Unknown suppressors OG testing

Somewhere in the Rokslide universe there is a similar archery thread between the great "tone" / "sound" argument, between our sacred Matthews and Prime bow lovers. :)
 
If those numbers are correct, that's a huge difference at 6 dB due to log units of decibels.

OG is 2x as loud in terms of measured sound pressure. As I posted above, it would need to be +10 dB to be "perceived" to be twice as loud since our ears and brain are not as good as a meter for detecting pressure change.

For humans to notice a change in sound, many consider +3 dB to be the smallest detectable. But, some with optimal hearing may detect +1 dB.

One thing to note is that Unknown listed A-weighting for the Reaper and no mention of weighting for the OG. A-weighting is used to represent the frequency response of the human ear, which is OK, but I'd rather see no weighting or at least consistency in the reporting. Unknown may benefit by cleaning things up a bit. And we still need to know what equipment was used - maybe I need to check the podcast.

In terms of tone, that's a rabbit hole. And actually "tone" is not technically the way that I would describe the claim. A tone is a single frequency, and it is unlikely that the spectra (data in freq domain) is centered around a single frequency. In prod dev, we'd call it "tonal quality" or "sound quality". Yeah, it's nitpicking but it's these sorts of things that make people raise eyebrows and question the technical ability of those reporting the results on the website.

I worked as a noise engineer for a bit, but I am not an expert in sound quality - it's a slippery slope, as it involves psychoacoustics. I think I posted about it before, but it is a highly specialized field in acoustics. There are special (expensive!) sound quality packages available to post-process noise data based on how the brain interprets what it gets from the ears.

Anyway, I was just a Test Guy in acoustics, but was involved with some sound quality studies. The studies were led by a licensed Chief w/advanced degree in Acoustics as the analyst. Just when we thought we'd get widespread agreement from the test subjects, it fell apart. It fell apart because of a robust test plan. If we just made some measurements under a few conditions, we might have made bad conclusions.

All that to say, it is extremely common to hear people make all sorts of claims about noises, tones, etc. that don't make sense to a noise engineer. People hear something then make some bold claim not realizing individual differences or limitations.

For example, early on there were claims that the tones from the OG were less disruptive to big game. That may be true, however that assumes that the frequency response of deer, elk, pronghorn, etc. are the same as the human ear. We know that's not the case, they have different frequency response and a noise engineer would be cautious to assume that what he/she heard was the same as what an animal perceived. I haven't seen or heard that claim in awhile, so maybe it's not being used as a selling point now. And to prove it, would require a robust test plan which would be daunting and probably worthy of PhD dissertation!

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You're talking my language here. Musician and former audio engineer.
 
4. If you feel like you were an early adopter and lied to about what your OG is exactly please reach out to me. (rokslide DMs are the most reliable way) and I will make sure that we do something to soften the blow. Sincerist apoligies if you feel this way.
To be clear, I think it’s a (very) small minority who thinks they have been “lied to” so I wouldn’t stress that too much! More so just a bit bummed out with the timing of it but understandable. Appreciate you chiming in @Unknown Suppressors, good stuff.
 
Simple Math GIFs | Tenor
 
They are using Larson Davis Spartan M821. It is the same that I just got.

Good deal - thanks formi. The gunfire variant seems handy, but I've never used it.

So 48k sample rate and A, C, Z weightings? FYI - you may miss the true peak with the sample rate and rise time. Not saying that you should sell your truck and buy an expensive analyzer, but just know the limitations :geek:.

Can you run A-weighting and Z-weighting at the same time?

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Good deal - thanks formi. The gunfire variant seems handy, but I've never used it.

So 48k sample rate and A, C, Z weightings? FYI - you may miss the true peak with the sample rate and rise time. Not saying that you should sell your truck and buy an expensive analyzer, but just know the limitations :geek:.

Can you run A-weighting and Z-weighting at the same time?

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Oh we have learned the limitations… and we are planning on getting a better one but yeah…. They are expensive
 
This thread is wild. I bought an OG when they first went on sale. I paid the full price and its my first suppressor. Of course it stung a little when they almost immediately went on sale but the sale is based completely on an external change in regulations hard to fault unknow there.

As far as the new innovation that led to a better product I think its very difficult to hate on unknown for that. Releasing the best product they have seems like good business, certainly the accelerated timetable is not what we are used to but alternatively they could of kept the 6.5 og to themselves for the time being and would of been accused of not bringing the best thing to the public and using proprietary stuff.
Im happy with the OG for what it is. A suppressor that doesn't add a lot of length to a rifle. It currently lives on my wife's 6mm creedmoor and its a pleasure to shoot it.
If I were to buy one again today it would be a no brainer to go with the new 6.5 model(and it will likely be my next purchase) but I dont feel like I was lied to or that unknown is in the wrong for developing new models.
 
Do you have any shorter barrel OG65 data considering 18-20” is more common suppressed barrel length?

Using the phrase “way better” when describing the OG65 when it’s shot on a 24” and the OG is a 20” may not be the best descriptor. Conversely, have you shot the OG on a 24” barrel? If not, maybe the delta between the two isn’t as drastic as it may seem, and could even quell some of heartburn felt by initial OG buyers if the gap is not as large on equal barrel lengths.

A terrible suppressor can sound great on a long enough barrel; not saying that is what this at all, just making the point that barrel length has a drastic impact on sound attenuation.
 
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