buzz sound

[ms]

Hi
just received the audio hacker (thx).
i tested simple examples (reversesample & echo) with an ipod connected to the input + headphone to the output on a UNO.
i keep hearing a constant buzz sound in the output (when bypass is off). even when i switch off the sound.
very annoying and unusable..

any idea of what it’s be? (ground? software pb?)
thanks

• This topic was modified 3 weeks ago by ms.

[Michael]

Try a different output, like a 3.5mm line to a computer.
How many conductors are on the headphone plug? If there are 4 (like those that have a microphone), it won’t work. It expects a 3 conductor (tip, ring, sleeve or TRS) plug.

[ms]

Hi,
thanks for the answer,
but i’ve tried with a standard 3.5mm mini jack (with only 3 conductors) and i still have this buzz.
the buz is always there , even when the input is disconncted.
what is strange, is that its not the same buzz whether i power the arduino with a USB cable on a PC (its like a light squeek with some kinda loop), as with a 5V power its a buzz close to a white noise (but not exactly).
and when i manipulate the whole with my hand, it change the sound.
looks like a HW pb to me, ground or crosstalk of interference…

anyway i could not find a way to get a clean sound in the output.
if you have ideas.

thanks.

[Author]

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