqGWaaapaqabaaajaaqpeGaayjkaiaawMcaaiaacckacaqGKbGaae Oqaaaa@4D05@, where H(f)MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaamisamaabm aabaGaamOzaaGaayjkaiaawMcaaaaa@3918@ is the transfer function from source position x0MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaamiEamaaBa aaleaacaaIWaaabeaaaaa@37BA@ to receiver position xMathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaamiEaaaa@36D4@. The transfer function, H(f)MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaamisamaabm aabaGaamOzaaGaayjkaiaawMcaaaaa@3918@, has dimensions of inverse distance (the value of reference distance d0 in the denominator of the logarithm argument in the equation is 1 m2).

Note 2 to entry: Propagation loss is defined for an equivalent monopole point source (where the source is treated as a point source of sound).

Note 3 to entry: This definition of propagation loss is consistent with that of ISO 18405, which is more generally applicable and valid for a finite source.

Note 4 to entry: The reference value for propagation loss is 1 m2.

Note 5 to entry: This note applies to the French language only.


fr
perte de propagation, <en acoustique sous-marine> f
PL, f
produit de moins dix décibels et du logarithme de base 10 de l'amplitude au carré de la fonction de transfert entre x0MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaamiEamaaBa aaleaacaaIWaaabeaaaaa@37BA@ et xMathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaamiEaaaa@36D4@

Note 1 à l'article: Sous forme d'équation: NPL=10lg(|H(f)|2/d0) dBMathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqipG0dh9qqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm 0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=xfr=xb9ad baGaciGabaqaamaaceGaaiGacaabaaGcbaqcaaeeaaaaaaaaa8qaca WGobGcpaWaaSbaaKqaafaapeGaaeiuaiaabYeaa8aabeaajaaqpeGa eyypa0JaeyOeI0IaaeymaiaabcdacaqGSbGaae4zaOWaaeWaaKaaa9 aabaGcpeWaaqWaaKaaa9aabaWdbiaadIeakmaabmaajaaqpaqaa8qa caWGMbaacaGLOaGaayzkaaaacaGLhWUaayjcSdGcpaWaaWbaaKqaaf qabaWdbiaabkdaaaqcaaKaai4laiaadsgak8aadaWgaaqcbauaa8qa caqGWaaapaqabaaajaaqpeGaayjkaiaawMcaaiaacckacaqGKbGaae Oqaaaa@4D05@, où H(f)MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaamisamaabm aabaGaamOzaaGaayjkaiaawMcaaaaa@3918@ est la fonction de transfert entre la position source x0MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaamiEamaaBa aaleaacaaIWaaabeaaaaa@37BA@ et la position de réception xMathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaamiEaaaa@36D4@. La fonction de transfert, H(f)MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaaiaabmqaamaabaabaaGcbaGaamisamaabm aabaGaamOzaaGaayjkaiaawMcaaaaa@3918@, a les dimensions de la distance inverse (la valeur de la distance de référence d0 dans le dénominateur de l'argument du logarithme dans l'équation est de 1 m2).

Note 2 à l'article: La perte de propagation est définie pour une source ponctuelle simple équivalente (avec laquelle la source est traitée comme une source acoustique ponctuelle).

Note 3 à l'article: Cette définition de la perte de propagation est conforme à celle donnée dans l'ISO 18405, applicable d'une manière plus générale, et valable pour une source finie.

Note 4 à l'article: La valeur de référence pour la perte de propagation est de 1 m2.

Note 5 à l'article: Le terme abrégé "PL" est dérivé du terme anglais développé correspondant "propagation loss".


ar
فقد الإنتشار, <الصوتيات تحت الماء>

de
Ausbreitungsmaß, <in der Unterwasserakustik> n
PL

ko
수중 전파 손실, <수중 음향학>

ja
伝搬損失

pl
straty propagacji, f pl

pt
perda de propagação, <em acústica submarina>

zh
传播损失, <水声学中的>

Publication date: 2021-02
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