def test_distant_total_level_damped_rated_01(self):
level = audiocalc.distant_total_damped_rated_level(
octave_frequencies=self.octave_frequencies,
reference_distance=300,
distance=5000,
temp=20,
relhum=80)
self.assertEqual("%.4f" % level, "30.0600")
def test_distant_total_level_damped_rated_02(self):
"""distance < reference distance"""
level = audiocalc.distant_total_damped_rated_level(
octave_frequencies=self.octave_frequencies,
reference_distance=300,
distance=200,
temp=20,
relhum=80)
self.assertEqual("%.4f" % level, "64.3338")
import csv
# this is our sound source (a Airbus A319 airplane at start, maybe?)
octave_frequencies = {
'f63': 86,
'f125': 89.5,
'f250': 87.5,
'f500': 86.0,
'f1000': 83.0,
'f2000': 80.0,
'f4000': 77,
'f8000': 67.5
}
# the above values have been measure in this distance:
reference_distance = 300
with open('example01.csv', 'wb') as csvfile:
writer = csv.writer(csvfile, quoting=csv.QUOTE_MINIMAL)
writer.writerow(['humidity', 'temperature', 'distance', 'sound_pressure_level'])
for temp in range(35):
for hum in range(20, 90):
for distance in [500, 1000, 1500, 2000, 2500]:
level = audiocalc.distant_total_damped_rated_level(
octave_frequencies=octave_frequencies,
reference_distance=reference_distance,
distance=distance,
temp=temp,
relhum=hum)
writer.writerow([str(hum), str(temp), str(distance), "%.3f" % level])
