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Local and Stream Sound Echo
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Joined: 8/16/2019(UTC) Posts: 346 Thanks: 75 times Was thanked: 22 time(s) in 17 post(s)
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Hello everyone,
I'm currently dealing with a minor issue and was hoping to get some assistance. I've got two sets of wireless microphones (handheld and lapel) and a basic mixer that allows me to input audio.
Here's my setup: I take the output from the mixer (which only has a single output) using a phono to jack cable and connect it to my PC so that vMix can capture the mixed audio. Then, I take the PC's output and feed it into the local venue's PA system to ensure everyone in the venue can hear.
However, it seems that only those in the venue are experiencing an echo issue, while viewers at home have no such problems. I'm wondering if anyone has any suggestions on how to eliminate this echo for the local venue audience while still being able to stream the live broadcast so that viewers at home can hear clearly.
One idea I had was to purchase another mixer that has both USB and phono outputs. The USB would connect to the PC for the sound, and the other output (phono to jack) would go directly into the venue's PA system, I'm sure this would work but I don't have a system like that to test.
I appreciate any advice or insights you can provide. Thanks in advance for your help.
Sims.
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Rank: Newbie
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Joined: 1/4/2021(UTC) Posts: 5 Was thanked: 1 time(s) in 1 post(s)
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Originally Posted by: Simsyuk Hello everyone,
I'm currently dealing with a minor issue and was hoping to get some assistance. I've got two sets of wireless microphones (handheld and lapel) and a basic mixer that allows me to input audio.
Here's my setup: I take the output from the mixer (which only has a single output) using a phono to jack cable and connect it to my PC so that vMix can capture the mixed audio. Then, I take the PC's output and feed it into the local venue's PA system to ensure everyone in the venue can hear.
However, it seems that only those in the venue are experiencing an echo issue, while viewers at home have no such problems. I'm wondering if anyone has any suggestions on how to eliminate this echo for the local venue audience while still being able to stream the live broadcast so that viewers at home can hear clearly.
One idea I had was to purchase another mixer that has both USB and phono outputs. The USB would connect to the PC for the sound, and the other output (phono to jack) would go directly into the venue's PA system, I'm sure this would work but I don't have a system like that to test.
I appreciate any advice or insights you can provide. Thanks in advance for your help.
Sims. I think the echo you are experiencing within the venue is the speakers coming back into the microphones that you are using. Especially if the venue is a hall with no carpet and hard floors/walls. You could try moving the speakers further away from the Mic and apply a noise gate to the microphone. Hope this helps
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Rank: Advanced Member
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Joined: 5/13/2014(UTC) Posts: 518 Location: Manchester, UK Thanks: 2 times Was thanked: 183 time(s) in 130 post(s)
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Originally Posted by: Simsyuk I take the output from the mixer (which only has a single output) using a phono to jack cable and connect it to my PC so that vMix can capture the mixed audio.
One idea I had was to purchase another mixer that has both USB and phono outputs. The USB would connect to the PC for the sound, and the other output (phono to jack) would go directly into the venue's PA system No need to get a different mixer if that's what you want to try - just get a splitter cable or adapter for the existing analogue out. Mixer outputs are normally designed to cope with being connected to multiple input loads - unlike video outputs where it's strictly 1-to-1. The echo, if it's in the form of a repeated delay, is possibly caused by the fact that vMix adds a small delay to the audio, so if a bit of the PA output is picked up by the mics you will get an audible echo effect before you get total feedback/howl-round. With a direct connection from mixer to PA, you're more likely just get howl-round from having too much "loop gain" rather than going through the phase of audible echo.
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Joined: 10/31/2020(UTC) Posts: 144 Thanks: 2 times Was thanked: 28 time(s) in 28 post(s)
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I agree with zenvideo. The reason you hear an echo is because the audio output from the PC is delayed. Just split the output from the mixer, and there won't be a delay.
You might not even have to split the output. Most mixers have multiple outputs. A "main out", usually XLR or 1/4" jack. And a "tape out", usually RCA. You could use one output for the PC, and the other output for the PA system.
What mixer do you have?
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Rank: Advanced Member
Groups: Registered
Joined: 8/16/2019(UTC) Posts: 346 Thanks: 75 times Was thanked: 22 time(s) in 17 post(s)
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Thanks for all the responses and suggestions. I followed my own idea and visited Facebook Marketplace and acquired a second-hand Behringer Xenyx Q502USB mixer for the incredibly low price of £10. I put it to the test this morning by connecting the USB to vMix (input of course), and I'm pleased to report that everything worked flawlessly.
I then used the phono output to my desktop speakers, and that also went off without a hitch, no echo (just had to change the USB delay to get it right).
I truly appreciate all the helpful ideas you provided. I've taken the liberty of printing out your suggestions (ordered a splitter cable) and placed them in my equipment case, just in case I encounter any issues while out on location. Your assistance has been invaluable, and I can't thank you enough.
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