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Buzzing/Crackling Samsung Headphones with Built-in Mic: Laptop vs Broadband Scanner Issue

zlota_raczka 4167 11
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  • #1 16875058
    zlota_raczka
    Level 13  
    Posts: 61
    Help: 10
    Rate: 25
    Hello colleagues, I have a problem with the buzzing / crackling of the phone headphones is a built-in microphone - Samsung. When connected to a laptop, everything is fine but as soon as I connect the broadband scanner, the headphones start to go crazy ... I used to have two pairs and one connected to a laptop and the other pair just to the scanner. I decided to buy a splitter and used this solution on one headphone. I'm afraid something might happen with the headphones, that's why I'm writing this post and I'm asking you for help. Why is this happening and what to do about it?

    Added after 4 [minutes]:

    Oh, and one more thing
    The buzzing begins when connected to a laptop. Because I checked and the scanner itself works on 5 but when I connect to a laptop, the humming starts
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  • #2 16875192
    michalek1988
    Level 26  
    Posts: 673
    Help: 68
    Rate: 179
    The minijack plug you have for your headphones with a microphone has 4 "3 rings and 1 tip" in the plug? If so then you have a combojack connector. If you only have a headphone and only a microphone input in your laptop, maybe the only way would be to buy a special adapter that separates them and use only a stereo mini jack?
  • #3 16875232
    zlota_raczka
    Level 13  
    Posts: 61
    Help: 10
    Rate: 25
    Dude, I only have three rings. Red and green plug. Whereas in the headphones there are 4 ring ones

    Added after 1 [minutes]:

    in the laptop there are two for headphones and the other for microphone
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  • #4 16875347
    michalek1988
    Level 26  
    Posts: 673
    Help: 68
    Rate: 179
    You get a plug like this from your headphones: Buzzing/Crackling Samsung Headphones with Built-in Mic: Laptop vs Broadband Scanner Issue
    If so, then you need something like this:
    Buzzing/Crackling Samsung Headphones with Built-in Mic: Laptop vs Broadband Scanner Issue

    I have improved the way of placing graphics.
    RADU23
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  • #5 16875364
    zlota_raczka
    Level 13  
    Posts: 61
    Help: 10
    Rate: 25
    Buddy, I bought it, I already have it

    Added after 43 [seconds]:

    Buzzing/Crackling Samsung Headphones with Built-in Mic: Laptop vs Broadband Scanner Issue
    I made such a preview drawing ;)

    Added after 45 [minutes]:

    Can anyone help ?
  • #6 16875851
    krzychupar
    Level 43  
    Posts: 6807
    Help: 1490
    Rate: 633
    To connect the audio output from a computer and the audio from a frequency scanner, it would be more useful to use an adder than a splitter. Because such connection methods as you have come up with does not apply, because one will always interfere with the other.
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  • #7 16875878
    michalek1988
    Level 26  
    Posts: 673
    Help: 68
    Rate: 179
    Green jack is headphones, pink is microphone, it doesn't matter what and how you connect. Take photos of your connections, and write what you want to get through this connection. Please correct me if I misunderstood you, but you mean the possibility of using a scanner and listening to the laptop at the same time?
  • #8 16875992
    zlota_raczka
    Level 13  
    Posts: 61
    Help: 10
    Rate: 25
    Colleagues want to hear the sound from the computer and the scanner on one headphone
  • #9 16875999
    michalek1988
    Level 26  
    Posts: 673
    Help: 68
    Rate: 179
    Without broadcasting? The easiest way would be to make a left channel laptop, right scanner or vice versa. Then you need an adapter with 2 mono mini jack plugs (or stereo using 1 channel) and a stereo socket, in which you connect the green plug from your adapter. You can buy, you can solder yourself or ask someone who knows how to do it to you.
  • #10 16876004
    zlota_raczka
    Level 13  
    Posts: 61
    Help: 10
    Rate: 25
    yes without broadcasting
  • #11 16876005
    krzychupar
    Level 43  
    Posts: 6807
    Help: 1490
    Rate: 633
    You have nothing to combine as I wrote, with such a connection you will always have interference. Maybe to try to separate these two signals with 4.7uF electrolytic capacitors.
  • #12 16876006
    zlota_raczka
    Level 13  
    Posts: 61
    Help: 10
    Rate: 25
    How does it look like?

    Added after 1 [minutes]:

    I noticed that when I put the headphones to the very end, one thing stops working
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Topic summary

✨ The discussion revolves around issues with buzzing and crackling sounds in Samsung headphones with a built-in microphone when connected to a broadband scanner, while functioning normally with a laptop. Users suggest that the problem may stem from the type of audio jack used, indicating that a combo jack (4-ring) is incompatible with separate headphone and microphone inputs (3-ring) on the laptop. Recommendations include using a splitter or an adder to manage audio signals from both devices, with some users proposing the use of capacitors to reduce interference. The goal is to achieve simultaneous audio output from both the laptop and the scanner without broadcasting.
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FAQ

TL;DR: A 4‑pole TRRS phone headset tied to two 3‑pole outputs hums; “one will always interfere with the other.” Use a mixer/adder or split channels instead. [Elektroda, krzychupar, post #16875851]

Why it matters: This FAQ helps scanner listeners fix buzzing/crackling when using Samsung-style mic headsets with laptops and broadband scanners.

Quick Facts

Why do my Samsung TRRS headphones buzz when I connect laptop and scanner with a splitter?

A basic Y‑splitter ties two active outputs together. Their grounds and signals fight, causing hum, crackle, or level pumping. Use an adder/mixer or isolate channels instead. As one expert put it, “one will always interfere with the other.” [Elektroda, krzychupar, post #16875851]

What adapter do I need for a phone headset on a laptop with separate jacks?

Get a TRRS (4‑ring) to dual TRS breakout. It splits the combo headset into green headphones and pink mic plugs. This matches phone-style headsets to laptops with separate inputs. [Elektroda, michalek1988, post #16875347]

Can I listen to my laptop and a broadband scanner on one headset at the same time?

Yes. The simplest passive method is channel splitting: send the laptop to the left channel and the scanner to the right. Use an adapter that feeds each mono source to one stereo side. [Elektroda, michalek1988, post #16875999]

What is TRRS vs TRS in plain terms?

TRRS has four contacts (tip, ring, ring, sleeve) for stereo plus mic. TRS has three contacts for stereo only. Phone headsets are TRRS; many PCs expose separate TRS jacks. [Elektroda, michalek1988, post #16875192]

How do I wire the left/right split method?

  1. Feed the laptop’s headphone out to the stereo plug’s left pin.
  2. Feed the scanner’s audio out to the right pin.
  3. Connect grounds together to the sleeve, then plug into the green headphones jack. [Elektroda, michalek1988, post #16875999]

Will a plain Y‑splitter harm my devices or headphones?

It risks distortion and could stress output stages when two sources back‑drive each other. Symptoms include buzzing and crackling that worsen with volume. Use a mixer or true adder to be safe. [Elektroda, krzychupar, post #16875851]

Can capacitors reduce the hum when combining outputs?

Yes. Insert approx. 4.7 µF electrolytic capacitors in series with each source’s signal. This blocks DC interaction and reduces low‑frequency hum. Observe polarity if used. [Elektroda, krzychupar, post #16876005]

Why does the buzzing start only when I connect the laptop?

The laptop’s output shares the splitter with the scanner, creating a conflict. When you add the laptop, the combined outputs start humming. Alone, the scanner sounds fine. [Elektroda, zlota_raczka, post #16875058]

What do the green and pink 3.5 mm PC jacks mean?

Green is the headphone/speaker output. Pink is the microphone input. Connect the headset’s audio to green and the mic to pink via the proper TRRS breakout. [Elektroda, michalek1988, post #16875878]

My plug has four rings but my PC has two jacks—what should I buy?

Buy a TRRS headset splitter that breaks out to separate stereo headphones (green) and mic (pink). This is the correct adapter for Samsung‑style headsets. [Elektroda, michalek1988, post #16875347]

Half‑inserting the plug kills one source—what does that mean?

It shifts which contacts touch inside the jack. You may lose a channel or mic when the plug is not fully seated. This indicates a contact or wiring mismatch. [Elektroda, zlota_raczka, post #16876006]

Can I broadcast with this setup, or is it listen‑only?

The discussed setup is receive‑only. A suggested method routes laptop audio to one ear and scanner to the other, without any RF transmission. [Elektroda, michalek1988, post #16875999]
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