The sound from the speaker makes a loop with the microphone
Temporary solution, using an iPhone (which has an algorithm for echo cancelling)
Paper and tape prototype, very light collar holding a (heavy) iPhone
electronic
Electronic – attaching electronic to the collar
The collar
Handeling the size and weight
Using “heat sheath” to protect circuits
Sound wasn’t good enough therefore I rebuilt a speakerbox
Electronic, fail – bluetooth burnt
Electronic – Noise reduction
I had to use a coaxial cable between my bluetooth handset and the audio amplifier to reduce the noise made by the mobile phone waves.
Problem:
[youtube:http://www.youtube.com/watch?v=pVaJwy4SzU8]
Solved:
Electronic – first tinkering
Bought a bluetooth handset,
Opened it,
Wired a very first version of my circuit,
Power supply + sound amplification + big speaker,
Testing the bluetooth connection to the phone.
Thanks to Théo Reichel, technology superviser.
http://www.complex.ch/ – modprobe.complex.ch
[youtube:http://www.youtube.com/watch?v=NzUsNqKdg5o]
