vˈɛɹi ˈɔfən ɪɾ ɪz pˈɑːsᵻbəl tʊ ɚɹˈeɪndʒ ˈʌðɚ fˈɪzɪkəl fˈoʊtɑːn ɔːɹ pˈɑːɹɾɪkəl dɪtˈɛktɚz tʊ ˌɪntɚsˈɛpt ðɪ ʌnwˈɔntᵻd bˈækɡɹaʊnd ᵻvˈɛnts, pɹədˈuːsɪŋ ᵻsˈɛnʃəli sˌaɪməltˈeɪniəs pˈʌlsᵻz ðæt kæn biː jˈuːzd wɪð fˈæst ᵻlɛktɹˈɑːnɪks tə ɹᵻdʒˈɛkt ðɪ ʌnwˈɔntᵻd bˈækɡɹaʊnd.
Very often it is possible to arrange other physical photon or particle detectors to intercept the unwanted background events, producing essentially simultaneous pulses that can be used with fast electronics to reject the unwanted background.