Re: Quick detach vs thread on suppressors...
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BookHound</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RollingThunder51</div><div class="ubbcode-body">..
BTW - 1 to 2 dB is a big thing for some manufacturers and clients. Why? 3 dB is a doubling of perceived sound...<span style="font-weight: bold">doubling</span>. After dealing with perceived dB some manufacturers then work to attend to the residual noise perceived <span style="font-style: italic">at range</span> and work to mask that frequency.
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Well, you at least touched on frequency but you are still focusing on dB numbers and discounting frequency, some and dissipation. The sound meter does NOT tell you anything about tone or frequency.
I have two 5.56 suppressors that I've let a lot of people shoot side-by-side on identically setup AR15s. One of the suppressors always, regardless of ammo or environment, beats the second suppressor on the sound meter by 1 to 2 dB. But 100% of the people I've let shoot those suppressors agree the second suppressor sounds quieter.
dB numbers matter but only to an extent. They do not tell the complete story.</div></div>
Actually, the issue is duration, then frequency. A good synopsis is to be found here (shop name edited out as it really doesn't matter):
"The problem with decibel readings is that it expresses a pressure level of sound, and gives no insight as to the "quality" or frequency of the sound.
If we, the "experts", can be deceived users are at great risk of being deceived. That deception is now a crucial part of some of our competitors marketing campaigns. Far too often we have seen cases where the very best meter claimed that device "A" had a lower reading than device "B". However, observers unanimously agreed that device "B" sounded significantly quieter in all respects. In other words, the dB reading was the least accurate way to judge the true, and more importantly, applied use of a particular design. That leads us to another inescapable truth, again, important enough to be set off by itself:
We at XXXXXX, do consider data produced by our meters, but we are more interested in how the device sounds in actual use as perceived by the parties who use them. The sound meter's opinion is considered, but it doesn't get the final word on what we build.
We strive to design our suppressors so that the shot fired sounds "unlike" or "not characteristic" of firearm noise. We are aware of several units produced by other companies that do, according to the meter, produce less noise than our device of similar nature. However, when these devices are compared in real world live fire tests our devices are noticeably more pleasant to the human ear. Several well known silencer aficionados have observed these tests and agree with our attitude toward the decibel. They say our suppressors have the "sweet sound".
<span style="font-weight: bold">If you still need more proof, consider this. A good example of this "deception" is the comparison of sound between a .308 caliber rifle and a .300 WIN MAG rifle. The meter will tell us that both rifles produce the same decibel level of noise. Upon firing these rifles, however, all would agree that the .300 WIN MAG sounds much louder. What the decibel meter doesn't tell us is that although both rifles produce the same peak sound pressure level (SPL), the .300 WIN MAG holds its peak duration longer. In other words the .300 WIN MAG sound remains at full value longer and IS louder while the .308 goes to peak and falls off more quickly. dB meters fail in this, and other regards.</span>"
