The word(s) "loud" appears 56 time(s) in 52 verse(s) in Quran in Muhammad Habib Shakir translation.

(41) So when they saw it as a cloud appearing in the sky advancing towards their valleys, they said: This is a cloud which will give us rain. Nay! it is what you sought to hasten on, a blast of wind in which is a painful punishment,

(42) O you who believe! do not raise your voices above the voice of the Prophet, and do not speak loud to him as you speak loud to one another, lest your deeds became null while you do not perceive.

(43) And We send down from the cloud water abounding in good, then We cause to grow thereby gardens and the grain that is reaped,

(44) Then those clouds bearing the load (of minute things in space).

(45) And if they should see a portion of the heaven coming down, they would say: Piled up clouds.

(46) So We opened the gates of the cloud with water pouring

(47) Is it you that send it down from the clouds, or are We the senders?

(48) When they shall be cast therein, they shall hear a loud moaning of it as it heaves,

(49) Then surely I called to them aloud:

(50) He will send down upon you the cloud, pouring down abundance of rain: