NC earphones not really NC-ing - Xperia Z2 Accessories

I'm using those earphones but can't make them actually noise cancel anything really.
I've tried using them near a fan, engine, centrifuge, window, air - conditioner, anything with really stable and usually really cancellable noise, but the earphones don't really cancel and sometimes even produce crackling or other distortion sounds and break the experience of listening to music or voice.
Has anyone else experienced this kind of behavior?
Sent from my D6503 using XDA Premium 4 mobile app

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Do you turn on the NC function on the settings menu?? It's on the user manual page 42
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Really? Of course I did.
Sent from my LG-D855 using XDA Premium 4 mobile app

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What did you expect? Silence?
Noise cancelation just reduces the surrounding noise a tiny bit.
The first time I plugged the headphones in I accidentally deactivated NC by activating Stereo Mic, and when I used the earplugs I was like "wow, nearly no outside noise" because my old ones let nearly everything trough.
Then when I first activated NC in the settings I couldnt find a big difference, I think the most effective is in a train with lots of people talking. There it seems to work kinda well.

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toncij said:
I'm using those earphones but can't make them actually noise cancel anything really.
I've tried using them near a fan, engine, centrifuge, window, air - conditioner, anything with really stable and usually really cancellable noise, but the earphones don't really cancel and sometimes even produce crackling or other distortion sounds and break the experience of listening to music or voice.
Has anyone else experienced this kind of behavior?
Sent from my D6503 using XDA Premium 4 mobile app
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It worked really well with paper smashing next to me for a test or sitting on a bus... i was impressed how effective it was.
But im using Xears earphones, the NC headset sound quality its very poor.

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These are good at blocking because of quality earpiece, but NC part is far from NC headphones I've tried from other manufacturer, can't remember which one atm. There, I didn't hear any of repetitive noise I've tested these with.
I had high hopes that I'll at least be able to not hear ventilation shaft noise and other office noises that perfectly fit NC usage (constant, regular, repetitive...)
Sent from my HTC One_M8 using XDA Premium 4 mobile app

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toncij said:
These are good at blocking because of quality earpiece, but NC part is far from NC headphones I've tried from other manufacturer, can't remember which one atm. There, I didn't hear any of repetitive noise I've tested these with.
I had high hopes that I'll at least be able to not hear ventilation shaft noise and other office noises that perfectly fit NC usage (constant, regular, repetitive...)
Sent from my HTC One_M8 using XDA Premium 4 mobile app
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What matters is not how repetitive the noise is, but what frequencies it covers. Most active noise cancelation even in high-end headphones like Sennheiser covers a pretty narrow frequency range.
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