R/E/P Community

R/E/P => Recording - Engineering & Production => Topic started by: bogeyandre on April 13, 2016, 10:57:20 PM

Title: LIVE speech ultrasound audio.
Post by: bogeyandre on April 13, 2016, 10:57:20 PM

I am working on a project.  I am trying to find out how to take LIVE speech-vocal audio and crank it up to ultrasound audio transmission.  20 KHz and yet still clear enough to have a persons sub concious percieve words subconciously.  I am hearing things like a heterodyne mixer and frequency shifting. 

Title: Re: LIVE speech ultrasound audio.
Post by: Fletcher on April 14, 2016, 10:14:37 AM

Wow -- that sounds like a rather ambitious project!!  Please keep us updated on your progress!!

Peace

Title: Re: LIVE speech ultrasound audio.
Post by: ConorBlake on April 25, 2016, 02:44:20 AM

That seems great! Your problem is much more serious than mine - you are trying to find out how to take LIVE speech-vocal audio and crank it up to ultrasound audio transmission. This is kinda problematic task to have a persons' sub concsious percieve words subconciously. I have no idea how you can do it; I am trying to figure out how to write an essay (http://essaydune.com/blog/page/2/), and there are already a lot of professionals who are eager to help me with my task. Update us on any news whether you managed with the problem :)

Title: Re: LIVE speech ultrasound audio.
Post by: Grandleos on September 27, 2016, 07:27:32 AM

Learning is necessary, and I think the matter deserves to learn it more.

Title: Re: LIVE speech ultrasound audio.
Post by: boz6906 on October 09, 2016, 03:15:15 PM

Shouldn't be difficult, just mix (beat) the speech signal with affixed tone where the sum of the original freq. and the beat tone are in the ultrasonic range.

A 30kHz tone would bump up the output freq range 30020 to 50kHz.
Highpass the output at 20kHz and you have only an ultrasonic speech signal.

This is very interesting way to explore nature.

Here's a similar method to bring VLF RF down to audible range, realtime:

http://www.universetoday.com/102234/put-the-aurora-borealis-in-your-ear/

Title: Re: LIVE speech ultrasound audio.
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