minnesotajersey

minnesotajersey OP t1_ja3i4qs wrote

My thought process is that if you have a headphone with sloppy frequency response, then you are not getting a true idea of what the person can hear. It would be like using a bad microphone to test a “perfect” speaker. The microphone will make it seem like the speaker response is poor. Bad earphones in a hearing test would be the obverse.

I hope I’m saying that in a way that makes sense.

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minnesotajersey t1_j6nf04x wrote

Audio devices that sound different are either wrong or right. They are either adhering to straight wire with gain, or deviating.

Find a setup that give you straight wire with gain, and anything that sounds different is “wrong”.

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minnesotajersey OP t1_ix0uu5i wrote

Yes. Cool. Audio phase cancellation. Known about since the 30’s. How do my neckbuds deal with the latency issue that my phone would be unable to handle?

Is it the real-time software processing versus hardware-based that is the problem? I use an old PC that can de-click and de-hiss records in real time with zero delay between the processed and unprocessed sound.

Nerd fact: simply mixing to mono can get rid of a lot of surface noise on an LP through phase cancellation. I used that method in the 90s before DCART existed. My software now does it through DSP, though.

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minnesotajersey OP t1_ix0gv0d wrote

I really DO know what ANC is, and how it works. The most simple example being connecting two speakers out of phase; a more complex example being physical lens stabilization on military binoculars, or mechanical sound damping in a handgun suppressor, or hydraulic vibration dampeners on a crankshaft.

So, let’s talk latency: How do ANC ‘phones overcome latency whilst a cellphone would not be able to do so? The ‘phones are tasked with playing an out-of-phase version of ambient noise that is picked up by microphones. What processing power do they possess that a phone could not offer?

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