• صَوْت
• صَوْتكَ
• صَوْتكُمْ
• صَوْتهُمْ

Appears 5 times in the Quran.

1. 17:64 وَٱسْتَفْزِزْ مَنِ ٱسْتَطَعْتَ مِنْهُم بِصَوْتِكَ وَأَجْلِبْ عَلَيْهِم بِخَيْلِكَ وَرَجِلِكَ وَشَارِكْهُمْ فِى ٱلْأَمْوَٰلِ وَٱلْأَوْلَٰدِ وَعِدْهُمْ وَمَا يَعِدُهُمُ ٱلشَّيْطَٰنُ إِلَّا غُرُورًا

   And beguile whomsoever of them you can with your voice, and collect against them your forces riding and on foot, and share with them in wealth and children, and hold out promises to them; and the Shaitan makes not promises to them but to deceive:
   

2. 20:108 يَوْمَئِذٍ يَتَّبِعُونَ ٱلدَّاعِىَ لَا عِوَجَ لَهُۥ وَخَشَعَتِ ٱلْأَصْوَاتُ لِلرَّحْمَٰنِ فَلَا تَسْمَعُ إِلَّا هَمْسًا

   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.
   

3. 31:19 وَٱقْصِدْ فِى مَشْيِكَ وَٱغْضُضْ مِن صَوْتِكَ إِنَّ أَنكَرَ ٱلْأَصْوَٰتِ لَصَوْتُ ٱلْحَمِيرِ

   And pursue the right course in your going about and lower your voice; surely the most hateful of voices is braying of the asses.
   

4. 49:2 يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ لَا تَرْفَعُوٓا۟ أَصْوَٰتَكُمْ فَوْقَ صَوْتِ ٱلنَّبِىِّ وَلَا تَجْهَرُوا۟ لَهُۥ بِٱلْقَوْلِ كَجَهْرِ بَعْضِكُمْ لِبَعْضٍ أَن تَحْبَطَ أَعْمَٰلُكُمْ وَأَنتُمْ لَا تَشْعُرُونَ

   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.
   

5. 49:3 إِنَّ ٱلَّذِينَ يَغُضُّونَ أَصْوَٰتَهُمْ عِندَ رَسُولِ ٱللَّهِ أُو۟لَٰٓئِكَ ٱلَّذِينَ ٱمْتَحَنَ ٱللَّهُ قُلُوبَهُمْ لِلتَّقْوَىٰ لَهُم مَّغْفِرَةٌ وَأَجْرٌ عَظِيمٌ

   Surely those who lower their voices before Allah's Messenger are they whose hearts Allah has proved for guarding (against evil); they shall have forgiveness and a great reward.