Is there an ultrasonic test file sub, to calibrate the recommended -50db from speakers?
@Forum_Ambassadors @AnswerGroup
It would be helpful to manage this without having to run an actual title.
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The phone’s speaker can reproduce a maximum frequency of 18-20 kHz. Ultrasound - this is the frequency above 20 kHz. Some may go to 48kHz, which is the ultrasound region, which is not audible to human ear. Usually the speaker capable for this are industrial type.
The ultrasonic subliminals are in the upper end but still below 20khz, so most standard speakers will do.
I’m really asking about a subliminal test file to calibrate the sound level with.
I understand we can use FrequenSee, and I believe the optimal level is -50 db, and would also like to have confirmed if that’s at the point of emissIon from the speaker, or location where you listen.
For obvious reasons I don’t want to run a title each time I calibrate for a device.
As far as I know, there is no test file for ultrasound. It might be a good idea to use AscChamber for this, as it only contains the primer.
At least that way you’re not using the other subs too much.
Can’t think of anything better.
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Ultrasound is above 20kHz+ it can go as much as a mega hertz.
But you can hook up like a piezo buzzer to a 3.5mm analog stereo jack on the phone. Or unless the device supports HD audio (88kHz or above sampling rate) you’d still have the upper bound of 24 or 22.5kHz. The ultrasound level can go much higher.
A phone speaker can produce up to 20kHz. Some smartphone mic can be 30kHz that an app can use to detect an ultrasonic sound above 20kHz.
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If you look at my question, it was not about what is considered the true ultrasonic range or speakers that are capable of that.
It was assumed all who read it would understand I meant what are referred to as the ultrasonic subliminals here, which if you want to be technical are not, more high frequency.
Label on them is Ultrasonic Subliminal for None.
This wasn’t intended to become a science lesson on ultrasound.
Please keep to the question (in fact directed to @Forum_Ambassadors or @AnswerGroup)
We will look into this request. Which files say “none” on them? That’s from the variable where we normally enter the customer name and for production titles we simply enter “none” since major titles aren’t being name embedded. But, that tag isn’t supposed to be added to builds selected as a major title.
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It’s found on all my ultrasonic main store titles. That’s how it reads when the files are imported into music players.
You can utilize a masked subliminal to calibrate if you don’t want to use Frequensee.
We’ll discuss the request but it is unlikely we will provide such a file, as it is likely to be used for unintended purposes.
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I’m not sure how a masked could calibrate for an ultrasonic, aren’t those a lot louder to the subconscious, and the FrequencSee app gives negative value readings. I want to aim for about -55db up to -40 at most from where I am sitting in respect to the speaker.
No idea how such a test file could be used for incorrect purposes if all it has embedded are the words “This is a test file” or similar to that effect being repeated for a few minutes.
No worries, I’ll just do as suggested above and use Ascension Chamber.