Hi Dear Locustreamers,
Since a while I am trying to get a good quality out of the combination of a Zero Pi W with IQaudIO card I am running it over my wifi net since there is no phone connection anyway in many places around And for testing I run it on the normal electricity grid.. but I will make a battery/solarcharge unit soon…
So, I had no problems configuring the thing like indicated on the locusonus website, it is really neat and easy and well documented (Thanks for that! Beautiful!) Also the file “Streambox-Off-grid-with-IQ-Audio-Code-Zero-and-solar-Summer-2021” was helpful… The system itself is running quite stable for a couple of weeks now, but I am having major problems with the electret microphones
But when I connect any electret microphone pair to the stereo plug, there is an annoying digital rhythmical click/tik/noiseburst in the sound I tested some self-built pair and also a pair I bought some time ago, the EM272 microphones are fine and are by themselves providing a clear sound And not so much noise.. compared to the built-in MEMS which are rather noisy! But these rhythmical clicks are quite bad and irritating after a while!
(I think Golo is on this list too and he is having the same problem, He thinks it has to do with interference from the modem But mine is really far away.. and moving closer or further does not change anything to it… )
Now, I played around a little and noticed that when I change input to the MEMs the digital click is still there until I disconnect the electrets… Actually when I simply plug a minijack without cable in the connector, I hear the clicks again! Finally, I was thinking of streaming binaural, and connected a HR-VR zoom line output to it with a minijack, and … THE CLICKS ARE GONE!
So now I am wondering what the solution could be… I am not an engineer or have any of these skills, but first I thought it was the ADC on the card That was doing the bad job, but since it is working perfectly with a line in from the H3VR (btw - the binaural stream adds a nice spatial aspect), Maybe it is the signal itself from the electrets and how it is handled on the IQaudIO - do I need to solder resistors and capacitors between pins or what can I do?
Help!
~G
Ps the stream is currently at: http://locus.creacast.com:9001/mobile_kra.ogg
Hi Givan …
So now I am wondering what the solution could be…
I am (was) struggling with some of these problems too
I found a nice solution with the use of a RASP zero & Raspberry Pi Shield - HiFi Stereo Sound-HAT, WM8960
( https://www.waveshare.com/wm8960-audio-hat.htm )
It has 2 MEMS mic’s on board
I had it running as test ( backup ) lats REVEIL and it worked great
I think the sound is OK ( my other set with dynamic mic’s and USB interface ) sounds better … but is sounds OK in my opinion
I used a baffle to make the stereo image wider
I did not used the Sonus image, had a own icecast server running on the rasp
Easy & cheap ( +/- 40€ to have it running )
Grtz,
W.
Yes Ward, I was reading this with interest before
There you wrote also “I had only to add an extra 1000µF condenser on the 5V ( pin 1&3 ) to get rid of some annoying soft crackling sound."
Would that be a solution for us on the IQaudIO as well? What does it do really??? Can we try without setting the house on fire?
Thanks G
On 26 May 2022, at 10:25, ward@planktone.be ward@planktone.be wrote:
Hi Givan …
So now I am wondering what the solution could be…
I am (was) struggling with some of these problems too I found a nice solution with the use of a RASP zero & Raspberry Pi Shield - HiFi Stereo Sound-HAT, WM8960 ( https://www.waveshare.com/wm8960-audio-hat.htm https://www.waveshare.com/wm8960-audio-hat.htm ) It has 2 MEMS mic’s on board I had it running as test ( backup ) lats REVEIL and it worked great I think the sound is OK ( my other set with dynamic mic’s and USB interface ) sounds better … but is sounds OK in my opinion I used a baffle to make the stereo image wider
<image001.jpg>
I did not used the Sonus image, had a own icecast server running on the rasp
Easy & cheap ( +/- 40€ to have it running )
Grtz,
W.
Locustream / Locus Sonus Streaming Project http://locusonus.org/ http://locusonus.org/ To unsubscribe, send a message to locustream-request@nujus.net mailto:locustream-request@nujus.net with unsubscribe in the subject or follow instructions here https://nujus.net/cgi-bin/mailman/options/locustream https://nujus.net/cgi-bin/mailman/options/locustream _______________________________________________
…
This cap reduced some disturbing noises in my setup.
I think a lot has to do with the power supply used.
Some generate more or less noise
I use a DC-DC convertor these days and and external DIY power supply ( or a 12v 7.2 Ah battery for +/- 24 hours )
Your stream is now ok, but mono …
w.
Van: Locustream locustream-bounces@nujus.net Namens Gívan Belá Verzonden: donderdag 26 mei 2022 10:30 Aan: locustream@locusonus.org Onderwerp: Re: [locustream mailing list] Another question Zero Pi W + IQaudIO + elektrets: annoying clicks/noise
Yes Ward, I was reading this with interest before
There you wrote also
“I had only to add an extra 1000µF condenser on the 5V ( pin 1&3 ) to get rid of some annoying soft crackling sound."
Would that be a solution for us on the IQaudIO as well?
What does it do really???
Can we try without setting the house on fire?
Thanks
G
Hi, i had the same problems when i used the mic input. The final solution for me was to use a smal mixer whit the primo mics, connected to the line input.Listen here ( lot of wind now):https://wijnandbredewold.nl/LIVESTATIONRegards, Wijnand -------- Oorspronkelijk bericht --------Van: Gívan Belá xgz@societyofalgorithm.org Datum: 26-05-2022 09:56 (GMT+01:00) Aan: locustream@locusonus.org Onderwerp: [locustream mailing list] Another question Zero Pi W + IQaudIO + elektrets: annoying clicks/noise Hi Dear Locustreamers, Since a while I am trying to get a good quality out of the combination of a Zero Pi W with IQaudIO cardI am running it over my wifi net since there is no phone connection anyway in many places around And for testing I run it on the normal electricity grid.. but I will make a battery/solarcharge unit soon… So, I had no problems configuring the thing like indicated on the locusonus website, it is really neat and easy and well documented(Thanks for that! Beautiful!) Also the file “Streambox-Off-grid-with-IQ-Audio-Code-Zero-and-solar-Summer-2021” was helpful…The system itself is running quite stable for a couple of weeks now, but I am having major problems with the electret microphonesBut when I connect any electret microphone pair to the stereo plug, there is an annoying digital rhythmical click/tik/noiseburst in the soundI tested some self-built pair and also a pair I bought some time ago, the EM272 microphones are fine and are by themselves providing a clear soundAnd not so much noise.. compared to the built-in MEMS which are rather noisy! But these rhythmical clicks are quite bad and irritating after a while! (I think Golo is on this list too and he is having the same problem, He thinks it has to do with interference from the modem But mine is really far away.. and moving closer or further does not change anything to it… )Now, I played around a little and noticed that when I change input to the MEMs the digital click is still there until I disconnect the electrets… Actually when I simply plug a minijack without cable in the connector, I hear the clicks again! Finally, I was thinking of streaming binaural, and connected a HR-VR zoom line output to it with a minijack, and … THE CLICKS ARE GONE! So now I am wondering what the solution could be… I am not an engineer or have any of these skills, but first I thought it was the ADC on the cardThat was doing the bad job, but since it is working perfectly with a line in from the H3VR (btw - the binaural stream adds a nice spatial aspect), Maybe it is the signal itself from the electrets and how it is handled on the IQaudIO - do I need to solder resistors and capacitors between pins or what can I do? Help! ~GPs the stream is currently at: http://locus.creacast.com:9001/mobile_kra.ogg
Hi
A few (other) things to try if you are having clicks..
-- Improve shielding and grounding of the microphones, I use 2 x 2-strand shielded cable, connecting the positive and negative wires to the pads on the capsules and connecting the combined shield to the ground point in the plug. I wrap each capsule itself in foil connected to the shield. The last part is described by Tom Benedict (for a slightly different setup) here: https://tombenedict.wordpress.com/2016/03/05/diy-microphone-em172-capsule-an.... Others have had different experiences, but I found this gives the best insurance against EMI in various streaming situations. It solves the clicks that I had with a hastier mic setup.
-- The clicks are likely to come from the WiFI, especially if the network is not strong, and the Pi is increasing the WiFi signal to work with it (I think). It can be worth moving the location. It can sometimes make a difference if you relocate the pi in whatever enclosure you are using, and sometimes if you use antistatic film (such as the pi's arrive in) as a shield.
-- If really stuck, you can run the pi and iqaudiocard very nicely via ethernet and/or poe using this adaptor: https://thepihut.com/products/poe-to-micro-usb-adapter-for-pi-zero-ethernet-...
bw grant
On 26 May 2022, at 09:51, wijnand.bredewold wijnand.bredewold@kpnmail.nl wrote:
Hi, i had the same problems when i used the mic input. The final solution for me was to use a smal mixer whit the primo mics, connected to the line input. Listen here ( lot of wind now): https://wijnandbredewold.nl/LIVESTATION
Regards, Wijnand
-------- Oorspronkelijk bericht -------- Van: Gívan Belá xgz@societyofalgorithm.org Datum: 26-05-2022 09:56 (GMT+01:00) Aan: locustream@locusonus.org Onderwerp: [locustream mailing list] Another question Zero Pi W + IQaudIO + elektrets: annoying clicks/noise
Hi Dear Locustreamers,
Since a while I am trying to get a good quality out of the combination of a Zero Pi W with IQaudIO card I am running it over my wifi net since there is no phone connection anyway in many places around And for testing I run it on the normal electricity grid.. but I will make a battery/solarcharge unit soon…
So, I had no problems configuring the thing like indicated on the locusonus website, it is really neat and easy and well documented (Thanks for that! Beautiful!) Also the file “Streambox-Off-grid-with-IQ-Audio-Code-Zero-and-solar-Summer-2021” was helpful… The system itself is running quite stable for a couple of weeks now, but I am having major problems with the electret microphones
But when I connect any electret microphone pair to the stereo plug, there is an annoying digital rhythmical click/tik/noiseburst in the sound I tested some self-built pair and also a pair I bought some time ago, the EM272 microphones are fine and are by themselves providing a clear sound And not so much noise.. compared to the built-in MEMS which are rather noisy! But these rhythmical clicks are quite bad and irritating after a while!
(I think Golo is on this list too and he is having the same problem, He thinks it has to do with interference from the modem But mine is really far away.. and moving closer or further does not change anything to it… )
Now, I played around a little and noticed that when I change input to the MEMs the digital click is still there until I disconnect the electrets… Actually when I simply plug a minijack without cable in the connector, I hear the clicks again! Finally, I was thinking of streaming binaural, and connected a HR-VR zoom line output to it with a minijack, and … THE CLICKS ARE GONE!
So now I am wondering what the solution could be… I am not an engineer or have any of these skills, but first I thought it was the ADC on the card That was doing the bad job, but since it is working perfectly with a line in from the H3VR (btw - the binaural stream adds a nice spatial aspect), Maybe it is the signal itself from the electrets and how it is handled on the IQaudIO - do I need to solder resistors and capacitors between pins or what can I do?
Help!
~G
Ps the stream is currently at: http://locus.creacast.com:9001/mobile_kra.ogg http://locus.creacast.com:9001/mobile_kra.ogg_______________________________________________ Locustream / Locus Sonus Streaming Project http://locusonus.org/ To unsubscribe, send a message to locustream-request@nujus.net with unsubscribe in the subject or follow instructions here https://nujus.net/cgi-bin/mailman/options/locustream _______________________________________________
locustream@lists.locusonus.org
-
Grant Smith -
Gívan Belá -
ward＠planktone.be -
wijnand.bredewold