Which sentences are the correct to ask someone to speak using a lower voice or a louder voice?

  • Can you please speak lower?

  • Can you please speak louder ?

  • Can you please low your voice?

  • Can you please loud your voice ?

  • 3
    Note that "lower" could mean more quietly (less loud) or it could mean with a lower pitch (deeper sound). It's not clear from your question which one you mean. Commented Dec 24, 2018 at 8:38
  • 1
    @ToddWilcox I immediately read "lower" as "deeper pitch". It wasn't until I read the answer I realized it could also mean "more quietly". Commented Dec 24, 2018 at 15:33

2 Answers 2


Maryam's comment pretty much covers it, although I'll add a few more examples:

Can you speak louder?
Can you raise your voice?
Can you speak up?
Can you speak more loudly?

Can you speak softer?
Can you lower your voice?
Can you speak more quietly?

Feel free to add "please", and/or "Could you ..." to make it more polite. You can also say "Would you ..." to make it more of a demand:

Would you please lower your voice in the library? Thank you.

Note: I don't know why you can say, "Could you speak up?" but you can't say, "Could you speak down?" It's just one of those strange English quirks.


It is more natural to use the adjective / adverb:

Would you speak louder. please?


Would you speak a little louder, please?

Would you speak (more) quietly. please?

could you speak a bit softer?

And if someone around you speaking or playing loudly, then you can say something like:

"Would you tone it down a bit, please."

As for

Can you please speak lower?

It may imply that the person should speak while being in a lower position.

But you can say:

Could you lower your voice?

  • 2
    "Can you please speak lower?" doesn't necessarily imply that someone should speak from a lower position. I would interpret that question as asking the person to lower or deepen the pitch of their voice.
    – Katy
    Commented Dec 24, 2018 at 2:08
  • 1
    I rewrited the sentence: "It may imply..." Commented Dec 24, 2018 at 2:13

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