You need to be able to hear every word of the recording. We want machine learning algorithms to be able to handle a variety of background noise, and even relatively loud noises or quiet background music can be accepted provided that they don’t prevent you from hearing the entirety of the text. Crackles or ‘breaking up’ that prevent you hearing the text means you should reject the clip.
sina o ken kute e nimi ale lon kalama. kalama suli en toki pi jan ante en kalama musi la ilo o awen ken sona e nimi. ijo li pakala e toki la sina ken ala kute e nimi ale la o weka e toki.