Speaker has a static sound

[Cyberlane]

When the device turns on, it activates the power to the speaker which makes it give off a static sound until a tune is being played.

Try modify the library to turn off the speaker until a moment before it's going to play something, and then turn it off again when that is done.

[Cyberlane]

I think the solution would be to change void Kidspeak::init(void) the following

pinMode(2, OUTPUT);

into INPUT

then on Kidspeak::_play_tone before anything else to add

pinMode(2, OUTPUT);

and then after everything, to add again

pinMode(2, INPUT);

Essentially this will remove the power from the speaker when it's not in use, which should remove the static sound.
@voigtan maybe you would like to try this? I haven't got a device unpacked yet to test it out - but I think this will work.

[voigtan]

I will look into this