Puberty.
sucking in helium makes the pitch higher
Using the active voice rather than passive voice
Yes, there are apps like Voice Changer Plus and Funny Call that can change the pitch of your voice to make it sound higher. These apps usually offer various voice effects and settings to customize the pitch change to your liking.
Change the voice -> Voice change must be done.
To change your voice on ooVoo you will have to use their voice changer software.
Helium is the only gas that makes your voice squeaky.
helium makes your voice really high
To change a sentence from passive to active voice, simply flip the subject and object of the sentence. For example, "The letter will be sent by Jane" changes to "Jane will send the letter." This makes the sentence clearer and more direct.
I think from computer stuff they change the voice a little to make it even more better...
He teaches us english- change the voice
Can it be changed into passive voice?
change into active voice this essay was written by him