Using Infrared reflection to pickup audio vibrations 20Hz-20Khz

Good Day all you laser peeps....

I am currently working on a project to use infrared light to detect audio frequencies on a reflective surface.... I would love it if a few of you who are interesated want to work on this project with me. This would be a deffered contract setup(meaning no pay until a working prototype or product is developed and gets picked up) working on the developement of new "microphone" like technology without the use of analog energy picked up and converted.

I am an audio designer and engineer and can work on developing the processing and quality part of the conversion. I am looking for someone to experiment with picking up auditory vibrations through a reflective material(like a mirror or plexi or other to be determined) with the infrared(not seen) light beams. I am open to using other lasers but this ultimately needs to be invisible and very reflective as to get the most data from the reflection possible.

There are extreme version of this on the market for upwards of $50K US a piece. I do have one company interested in backing the project and if we can develope something that works and can be demonstrated we can potentially recieve funding to proceed with the project further.

-Auraofblue

You can buy it pretty cheap:

Laser Listeners

That is actually a rather old concept, "spy technology" if you will. Bounce a laser beam off a window, and record what the occupants are saying.

Buy it for cheap? Where? Any links?

Also, this isn't for spy stuff and yes the stuff on the market I have seen so far is for that purpose...I am looking to develope a technology to replace the common body mic for live performance applications. Therefore attempting to take this technology to the next level and being able to possible use a chest cavity for the reflection medium. Even better would be to be able to filter the audio frequency off of something like haze.

Anyway,
Thanks for the responses so far.

-AOB

Just to clarify....

I am not looking for someone to try and duplicate or improve the "laser microphones" you can buy a kit for. I am looking to develop new technology using an infrared spread(not pointed beam) that is similar to watching infrared video.... or something similar to that... but instead using it to filter out the frequencies from 20Hz-20KHz. Like switching to night view on a camcorder picks up and filters different light spectrum so you can "see" in the dark.

Once again...I am not trying to use a "beamed or Beamed laser" or multiple lasers to reflect off a window or other medium but a spread emitter that will capture the reflections of an entire area... then narrowing the spread to focus in on a specific area... say 30 degrees down to 3 degrees... then finding out what medium, such as a mirror or plexi or maybe it is a done through reflections off of haze, etc that is the best medium to pull the data from to give us the best sound quality possible or maybe we don't need a specific reflective medium if we can pull the auditory frequencies out of the collage of reflections that will come from the room and people in the room itself.

Maybe that makes more sense?

-AOB

auraofblue said:

Just to clarify....

I am not looking for someone to try and duplicate or improve the "laser microphones" you can buy a kit for. I am looking to develop new technology using an infrared spread(not pointed beam) that is similar to watching infrared video.... or something similar to that... but instead using it to filter out the frequencies from 20Hz-20KHz. Like switching to night view on a camcorder picks up and filters different light spectrum so you can "see" in the dark.

Once again...I am not trying to use a "beamed or Beamed laser" or multiple lasers to reflect off a window or other medium but a spread emitter that will capture the reflections of an entire area... then narrowing the spread to focus in on a specific area... say 30 degrees down to 3 degrees... then finding out what medium, such as a mirror or plexi or maybe it is a done through reflections off of haze, etc that is the best medium to pull the data from to give us the best sound quality possible or maybe we don't need a specific reflective medium if we can pull the auditory frequencies out of the collage of reflections that will come from the room and people in the room itself.

Maybe that makes more sense?

-AOB

Click to expand...

There are extreme version of this on the market for upwards of $50K US a piece.

-Auraofblue

Click to expand...

Well... how about a link to those $50K systems that do just what
you need but are too expensive...:thinking:


Jerry

There is not a product that does what I am attempting to figure out... that is why I say it is new or to be found technology. I said there is an expensive version.. which is a beamed laser that uses a window to detect vibrations. Here is the link:

Laser Microphone | Laser Listening Devices SALE - Spy Mic

It was invented by an ex KGB spy that is for obvious reasons unemployed and trying to make a living.. as we all are.

Maybe infrared is the wrong direction for this. I am trying to push the limits and stir the minds of you guys in order to see if you want to attempt what has yet to be done... Remember when they said we would never fly? And the latest....we would never have wireless power(Yale University lit up a light bulb less than 10 feet away from a wireless power generator)?

Technology is getting extremely good so if we can come up with a way to detect audio signals via light reflection and convert that(using some of the latest technology in software... they have a new software that can now recreate images from just around 100 pixels into a full 1024X786 with amazing coloring/shading/lighting using mathematically correcting software coding) into a digital audio stream.

-AOB

I dont understand how your idea is supposed to work. The spy idea uses a window as a mirror and detects its vibrations.

But how can this be done without the window or mirror? There needs to be something reflective that vibrates along with whatever sound you are trying to pick up.

You could obviously position a mirror on a stage (or something similar) and use that to pick up the sound, but this would not perform any better compared to a microphone in the same location as the mirror. In fact, it would perform far worse when looking at audio quality.

From what I read in his posts....

to replace the common body mic for live performance applications. Therefore attempting to take this technology to the next level and being able to possible use a chest cavity for the reflection medium.

Click to expand...

He is trying to pick up sound vibrations from the "chest cavity" of
a person using Lasers...
He would basically need to pick up vibrations in the air with a laser
beam reflection.... I can't see this being done...IMO unless you use
a microphone which will pickup sound vibrations in the air...

Jerry

My idea is to use a medium in the air... such as haze... small water drops that vibrate with audio frequencies passing through them.. the light should be able to detect the subtle differences and convert it into frequency math.. then to digital audio after using filters to remove certain vibrations you are not tryiong to pick up....

There is a WMA laser design that is used to kill mosquitos and the device uses light to detect the audio patterns created by the wings of the mosquito.. the software can detect the slightest difference in patterns and even tell a female from a male mosquito.. then use a laser beam to kill the male mosquitos... I have the idea of taking that similiar techniology... of course without the destryong beam and converting it into audio data.

I am still stirring the pot to uncover some already discovered technology and try to discover new technology. I just think if this technology can be developed we could stop using wireless microphones or lavaliers on TV shows.....

Thanks for the responses.

AOB

Why a laser though? An infrared spotlamp should work just as well. I don't know about you but I'd rather take a wireless mic instead of having an IR laser pointed at me... Also, have you accounted for interference from other light sources?

I have thought of interference and I'm sure there might be some but most softwares should be able to be programmed to account for different light interference... as long as it seperates what frequency of light it is reading it shouldn't be a huge issue.

I thought a laser would be the best as it is a focussed light..... If the spotlamp could be focussed so it doesn't... lets say catch the audience noise, or the people offstage...etc... it sounds like it might work.

I am open to suggestions.

AOB

auraofblue said:

There is a WMA laser design that is used to kill mosquitos and the device uses light to detect the audio patterns created by the wings of the mosquito.. the software can detect the slightest difference in patterns and even tell a female from a male mosquito.. then use a laser beam to kill the male mosquitos... I have the idea of taking that similiar techniology... of course without the destryong beam and converting it into audio data.

Click to expand...

Can you give a link for this one?

Sure here ya go:

Intellectual Ventures Lab Malaria