Function stereo_screen 

pub fn stereo_screen(
    left: &[f64],
    right: &[f64],
    rate: SampleRate,
    f0: Option<Hz>,
) -> Result<StereoScreen, ConfidenceError>

Runs the screen on two channels of equal length, or on a sample range of them. f0 is the fundamental from the caller; without it every ipd_deg is None.

Errors

Never in practice; the reasons are built from counts and flags.