Paragraph 9.4 Acoustic data

(a)

shape and dimensions of measuring surface, location of microphones. Numbers of measuring points and wind direction shall be indicated in the diagram required under 9.2(a);

(b)

value of

10 \log 10 \frac{S}{S 0} (see 8.5);

(c)

place, date and time of measurements;

(d)

sound pressure levels recorded at measuring points (see 8.1.1);

(e)

average sound pressure level over measuring surface (see 8.1.2);

(f)

any dB corrections (see 8.6.1, 8.6.3 and 8.6.4);

(g)

surface sound pressure level L_pAm (see 8.4);

(h)

environmental constant C (see 8.6.2);

(i)

sound power level (see 8.5);

(j)

directivity index and number of the measuring point at which L_pAmax was recorded (see 3.6);

(k)

nature of noise (see 7.3);

(l)

where applicable, sound pressure levels at operator’s position (see Part 2).