'Sound' in the Bible

“Then the Lord heard the sound of your words, and He was angry and took an oath, saying,

Then the Lord spoke to you from the fire. You kept hearing the sound of the words, but didn’t see a form; there was only a voice.

"And Yahweh heard the sound of your words {when you spoke to me}, and Yahweh said to me, 'I have heard the sound of the words of this people that they have spoken to you; [they] are right [with respect to] all that they have spoken.