Reply to thread

Message

<blockquote data-quote="Ivan Beaver" data-source="post: 131047" data-attributes="member: 30">Re: &quot;Tectonic plates&quot; from the front page.A bell has NO polar pattern and makes NO sound!!!!!!!!!!!!!!!!!!!!UNTIL it is struck.&nbsp; And just look at the striker.&nbsp; How many bells have you seen that have multiple strikers?&nbsp; None that I have seen.&nbsp; The ones I am aware of use a SINGLE striker-just like a single loudspeaker driver.So how do you describe &quot;volume&quot;. Most people think of it as Sound PRESSURE Level.Any clean system will not sound loud until you try to talk.&nbsp; It happens all the time.I&#039;m sorry but I don&#039;t get the whole &quot;Direct sound is canceled by reflections back into it&quot;.Yes I will agree that SOME freq could be reduced. But that is the nature of combfiltering within the whole room due to different arrival times from loudspeakers and reflections (or multiple loudspeakers covering the same are), peaks and dips in the response.&nbsp;But since the phase of different freq has different wavelengths-at a given distance from loudspeaker to reflective surface, at some freq the &quot;returning wave&quot; will be out of phase (causing cancellations) and OTHER freq will be in phase-CAUSING ADDITION in level.&nbsp; Other freq will be somewhere inbetween.I&#039;m sorry-but I need a better explanation to &quot;understand&quot; what is going on.&nbsp; I have just never heard of somebody trying to reduce feedback by adding more reflections.&nbsp; Maybe that is a new approach <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile&nbsp; &nbsp; :)"&nbsp; data-smilie="1"data-shortname=":)" /></blockquote>

[QUOTE="Ivan Beaver, post: 131047, member: 30"] Re: "Tectonic plates" from the front page. A bell has NO polar pattern and makes NO sound!!!!!!!!!!!!!!!!!!!! UNTIL it is struck. And just look at the striker. How many bells have you seen that have multiple strikers? None that I have seen. The ones I am aware of use a SINGLE striker-just like a single loudspeaker driver. So how do you describe "volume". Most people think of it as Sound PRESSURE Level. Any clean system will not sound loud until you try to talk. It happens all the time. I'm sorry but I don't get the whole "Direct sound is canceled by reflections back into it". Yes I will agree that SOME freq could be reduced. But that is the nature of combfiltering within the whole room due to different arrival times from loudspeakers and reflections (or multiple loudspeakers covering the same are), peaks and dips in the response. But since the phase of different freq has different wavelengths-at a given distance from loudspeaker to reflective surface, at some freq the "returning wave" will be out of phase (causing cancellations) and OTHER freq will be in phase-CAUSING ADDITION in level. Other freq will be somewhere inbetween. I'm sorry-but I need a better explanation to "understand" what is going on. I have just never heard of somebody trying to reduce feedback by adding more reflections. Maybe that is a new approach :) [/QUOTE]

Verification