What I mean is, imagine you're in a restaurant, you're having a conversation, there are all kinds of other conversations going on in the restaurant, you want to filter them out, you want to focus on what's important to you.
Apa maksud saya, bayangkan anda dalam restoran, anda sedang berbual, ada pelbagai jenis perbualan sedang diutarakan dalam restoran, anda mahu tapiskannya, awak mahu fokus perkara penting bagi anda.