thanks but the cut off frequency would have to be too low to get rid of it. the buzzing is likely coming from one of the toy's signal diodes picking up some rf from the analog filter. i would try to isolate the digital chip with rf shield, but the circuit is a mess in there....too much work i' m afraid. thats why i'm selling it.
so i went back in to see if i could isolate the buzzing with rf shield, but unfortunately the circuit was too messy to pull apart. so i went with your idea and added some filter caps. it wworked out pretty well. you can still hear a slight buzzing but its not nearly as bad. check out the response clip.
very cool
MyOldRetro 3 months ago
2:20 to 2:34 the music is from risky beesness
ruggedslim2424 1 year ago
Comment removed
ruggedslim2424 1 year ago
If you added a low pass filter you could probably get rid of that buzz.
qracl3 1 year ago
@qracl3
thanks but the cut off frequency would have to be too low to get rid of it. the buzzing is likely coming from one of the toy's signal diodes picking up some rf from the analog filter. i would try to isolate the digital chip with rf shield, but the circuit is a mess in there....too much work i' m afraid. thats why i'm selling it.
noystoise 1 year ago
@qracl3
so i went back in to see if i could isolate the buzzing with rf shield, but unfortunately the circuit was too messy to pull apart. so i went with your idea and added some filter caps. it wworked out pretty well. you can still hear a slight buzzing but its not nearly as bad. check out the response clip.
noystoise 1 year ago