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Low Earth Orbit
DIY Audio
60 Degree DIY Mid Hi - AKA PM60
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<blockquote data-quote="Mark DeArman" data-source="post: 145406" data-attributes="member: 950"><p>Re: 60 Degree DIY Mid Hi</p><p></p><p></p><p></p><p>Yes sir.</p><p></p><p></p><p></p><p>Yep, and that was an especially broad bandwidth. I see this a lot of prototype products which come into my shop.</p><p></p><p></p><p></p><p>Unknown, I don't use that type of measurement system, so I don't have a lot of experience. I know that random noise will tend to average out of the measurement, and that signals correlated with stimulus which are not part of the ideal LTI system model will reduce the coherence. I was really asking questions, trying to learn myself.</p><p></p><p></p><p></p><p>It wasn't really telling me anything either, except that there was a problem. Why I thought it would be interesting to measure, is that I thought it would be neat to see in the T-F plane, what was going on with those frequencies. Whether it was problem, with modes in the horn throat, constricting the throat, and widening the pattern, the horn its self resonating, or reflections. It sounds like Peter did some experimenting and is on to something.</p></blockquote><p></p>
[QUOTE="Mark DeArman, post: 145406, member: 950"] Re: 60 Degree DIY Mid Hi Yes sir. Yep, and that was an especially broad bandwidth. I see this a lot of prototype products which come into my shop. Unknown, I don't use that type of measurement system, so I don't have a lot of experience. I know that random noise will tend to average out of the measurement, and that signals correlated with stimulus which are not part of the ideal LTI system model will reduce the coherence. I was really asking questions, trying to learn myself. It wasn't really telling me anything either, except that there was a problem. Why I thought it would be interesting to measure, is that I thought it would be neat to see in the T-F plane, what was going on with those frequencies. Whether it was problem, with modes in the horn throat, constricting the throat, and widening the pattern, the horn its self resonating, or reflections. It sounds like Peter did some experimenting and is on to something. [/QUOTE]
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60 Degree DIY Mid Hi - AKA PM60
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