Give plenty of positive attention. …
Try to give toddlers some control over little things. …
Keep off-limits objects out of sight and out of reach. …
Distract your child. …
Help kids learn new skills and succeed. …
Consider the request carefully when your child wants something
Avoid situation that trigger tantrums
Help your child give words to feelings
Show empathy for their frustrations

Try and ignore them although it’s really hard I know!

Sing to yourself. I find it’s hard to get worked up or sucked into getting angry when you’re calm and singing helps you to remain detached a bit too. Keep checking they are OK. You could also google the difference between a melt down and a tantrum as they look very similar but are actually different things and so you can handle them differently.

say that you won’t listen to them until they talk in a normal voice

Thank you for your answers

Redirection is the key, distract the child and move their attention

My son use to have epic tantrums so much so we needed to get help, he also has other issues as he couldnt talk much at all to express himself.(he was later dignosed with selective mutism at 3 years old) So we ended up having to keeping calm and if we were at home we just had to give him a pillow or move him to a carpeted area so he could bang his head etc. We found the more we tried to control him the worse they got. He did eventually grow out of it once he learnt to try and talk a little more. We also had to after the tantrum and he was calm try to work ot what upset him so much.