Prosody

I was looking for the word to describe what one misses by relying on written words instead of hearing them spoken. Without the melody, rhythm, rate, and emphases, one can completely misinterpret the intended meaning. You might imagine sarcasm or emotion when none was intended or you might miss it when it is intended. And this problem is accentuated by texting because even the use of italics and punctuation is usually missing. Bolding and exclamation marks are so overused that they convey little these days. 

So what is the word for these vocalized touches that enable us to fully understand the speaker's words? Prosody.
Although I had heard the word in connection to the reading of poetry, I was unaware of its application to everyday speech. (People who have experience with sufferers of autism or Parkinson's may be familiar with the word because people with those diseases often have absence of prosody in their speech.) I am trying to rely a bit less on texting and emailing so that prosody can play its all-important role.