Verse 2

अद्यापि न निवृत्तो मे संशयः परमेश्वर ।किं रूपं तत्त्वतो देव शब्दराशिकलामयम्

In plain words

Even now my doubt has not ceased, O Supreme Lord. What is the form, in truth, O God? Is it made of the of the mass of sound?