Reset trigger "pops" Audio Output

[hankyates]

Hi there,

For whatever reason it sounds like DC is leaking into the audio output from the reset. Any advice for trouble shooting this?

I suspect that maybe there is a capacitor or diode somewhere that isn't doing it's job, but I am unsure of which component.

[hankyates]

Did some more investigation last night. I resoldered all capacitors which did not fix the popping. I noticed that the popping seems to be get louder as the audio signal from the DAC gets louder. Leading me to think this might be a software issue. I tried setting the "declick" setting but this didn't resolve the issue either.

[Thonk-Steve]

Hi Hank,

Can you upload a direct recording of how this click sounds?

Thanks

Steve Thonk

On Mon, 31 Dec 2018, 16:06 Hank Yates <notifications@github.com wrote:

Did some more investigation last night. I resoldered all capacitors which did not fix the popping. I noticed that the popping seems to be get louder as the audio signal from the DAC gets louder. Leading me to think this might be a software issue. I tried setting the "declick" setting but this didn't resolve the issue either.

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[christophebruynseels]

Hi, I am having the same problem. Whenever i reset the sample it clicks in and out. I tried to attenuate the cv but that didn t help, also tried different settings in the software but nothing seems to help.

chris

[Thonk-Steve]

Hi Chris, same request as for Hank then, it's best if you can upload some recordings. Also do you have an oscilloscope? It would be useful to check you don't have a DC offset in your system which is a common cause of clicks.

On Wed, 17 Apr 2019, 16:24 christophebruynseels, notifications@github.com wrote:

Hi, I am having the same problem. Whenever i reset the sample it clicks in and out. I tried to attenuate the cv but that didn t help, also tried different settings in the software but nothing seems to help.

chris

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[hankyates]

Hey Steve I'll get you some audio but I did check with an oscilloscope couldn't find any DC leaking. It's pretty strange because it doesn't appear in the audio peak waveforms either.

On Wed, Apr 17, 2019, 11:41 AM Thonk-Steve notifications@github.com wrote:

Hi Chris, same request as for Hank then, it's best if you can upload some recordings. Also do you have an oscilloscope? It would be useful to check you don't have a DC offset in your system which is a common cause of clicks.

On Wed, 17 Apr 2019, 16:24 christophebruynseels, <notifications@github.com

wrote:

Hi, I am having the same problem. Whenever i reset the sample it clicks in and out. I tried to attenuate the cv but that didn t help, also tried different settings in the software but nothing seems to help.

chris

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.

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[hankyates]

@mercurialization could you post an audio sample?

[jacoblysgaard]

I have the same problem. Here is an audio recording where it should be quite pronounced.

https://soundcloud.com/lysgaardsounds/radiomusic-clicks/s-tfgHjwRkvpf

[gogoha]

Same problem on 3 Radio music modules, i have tried with two quality SD cards, and attenuated trigger signal but no differences. Now I want to test older firmware (PSU3 doepfer)

[klendroid]

@TomWhitwell @Thonk-Steve

Having this exact issue as well. Here's a recording: https://soundcloud.com/user-292410369/radiomusicnoise

Did you guys figure it out?

[jacoblysgaard]

We did not!😭

[klendroid]

Bummer! I have to say, I get the distortion all the time though, not just when pressing reset. It's always there.

[klendroid]

I tried a different SD-card now, and tried to load in only the default RAW-files from the 8GB pack thing found here: https://github.com/TomWhitwell/RadioMusic/wiki/Audio-for-the-SD-Card

... and now it works just fine! No distortion or glitching. :)

[jacoblysgaard]

I tried just this, but even with the stock .raw files, I still get the same pops. Weird.

[Morbo78]

I have the same problem and I'm using Sandisk and Kingston 32GB cards. It seems to be a bit better with the trigger input rather than the button, but it's still there. Tried altering crossfade settings, reinstalling the firmware and settings file, reflowing solder joints...

I'm using a Befaco PowSkiff power supply, but it also does it when just connected to my FC Power, too.

Links to audio files and photos of the boards here: https://drive.google.com/drive/folders/1TVoPL_2BiNpGv0wWosxHMdvPfK_WrFkP?usp=sharing

[gogoha]

After format the card (Kingston 16Gb HC I U1 Class10) with "SD card formatter" app (overwrite format) and put the default RAW-files (uncompress directly on the sd card!!) that's work (2 hours testing).