58 lines
1.7 KiB
Python
58 lines
1.7 KiB
Python
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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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Created on Tue Aug 14 12:49:27 2018
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@author: J.A. de Jong - ASCEE
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Description: calibrate device using measurement
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"""
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import numpy as np
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import argparse
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from lasp.lasp_measurement import Measurement
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from lasp.lasp_common import P_REF
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import os
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spl_default = 94.
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gain_default = 0.
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parser = argparse.ArgumentParser('Calibrate device using'
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' calibration measurement')
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parser.add_argument('--gain-setting','-g',
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help='DAQ Input gain setting during calibration in [dB]' +
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f' default = {gain_default} dB.',
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type=float, default=gain_default)
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parser.add_argument('fn',help='File name of calibration measurement', type=str)
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parser.add_argument('--channel',help='Channel of the device to calibrate, default = 0',
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type=int, default=0)
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parser.add_argument('--spl','-s',help='Applied sound pressure level to the'
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f' microphone in dB, default = {spl_default}',
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default=spl_default)
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args = parser.parse_args()
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m = Measurement(args.fn)
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nchannels = m.nchannels
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# Reset measurement sensitivity, in case it was set wrongly
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m.sensitivity = np.ones(nchannels)
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# Compute Vrms
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Vrms = m.prms * 10**(args.gain_setting/20.)
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prms = P_REF*10**(args.spl/20)
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sens = Vrms / prms
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print(f'Computed sensitivity: {sens[args.channel]:.5} V/Pa')
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print('Searching for files in directory to apply sensitivity value to...')
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dir_ = os.path.dirname(args.fn)
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for f in os.listdir(dir_):
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yn = input(f'Apply sensitivity to {f}? [Y/n]')
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if yn in ['','Y','y']:
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meas = Measurement(os.path.join(dir_,f))
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meas.sensitivity = sens
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