The word(s) "voices" appears 4 time(s) in 4 verse(s) in Quran in Muhammad Habib Shakir translation.

(1) On that day they shall follow the inviter, there is no crookedness in him, and the voices shall be low before the Beneficent Allah so that you shall not hear aught but a soft sound.

(سورة طه, Taa-Haa, Chapter #20, Verse #108)
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(2) And pursue the right course in your going about and lower your voice; surely the most hateful of voices is braying of the asses.

(سورة لقمان, Luqman, Chapter #31, Verse #19)
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(3) 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.

(سورة الحجرات, Al-Hujuraat, Chapter #49, Verse #2)
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(4) Surely those who lower their voices before Allah's Apostle are they whose hearts Allah has proved for guarding (against evil); they shall have forgiveness and a great reward.

(سورة الحجرات, Al-Hujuraat, Chapter #49, Verse #3)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)