synchronize speaker

need a station or the control center (a laptop) be the transmitter
wireless receiver on speaker

http://www.chinasoyo.com/enProductShow.asp?ID=113&gclid=CLL79fzw9ZQCFQxNegodQgN3qw

just like wireless mic. We set our channel on certain frequency range.
I find there are many different kind of transmitter using infra, bluetooth, wifi…etc.

need to estimate: (may need a trip in Shum Shui Po)
1.the budget.
2.the quality of audio we wish and we can get
- we will probably have a lot of interference during data transmission
3. the max distance of the transmitter ( depends on the quality / the price of our apparatus)
- this will determine the form/ distance of our speaker crew, how we mobile with the transmitter (the control center)
- the one in the link has 100 m transmission range
- the sensitive of transmitter and receiver
4.what kind of speaker to use
even it is possible to use a earphone(there is micro-speaker inside)
5. Safety
last but not the least
if we place the speaker and our head in the box together
- how we disperse heat, to avoid heat stroke
- avoid electric stroke
- will it be too heavy to wear on the head?
(this determine how we design our costume.)

………..need furhter update and review

wireless speaker concept
http://www.cameraphonesplaza.com/wireless-speaker-system-concept/

bluetooth…connection can further enable on mobile phone in a later phrase or version if you like.