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<blockquote data-quote="Chris Johnson" data-source="post: 82247" data-attributes="member: 975">Re: Temperature compensationIt really depends on the event. In an arena with decent HVAC, its fairly irrelevant, because temperature will stay fairly constant. Humidity may not, but equally its going to change during the event more than in the time between load in and doors, so then it becomes about your ability to adjust live, and whether you want to do that.Where it plays a much bigger role though is in outdoor shows in certain areas. Ive done many a summer outdoor show where you load in at 9am, which means that time alignment happens at about 1pm or so (after lunch of course!), but the show doesn&#039;t start proper (after openere) until 9pm. In these situations, the temperatures can change by as much as 20 degrees between alignment and show. However, you need big distances to make an appreciable difference. over 100m, a 20 degree temperature difference is roughly equal to a 10ms difference in delay time. But arguably, in a distributed large format system, all that really does is shift the point of alignment. Since there will almost certainly be a point where the sources are coherent, it will just be 4m further away....So in short, for most touring applications, its not worth it. But it is certainly worth understanding the effects...</blockquote>

[QUOTE="Chris Johnson, post: 82247, member: 975"] Re: Temperature compensation It really depends on the event. In an arena with decent HVAC, its fairly irrelevant, because temperature will stay fairly constant. Humidity may not, but equally its going to change during the event more than in the time between load in and doors, so then it becomes about your ability to adjust live, and whether you want to do that. Where it plays a much bigger role though is in outdoor shows in certain areas. Ive done many a summer outdoor show where you load in at 9am, which means that time alignment happens at about 1pm or so (after lunch of course!), but the show doesn't start proper (after openere) until 9pm. In these situations, the temperatures can change by as much as 20 degrees between alignment and show. However, you need big distances to make an appreciable difference. over 100m, a 20 degree temperature difference is roughly equal to a 10ms difference in delay time. But arguably, in a distributed large format system, all that really does is shift the point of alignment. Since there will almost certainly be a point where the sources are coherent, it will just be 4m further away.... So in short, for most touring applications, its not worth it. But it is certainly worth understanding the effects... [/QUOTE]

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