As Didier should be able to play song and speak load enough to able to play in the street

HF system

There is shure audio recever, so I can speak for the robot, it is wired with an octaver pitch so I can make a more robotic voice

Speaker system

I first took the audio part from a LD system :

https://www.woodbrass.com/sonorisations-portables-ld-systems-ldrj8-enceinte-bluetooth-sur-batterie-avec-mixeur-intgr-p244911.html

A small audio mixer

https://www.thomann.de/fr/the_t.mix_micromix_2_usb.htm

Alpine amplifier

https://www.feuvert.fr/amplificateur/alpine-amplificateur-alpine-pdx-m12/p762249.html

Noise problems

i currently have a lot of noise problem, it seems to come from the raspberry.

It is probably to ground problems from power or usb inputs