we have even more extreme examples, so yes.
While the blue whale is usually thought to be the loudest animal at usually around 175 decibels to 180,the Sperm whale can produce clicks of up to 200 decibels, which is around what it takes to kill a person. However, this is aided by the fact that they're in the water, and that's not where your wyvern lives, apparently.
Lucky we have another example that might just be what we're looking for: the greater bulldog bat.
The greater bulldog Bat, due to the easily dissipated ultrasound frequencies they use to hunt, need to Procure very loud calls in order to be effective. This resulted in an animal that, despite its relatively small size, can create sounds at a maximum of around 140 decibels at 10 cm away and 120 from a meter away. How does it avoid being deafened by its own call? Apparently it tightly squeezes its ear muscles to muffle the sound that arrives,as well as to separate their hearing bones, thus reducing sensitivity to sound. This process takes less than a second. This seem to be a common strategy against bats.
So while I couldn't give you the answer "we got animals that can kill you with sound, that ain't nothing", we do have examples of animals with calls more than loud enough, so longe as you're in the right range, to make you feel like your eardrums will burst. If an animal much smaller than your wyvern can do it, it surely can as well. The main differences here will be about the frequency however. Not only these bat's calls aren't feared due to being above what we can hear, they're ultrasound, meaning they don't propagate over long distances. To reach your "can be heard over miles and cause pain in humans" goal, your wyvern will need frequencies a bit closer to infrasound, but still within the human's hearing capabilities. Elephants for example, can produce rumbles that can propagate over around 6 miles away, and nowadays we assume that t-rex too used similar frequencies to communicate over miles. With the right frequency at this intensity, it can certainly cause pain and most likely confuse nearby humans, as well as other animal which hear at similar frequencies.