{"id":412561,"date":"2024-06-29T22:37:13","date_gmt":"2024-06-29T22:37:13","guid":{"rendered":"http:\/\/savepearlharbor.com\/?p=412561"},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-29T21:00:00","slug":"","status":"publish","type":"post","link":"https:\/\/savepearlharbor.com\/?p=412561","title":{"rendered":"Journey to find a headset with a good side talk cancellation mic for calls in an open office<\/span>"},"content":{"rendered":"
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TL;DR: All AI-based noise cancellations suck, only the physical cancellation technique works! It’s named «<\/em>beamforming microphone<\/em><\/strong>«. And physical cancellation is implemented well only in Jabra devices yet, but other features suck them! All Bluetooth headsets suck too! So, no solution yet, just complaints!<\/em><\/p>\n

The environment:<\/strong> I work in a pretty talky office room, where sit around 10 people, and all of them have many online conferences every day, including me. So, silence in the room is a rare situation.<\/p>\n

The problem:<\/strong> The main problem is that most of the microphones pick up all side talk pretty loud, which makes it very unpleasant for other people to listen to my voice in meetings!<\/p>\n

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And the journey\u2026<\/h4>\n

Station 1: Built-in laptops and webcams with microphone array<\/h3>\n
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I\u2019ve started with an old good laptop ThinkPad X240, which has a built-in microphone array with two microphones. Two mics, it would seem, should cancel side noise well, I thought\u2026 But not! All side noises are caught pretty loud, even louder than my ears hear them!<\/p>\n

And a lot of self background noise, even in a quiet room, and keyboard clicks are too loud\u2026<\/p>\n

So, this is garbage!<\/em><\/strong><\/p>\n

Maybe just the laptop is too cheap? Let\u2019s try a more expensive one?<\/strong><\/p>\n

I\u2019ve replaced my old laptop with a modern pretty expensive model HP Elitebook in the hope that it has better microphones for such a price.<\/p>\n

But the results are the same — a lot of background noise and no cancellation at all.<\/p>\n

And even more — when I\u2019m not speaking, its microphones thinks that I speak just quietly, and increase their own sensitivity, making all side sound louder. So, when I don\u2019t speak, others hear a lot of background noise.<\/p>\n

The results are the same — garbage!<\/em><\/strong><\/p>\n

Maybe an external webcam? They\u2019re made for conferences, isn\u2019t it?<\/strong><\/p>\n

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I\u2019ve bought an external webcam (Genius ECAM 8000) with 2 microphones — the results are the same! A lot of self-noise and no cancellation of side noises at all.<\/p>\n

Garbage again!<\/em><\/strong><\/p>\n

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Conclusion: Two microphones are just two microphones!<\/strong> Even an array with two microphones doesn’t give you any kind of noise cancellation at all! There is just more than one microphone, which gives you maybe some stereo effect or some other benefits, I don’t know. But canceling side noises, especially high\u2011frequency noises like plastic bag rustling\u00a0\u2014 not for them!<\/p>\n<\/blockquote>\n

Station 2: A cheap Bluetooth headset<\/h3>\n

I\u2019ve bought just a regular cheap Bluetooth headset Sony DR-BT101 — the microphone is closer to my mouth, so it should work well.<\/p>\n

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But not again! <\/em><\/strong>The same problem — other talks are heard pretty loudly! It\u2019s the same as built-in microphones in laptops.<\/p>\n

Station 3: More expensive Bluetooth headsets<\/h3>\n

Okay, maybe that headset just is too cheap? Let\u2019s try with more expensive ones.<\/p>\n

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I\u2019ve bought and tested a couple of more modern and expensive headsets: Apple Airpods, JBL FLEX — the results are similarly poor!<\/p>\n

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Limitation: The Bluetooth protocol still has no normal profile for two-sided audio!<\/strong> There is only HSP (Handset Profile) that gives low bit rate, \u201cvoice-quality\u201d audio, using the CVSD codec at 8 kHz sample rate, or the HSP 1.6 «wideband speech» mSBC codec at 16 kHz. So, all Bluetooth headsets even in theory can\u2019t give you a good quality sound in calls and meetings!<\/p>\n<\/blockquote>\n

So, striking out all Bluetooth-based headsets, and go further to the next station.<\/strong><\/p>\n

Station 4: World of professional cardioid microphones<\/h3>\n

From audiophiles, I noticed cardioid microphones that capture sound only directly in front of the microphone.<\/p>\n

I\u2019ve analyzed several reviews and bought a pretty good model — Thronmax MDrill One<\/a>. The sound quality is great, it has 4 modes of directed capturing — that\u2019s exactly what I need:<\/p>\n

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But does it resolve my problem? Not! I still hear all side talk, not so loud as in previous microphones, but pretty loud!<\/p>\n

So, garbage again!<\/strong><\/p>\n

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Another fail<\/strong>: Separate professional microphones seems not a solution too.<\/p>\n<\/blockquote>\n

Station 5: World of USB RF connection: Jabra Evolve2 devices<\/h3>\n

So, the solution for garbage sound quality in calls is only a wired or RF connection. I hate wires, so the only solution that can give a good quality is USB RF connection.<\/p>\n

After a lot of surfing, reading reviews and articles, I\u2019ve figured out that Jabra has good experience in mic noise cancellation, decided to buy a pretty expensive headset Jabra Evolve2 65. And later — a more expensive one, Evolve2 85 (used, from eBay).<\/p>\n

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And, victory!<\/strong> Results on the side talk cancellations are really great! It cancels all side voices very well! They really almost disappear! Even a colleague, that sits 1 meter to my right and talks pretty loudly, is practically not heard in my conferences!<\/p>\n

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Victory<\/strong>: Mic noise cancellation in Jabra devices is damn good!<\/p>\n<\/blockquote>\n

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But!<\/strong> The incoming sound quality is very bad! When I just use it as headphones — all works well, but when I activate the microphone (even without a call) — it immediately switches to mono low-bitrate mode with bad sound quality (which Jabra names \u201cOptimized for voice\u201d for a marketing trick). Yes, it\u2019s a little better than Bluetooth HSP, but not much. And the same problem is in all Jabra wireless devices.<\/p>\n

Come on, Jabra! What a mono in 2023!? I want to hear a quality stereo sound at conferences too! Why are you restricting me?<\/strong><\/p>\n

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And I know that it is possible, many other brands via RF connection provide a good stereo bitrate together with microphone input. Just grab them and do the same!<\/p>\n

Additionally, 65 and 75 models have a problem with ear squeezing, they hurt after long use! But the mics are so good\u2026 Well, let’s live and suffer with them?<\/p>\n

Station 6: Nobody cares about noise canceling for microphones?<\/h3>\n
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Continuing to suffer from Jabra\u2019s bad-quality mono sound and ear squeezing, I\u2019ve learned that it is still possible to make microphones with a really good canceling of side voices. So, if Jabra can do this, other brands should be able to do the same! I just need to find them in plenty of models!<\/p>\n

So, I\u2019ve dived into many sites that provide headphones and headsets listing, filtering by different parameters, and figured out that all sites don\u2019t have a filter \u201cmicrophone noise cancellation\u201d at all!<\/p>\n

Yes, there are filters and selections with names \u201cNoise Canceling\u201d, \u201cANC\u201d, \u201cNoise cancellation\u201d, but all they are related to canceling background noise like street noise from vehicles, crowd noise, wind, barking, a neighbor with a puncher, etc. And not for side talks inside office rooms.<\/p>\n

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Attention!<\/strong> In most cases, the declared noise cancellation feature works just for your own ears only, and not for microphones!<\/p>\n<\/blockquote>\n

Seems the presence of this feature does not interest people? Really?<\/strong> No, it seems just producers don\u2019t care about it!<\/p>\n

So, how can I find among thousands of models their ones, that at least tried to implement any kind of microphone noise cancellation?<\/p>\n