Function libpulse_sys::volume::pa_cvolume_set_lfe_balance

pub unsafe extern "C" fn pa_cvolume_set_lfe_balance(
    v: *mut pa_cvolume, 
    map: *const pa_channel_map, 
    new_balance: f32
) -> *mut pa_cvolume

This is supported on crate feature pa_v8 only.