maad.spl.volt2pressure
- maad.spl.volt2pressure(volt, gain, sensitivity=-35, dBref=94)[source]
Convert Volts to instantaneous sound pressure (p [Pa]).
- Parameters:
- voltndarray-like or scalar
ndarray-like or scalar containing the sound waveform in volt
- gaininteger
Total gain applied to the sound (preamplifer + amplifier)
- sensitivityfloat, optional, default is -35 (dB/V)
Sensitivity of the microphone
- dBrefinteger, optional, default is 94 (dBSPL)
Pressure sound level used for the calibration of the microphone (usually 94dB, sometimes 114dB)
- Returns:
- pndarray-like or scalar
ndarray-like or scalar containing the sound waveform in pressure (Pa)
Examples
>>> w, fs = maad.sound.load('../data/cold_forest_daylight.wav') >>> v = maad.spl.wav2volt(wave=w) >>> maad.spl.volt2pressure(volt=v, gain=42) array([ 0.00481491, 0.00574187, 0.00576913, ..., -0.00185099, -0.00097856, -0.00168741])
Same result with the function wav2pressure
>>> maad.spl.wav2pressure(wave=w, gain=42) array([ 0.00481491, 0.00574187, 0.00576913, ..., -0.00185099, -0.00097856, -0.00168741])