itu_r_468_weighting package¶
Submodules¶
itu_r_468_weighting.constants module¶
itu_r_468_weighting.filter module¶
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itu_r_468_weighting.filter.r468(frequency_hz: Union[int, float], khz_option: str, returns: str) → float¶ Takes a frequency value and returns a weighted gain value.
For weightening, the ITU-R BS.468-4 standard and the SMPTE RP 2054:2010 recommended practice are followed.
- frequency_hzint or float
The frequency value (in Hz) must be a value greater 0.
- khz_optionstr
Choose 1khz or 2khz as an weighting option. The weighting curves have a similar characteristic for both options, but are using a different amplification factor. They are shifted in a way, that the gain is 0.0 dB at the given frequency (1 or 2 kHz).
- returnsstr
Choose db or factor as option. db will output the weighted gain value in dB. factor will output the weighted gain value as a factor.
- float
The weighted value of the frequency.
- ValueError
If parameter frequency_hz is not greater 0. If parameter khz_option is not equal to 1khz or 2khz.