A little background noise is okay, but if you can hear another person speaking distinct words, the clip should be rejected. Typically this happens where the TV has been left on, or where there is a conversation going on nearby.
Una mica de soroll de fons està bé, però, si podeu sentir una altra persona dient altres paraules, hauríeu de rebutjar el tall. Normalment, això passa si s'ha deixat el televisor encès o si hi ha una conversa a prop.