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Listen DC vs a hovering dragon
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<blockquote data-quote="Celebrim" data-source="post: 718242" data-attributes="member: 4937"><p>Well, I happen to think that a hovering creature would be pretty darn loud. Even a medium creature has a 12' wingspread. </p><p></p><p>First, let's separate difficulty in hearing it from difficulty in pin pointing it by sound alone. What is the DC to hear it?</p><p></p><p>Well, it should be clear that certain things have a DC to hear them of MUCH less than 0. For instance, the sound of a unmuffled shotgun at 5' has a DC check of about -400 if the rule regarding +1 per 10' holds. </p><p></p><p>However, such a rule clearly doesn't scale well over great distances and results in something that can clearly be heard at a mile, not being hear 100 yards further on. </p><p></p><p>A better rule might be +1 per 10' out to 200', then +1 per 100' out to 2200', then +1 per 1000' out to 22200' and so on.</p><p></p><p>Under that rule, the DC of hearing a rifle shot at 5' scales to a more manageable -43. A thunderclap has a DC of closer to -60.</p><p></p><p>Clearly, however a hovering dragon is not a loud as a shotgun, or at least it wouldn't seem reasonable for it to be that loud. On the grounds that dragons are often said to have 'wings like a hurricane', I suppose you could claim a big dragon was as loud as a helicopter and that would get us back in the range of shotgun.</p><p></p><p>How loud is it? I don't know. I personally like the number DC -10 at a distance equal to the size of the dragon. Therefore, pinpointing the location of a 40' long dragon, 40' away from you requires a DC 10 listen check. A 5' long dragon, also 40' away from you requires a DC 14 listen check. Where did these numbers come from? They happen to produce numbers whose range I like, and that's good enough for me.</p><p></p><p>If the dragon glided, rather than hovering, then I think the DC would go up by at least 10. So to hear a 40' dragon swooping down on you 150' away requires a DC 11 listen check, but to actually pinpoint its location requires a 31.</p></blockquote><p></p>
[QUOTE="Celebrim, post: 718242, member: 4937"] Well, I happen to think that a hovering creature would be pretty darn loud. Even a medium creature has a 12' wingspread. First, let's separate difficulty in hearing it from difficulty in pin pointing it by sound alone. What is the DC to hear it? Well, it should be clear that certain things have a DC to hear them of MUCH less than 0. For instance, the sound of a unmuffled shotgun at 5' has a DC check of about -400 if the rule regarding +1 per 10' holds. However, such a rule clearly doesn't scale well over great distances and results in something that can clearly be heard at a mile, not being hear 100 yards further on. A better rule might be +1 per 10' out to 200', then +1 per 100' out to 2200', then +1 per 1000' out to 22200' and so on. Under that rule, the DC of hearing a rifle shot at 5' scales to a more manageable -43. A thunderclap has a DC of closer to -60. Clearly, however a hovering dragon is not a loud as a shotgun, or at least it wouldn't seem reasonable for it to be that loud. On the grounds that dragons are often said to have 'wings like a hurricane', I suppose you could claim a big dragon was as loud as a helicopter and that would get us back in the range of shotgun. How loud is it? I don't know. I personally like the number DC -10 at a distance equal to the size of the dragon. Therefore, pinpointing the location of a 40' long dragon, 40' away from you requires a DC 10 listen check. A 5' long dragon, also 40' away from you requires a DC 14 listen check. Where did these numbers come from? They happen to produce numbers whose range I like, and that's good enough for me. If the dragon glided, rather than hovering, then I think the DC would go up by at least 10. So to hear a 40' dragon swooping down on you 150' away requires a DC 11 listen check, but to actually pinpoint its location requires a 31. [/QUOTE]
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Listen DC vs a hovering dragon
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