I have a silly question about (USB) headphones
mhardy6647
Posts: 33,888
in Headphones
Now -- if there was ever a topic on which I am naïve, it's headphones. 
As it happens, I am one of a small group of people who run our church's Sunday morning service on Zoom (we've been doing hybrid live/Zoom services for a while, and will continue so doing indefinitely). We actually have a pretty nice setup now for A/V support.
I run the Zoom "videoconference" (really more of a livestream, of course) on a church laptop, but I like to monitor the actual Zoom audio & video as an "attendee" using a second laptop. I bought myself a cheap pair of USB headphones (actually, technically, a headset -- with headphones and a little boom mic) to do this, and they work admirably.
A couple of days ago, I got to thinking about these headphones. Since they connect to the computer via USB -- do they have a DAC built into them? I presume they have to... which is pretty amazing, given that they cost $29... and sound pretty darned good, actually.
FWIW, this is the USB headset I have.
https://www.logitech.com/en-us/products/headsets/h540-usb-computer-noise-cancelling.981-000510.html
I first bought Mrs. H a pair of them for her Zoom activities, so she was the beta tester, so to speak
Mmmm -- come to think of it, they'd need an ADC for the mic, too, wouldn't they?
There's no analog signal on a USB interface, right?
As it happens, I am one of a small group of people who run our church's Sunday morning service on Zoom (we've been doing hybrid live/Zoom services for a while, and will continue so doing indefinitely). We actually have a pretty nice setup now for A/V support.
I run the Zoom "videoconference" (really more of a livestream, of course) on a church laptop, but I like to monitor the actual Zoom audio & video as an "attendee" using a second laptop. I bought myself a cheap pair of USB headphones (actually, technically, a headset -- with headphones and a little boom mic) to do this, and they work admirably.
A couple of days ago, I got to thinking about these headphones. Since they connect to the computer via USB -- do they have a DAC built into them? I presume they have to... which is pretty amazing, given that they cost $29... and sound pretty darned good, actually.
FWIW, this is the USB headset I have.
https://www.logitech.com/en-us/products/headsets/h540-usb-computer-noise-cancelling.981-000510.html
I first bought Mrs. H a pair of them for her Zoom activities, so she was the beta tester, so to speak
Mmmm -- come to think of it, they'd need an ADC for the mic, too, wouldn't they?
There's no analog signal on a USB interface, right?
Comments
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Mark,
they're basically going to have something akin to this built in
https://www.ti.com/product/PCM2704
effectively a USB sound card
https://www.tinkerboy.xyz/pinout-diagrams-for-the-pcm2704-and-3d-soundcob-usb-sound-card-adapters/ -
Thanks! That is what I assumed -- but (ironically) I am still a babe in the woods when it comes to digital audio processing.
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Yes and it will convert your voice back to 1's and 0's for outputGustard X26 Pro DAC
Belles 21A Pre modded with Mundorf Supreme caps
B&K M200 Sonata monoblocks refreshed and upgraded
Polk SDA 1C's modded / 1000Va Dreadnaught
Wireworld Silver Eclipse IC's and speaker cables
Harman Kardon T65C w/Grado Gold. (Don't laugh. It sounds great!)
There is about a 5% genetic difference between apes and men …but that difference is the difference between throwing your own poo when you are annoyed …and Einstein, Shakespeare and Miss January. by Dr. Sardonicus -
Yes and it will convert your voice back to 1's and 0's for output
That's good -- 'cause, I mean, I could speak in 1s and 0s, but I'd be kind of slow... like me using Morse code.
