Elacin ER9 Manual Del Usuario página 62

EN
f in Hz Frequency in Hertz.
H in dB Attenuation value in predominantly high-frequency noise spectrum (f > 2000 Hz).
M in dB
Attenuation value in predominantly medium-frequency noise spectrum (f > 500 and f < 2000 Hz).
L in dB Attenuation value in predominantly low-frequency noise spectrum (f < 500 Hz).
SNR in dB Single Number Rating, to be deducted from C-weighted noise level.
Mf in dB Average attenuation value at given frequency f in decibel.
Sf in dB Standard deviation at given frequency f in decibel.
APVf in dB Assumed Protection Value (Mf - 1x Sf ), at given frequency f in decibel.
Specifications: The European type certification inspecation was performed according:
EN 352-2: 2002 | by IFA, 53757 Sankt Augustin, Kenn.no.: 0121, Germany.
EN352-2
NL
f in Hz Frequentie in Hertz.
H in dB Gemiddelde dempingswaarde in overwegend hoogfrequent geluidsspectrum (f > 2000 Hz).
M in dB Gemiddelde dempingswaarde in overwegend middenfrequent geluidsspectrum (f > 500 en f < 2000 Hz).
L in dB
Gemiddelde dempingswaarde in overwegend laagfrequent geluidsspectrum (f < 500 Hz).
SNR in dB Dempingswaarde, af te trekken van C-gewogen geluidsniveau.
Mf in dB Gemiddelde dempingswaarde bij gegeven frequentie f in decibel.
Sf in dB Standaarddeviatie bij gegeven frequentie f in decibel.
APVf in dB Gemiddelde dempingswaarde per frequentie f (Mf - 1x Sf ) in decibel (Assumed Protection Value).
Specificaties: Het Europese Unie type-onderzoek is uitgevoerd volgens:
EN 352-2: 2002 | door IFA 53757 Sankt Augustin, Kenn.nr: 0121, Duitsland.
EN352-2
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