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a 10-dB is the most popular phrase on the web.

an 10-dB 113,500 results on the web	a 10-dB 1884,000 results on the web More popular!
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Sound (noise) exposure levels tabulated in the ANP database are 10 The ambient noise must be at least 10 dB lower than the sound pressure levels to be measured. However, except at short slant distances where event levels are high, extraneous ambient noise often makes longer measurement intervals impractical and 10 dB down values are the norm. Chapter 4 is sound, except for 10 db, which is excellent. Is ΔL according to Table 3 greater or equal to 10 dB? (2.3.2) dB down values [19]. Readings on the measuring instruments produced by ambient noise and wind shall be at least 10 dB(A) below the sound level to be measured.	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

an 10-dB

113,500 results on the web

a 10-dB

1884,000 results on the web

More popular!

Sound (noise) exposure levels tabulated in the ANP database are 10
The ambient noise must be at least 10 dB lower than the sound pressure levels to be measured.
However, except at short slant distances where event levels are high, extraneous ambient noise often makes longer measurement intervals impractical and 10
dB down values are the norm.
Chapter 4 is sound, except for 10 db, which is excellent.
Is ΔL according to Table 3 greater or equal to 10 dB? (2.3.2)
dB down values [19].
Readings on the measuring instruments produced by ambient noise and wind shall be at least 10 dB(A) below the sound level to be measured.

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.