Pwm audio high pitch hiss/whine

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winnston84
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Pwm audio high pitch hiss/whine

Post by winnston84 » Sat Feb 25, 2017 3:51 am

I've done the Pwm audio and filter and have a high pitch hissing sound on my audio. In a quick play around I noticed when I touch the 25v 10uF capacitor with something metal (like my tweezers) the hiss stopped.

Before I start redoing everything to fix, and possibly switch to usb audio, is there something simpler I can do here that this is signifying?

oxy93n
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Re: Pwm audio high pitch hiss/whine

Post by oxy93n » Sat Feb 25, 2017 4:20 am

try ad to config.txt

Code: Select all

disable_audio_dither=1

winnston84
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Re: Pwm audio high pitch hiss/whine

Post by winnston84 » Sat Feb 25, 2017 4:24 am

Yeah I've put that line in, made no discernible difference

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