Hello everyone
Here's my little issue. I'm building an active soundbar for my television. I have build the amplifier/controller/subfilter PCB and assembled it but I'm experiencing some problems listed below.
- Loud audible hissing from the speakers. (not 50/60Hz noise, more like a snake )
- The pin changes from the TINY IR (remote receiver) do not trigger the interrupts in the attiny2313 for volume up/down/mute on the PGA2311
Have been on my school today measuring the audio trough the system. The amplification seems to be okay, and no DC is added to the signal. I´m really getting frustrated because i can't seem to pinpoint the problem.
Hope some good soul will take a look at my schematic and PCB layout and hopefully say... Ahhh that is obvious...
Best regards and thanks
Mads, Denmark
P.S. please excuse my english... hope it makes sense.
Here's my little issue. I'm building an active soundbar for my television. I have build the amplifier/controller/subfilter PCB and assembled it but I'm experiencing some problems listed below.
- Loud audible hissing from the speakers. (not 50/60Hz noise, more like a snake )
- The pin changes from the TINY IR (remote receiver) do not trigger the interrupts in the attiny2313 for volume up/down/mute on the PGA2311
Have been on my school today measuring the audio trough the system. The amplification seems to be okay, and no DC is added to the signal. I´m really getting frustrated because i can't seem to pinpoint the problem.
Hope some good soul will take a look at my schematic and PCB layout and hopefully say... Ahhh that is obvious...
Best regards and thanks
Mads, Denmark
P.S. please excuse my english... hope it makes sense.
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