I have a small issue using the EZ-B soundboard and just wondered if anyone experienced this and possibly has a fix. When I play sound files there is a rather annoying hiss in the background.
When I play the sound files directly through a media player on my PC, perfect.
When I use SayEZB() or Pandorabot control, perfect.
But any sound file played through the EZ-B soundboard the background hiss returns. Not a major problem but I would like to eliminate this if I could. Is it possible?
Upgrade to ARC Pro
Synthiam ARC Pro is a cool new tool that will help unleash your creativity with programming robots in just seconds!
Try using Audacity (it's free) to remove hiss and see if it gives better results.
Funnily enough the sound files I created where done using Audacity so it's not the MP3 quality, and any other audio such as SayEZB() ect are crystal clear.
With the first stage audio breakout the music should be very clean. The reason your are likely seeing the voices come out clean is likely because voice is in a limited frequency range where as music is in a broader range.
A couple things to check:
Is the gain set pretty high on your external amplifier or is it just volume adjust?
Is your audio cable shielded?
Have you tried reflowing your solder joints with a bit of flux?
Thanks for responding. I don't have a separate amplifier as the speaker has one built in, so no gain control, just a volume wheel which is set to medium level. The audio cable is shielded. It came from an old pair or headphones. And the solder I used had a flux core mix so there shouldn't be a problem there.
Thanks for that. Coming to think of it that does make sense. I will give the grounding a try.