1. Will you make your voice higher than usual?
2. I want you to make your voice loud so that the others can hear you clearly.
3. Can you make your voice clear and loud?
4. Can't you read the sentences out loud?
5. You need to read the part as loudly as possible.
6. Why don't you read the sentences aloud?
7. I have difficulty in hearing you. Speak up, please.
8. Don't read the part in such a soft voice. Raise your voice, will you?
9. You have a very quiet voice. Read them clearly.
10. We can't hear what you are reading, so make your voice higher than before.
11. You need to make your voice stronger. Your voice is too weak.
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I have written down 11 directions. Would you check them and correct expressions? I appreciate your help.
If you mean "louder" than usual, I'll make changes below in bold:
1. Will you make your voice louder than usual, please?
2. I want you to make your voice loud so that the others can hear you clearly.
3. Can you make your voice loud and clear?
4. Please read the sentences out loud?
5. You need to read the part as loudly as possible.
6. Why don't you read the sentences aloud?
7. I have difficulty in hearing you. Speak up, please.
8. Don't read the part in such a soft voice. Raise your voice, will you, please?
9. You have a very quiet voice. Please read the sentences more loudly.
10. We can't hear what you are reading, so make your voice louder than before.
11. You need to make your voice stronger [louder]. Your voice is too soft/quiet.
Certainly! Here are the corrections for each sentence:
1. Will you raise your voice higher than usual?
2. I want you to speak loudly so that others can hear you clearly.
3. Can you make your voice clear and loud?
4. Can't you read the sentences aloud?
5. You need to read that part as loudly as possible.
6. Why don't you read the sentences aloud?
7. I have difficulty hearing you. Please speak up.
8. Don't read that part in such a soft voice. Raise your voice, please.
9. You have a very quiet voice. Please read them clearly.
10. We can't hear what you are reading, so make your voice louder than before.
11. You need to speak with more strength. Your voice is too weak.
Please note that while the original sentences could be understood, these corrections make the expressions clearer and more natural.