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I need install a system for sound reproduction Answered

Hello, I need URGENT help, I must construct a system to help a few children with disability to go freely by some rooms
1 - I need to put into each of the 20 rooms, 20 cells (one for room) with infrared light placed spectrum that activate an MP3 system that every child has individualy. They must to have earphones to listen the MP3
2 - This MP3 must have 20 different tracks of sound, therefore, every lounge or room will have to activate the sound track that corresponds to every place. Room one activate track one, room two activate track two an so on. Per example. If the child goes to room 14 there must to be activated into his o her track 14 into there MP3. If one of the childs go out of the radio of influence of the cell, the system will go out in expectation of being activated by another cell of another lounge, the children's quantity that for opposite to every photocell is 20
3 - Also I am looking these children microcips of sound that can be placed in the cards as like those of Christmas so that they give a small message of Christmas to the precionarse for them, which we could record with one helping messeges no more that 9 o 15 seconds

I am much needed from this PLEASE, YOU THAT QUITE THEY IT CAN IN THESE TOPICS... HELP ME

Thank you Rodrigo Gutierrez
rodriguti53@yahoo.com
Bogota South Colombia America 

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Paracelso2005

8 years ago

Thanks for the answer, very kind, Each boy have an MP3 unit with eartphone. As far as they go for one room, the cell activate the track that correspond to that room. The tracks has been recorded previusly so that, they know what are in one of those. I need to construct these system urgently because I have many people come to get my help by the moment.

Thanks a lot for the help

Rodrigo Paracelso

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steveastroukParacelso2005

Answer 8 years ago

I'd just Amplitude modulate an IR emitter in each room with the audio track for that room. Each boy has a very very simple receiver for the IR. You could get fancy and use FM I suppose, but this is very simple and very cheap to do.

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Re-design

8 years ago

Let me see if I understand what you are needing.

20 rooms, each room needs to have a different message.

as each child goes into each room that child should hear that room's message

and as the child leaves the room the message goes away.

This could be done very easily buy transmitting the sound in each room over IR diode light. Each child caries a receiver that receives the ir light and plays the message only while in the room. As soon as they leave the room the sound goes away and works the same in each room.

Would this work as you described?

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frollardRe-design

Answer 8 years ago

That was exactly what I was going to suggest -- transmit the sound, not the room's identity, that way you only need 20 sound players and x receivers.

If as it turns out they need less than 20 users to go among 20 or more rooms, it might make sense to have an mp3 player on each person that somehow listens for a room identity packet over infrared, and subsequently plays that room's message.

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lemonie

8 years ago

Why not just have different tracks in each room?
Or local-radio the tunes?

L