After Moshe received the Aseret HaDevarim he came down from the mountain and heard a lot of noise coming from amongst the people that awaited his arrival. The people had just built a golden calf, and were singing and dancing around it. Yehoshua who was there with Moshe interpreted the sound as people shouting. But Moshe replied: "Not a sound shouting strength nor a sound shouting weakness; a sound of distress do I hear." (Exodus, 32:18)
What did Moshe hear that Yehoshua couldn’t in order for him to interpret this sound as a sound of distress. What could Moshe have meant when he said this to Yehoshua?