The Python library for Sound Transmission Class (STC) calculation
Project description
pyacoustics-stc
The Python library for Sound Transmission Class (STC) calculation
Installation
pip install pyacoustics-stc
Example
Calculate STC
from pyacoustics_stc import SoundTransmissionClass
# sound transmission loss as dict object {Frequency : Value}
stl = {
125: 11.66, 160: 13.303, 200: 14.825, 250: 20.861,
315: 22.868,400: 24.943, 500: 26.881, 630: 28.889,
800: 30.964, 1000: 32.902,1250: 34.84,1600: 36.984,
2000: 38.923, 2500: 40.861, 3150: 27.557, 4000: 30.67,
}
stc = SoundTransmissionClass(stl=stl)
stc.point
# 29
stc.deficiency
# 25.579
stc.coutour
# {125: 13, 160: 16, 200: 19, 250: 22, 315: 25, 400: 28, 500: 29, 630: 30, 800: 31, 1000: 32, 1250: 33, 1600: 33, 2000: 33, 2500: 33, 3150: 33, 4000: 33}
stc.delta
# {125: 1.34, 160: 2.697, 200: 4.175, 250: 1.139, 315: 2.132, 400: 3.057, 500: 2.119, 630: 1.111, 800: 0.036, 1000: 0, 1250: 0, 1600: 0, 2000: 0, 2500: 0, 3150: 5.443, 4000: 2.33}
Visualization
stc.plot() # display result as graph
stc.export_graph_result("stc.png") # save graph result as image
# <your_local_path>/stc.png
Utils
from pyacoustics_stc.utils import build_frequency_stl_map
stl_without_key = [
22.49669, 27.85324, 32.77704, 46.30192,
52.32415, 58.54912, 64.36372, 70.38595,
76.61092, 82.80217, 87.39175, 92.54538,
97.27899, 70.36132, 77.44058, 84.8613
]
stl = build_frequency_stl_map(stl_without_key)
stl
# {125: 22.49669, 160: 27.85324, 200: 32.77704, 250: 46.30192, 315: 52.32415, 400: 58.54912, 500: 64.36372, 630: 70.38595, 800: 76.61092, 1000: 82.80217, 1250: 87.39175, 1600: 92.54538, 2000: 97.27899, 2500: 70.36132, 3150: 77.44058, 4000: 84.8613}
Testing
python -m pytest
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