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IEMs, Singers and Occlusion
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<blockquote data-quote="Andrew Broughton" data-source="post: 108461" data-attributes="member: 318"><p>Re: IEMs, Singers and Occlusion</p><p></p><p>Well, unfortunately, this subject is still not resolved for me yet.</p><p></p><p>In speaking to one VERY experienced IEM engineer who also makes IEMs, he says that the occlusion effect can only be reduced by ambient moulds. I asked about the length of tube, and he doesn't feel that this is a factor. Only fit (unsealed moulds) will alleviate it. I was quite surprised to hear this from an expert in the field.</p><p></p><p>In the very little that is written about occlusion and in-ears, they all seem to claim while venting works, occlusion can also be eliminated by having the mould go in far enough into the ear. And without the low-frequency loss and lack of isolation you get from ambients.</p><p></p><p>Most research that I can find is regarding in-ear hearing aids. I couldn't find any real research, just anecdotal evidence for musician/singer IEM/Occlusion issues.</p><p></p><p>e.g. <a href="http://www.hearingresearch.org/ross/hearing_loss/the_occlusion_effect.php" target="_blank">RERC on Hearing Enhancement - Dr. Ross Says...</a></p></blockquote><p></p>
[QUOTE="Andrew Broughton, post: 108461, member: 318"] Re: IEMs, Singers and Occlusion Well, unfortunately, this subject is still not resolved for me yet. In speaking to one VERY experienced IEM engineer who also makes IEMs, he says that the occlusion effect can only be reduced by ambient moulds. I asked about the length of tube, and he doesn't feel that this is a factor. Only fit (unsealed moulds) will alleviate it. I was quite surprised to hear this from an expert in the field. In the very little that is written about occlusion and in-ears, they all seem to claim while venting works, occlusion can also be eliminated by having the mould go in far enough into the ear. And without the low-frequency loss and lack of isolation you get from ambients. Most research that I can find is regarding in-ear hearing aids. I couldn't find any real research, just anecdotal evidence for musician/singer IEM/Occlusion issues. e.g. [url=http://www.hearingresearch.org/ross/hearing_loss/the_occlusion_effect.php]RERC on Hearing Enhancement - Dr. Ross Says...[/url] [/QUOTE]
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