I am making these requirements to avoid hospitalization, which is what I
risk when I do not match these numbers. Your background is not
neuroplasticity, so you have no reason to judge my requirements.
On Tue, 11 Oct 2022, James Knott via talk wrote:
I didn't say it was better. I said the microphone in the video camera works
fine. What I did say was that I use a headset mike with my ThinkPad,
because that is definitely better, as the built in mike picks up noise from
the computer. As I mentioned, I frequently use video chat, most recently
this morning and for my purposes, the camera mike works fine. If I were in
a noisy location, then I'd use a headset. On the other hand some people
seem to go overboard and seem to be pretending to be a broadcaster, with a
mike hanging down from a boom, etc..
BTW, my background is in telecom, going back 50 years and am well aware of
the requirements for intelligible voice. That has generally been about 300
Hz to 3 KHz and toll quality calls were handled over 64 Kb/s digital
channels. These days, however, one of two things happen to voice. Either
it gets compressed, when not needed or the quality is improved almost to
being "Hi-Fi" with newer CODECs. Take a look at cell phones. The first
phones were analog with audio comparable to toll quality. Then 2G came
along and compression was used to fit multiple channels in the spectrum
occupied by an analog call. More recently, with 4G and 5G, there is so much
bandwidth available that CODECs are going the other way, providing much
better than toll quality calls. Also, consumer quality gear is more than
adequate to carry voice from just about anything. Bottom line, I don't know
why you're making such requirements, when they shouldn't make much
different. For example, you don't hear impedance. Impedance is selected
to ensure maximum power transfer by matching source and load. That's it.
Sensitivity might be something, but since everything has a volume control
these days, not so much. A more likely issue would be distortion, which can
make it hard to hear, even with a loud signal. Here you want to avoid
cheap. Same with frequency response. If you meet the toll quality needs,
then it should be OK.
BTW, going way back in my career, I used to do the network tests on the CBC
radio feed into Northern Ontario transmitter sites. I'd measure things like
frequency response, levels, harmonic distortion, background noise and more.
It'd record the data on a chart and plot the curves, etc., to be sent into
the CBC. Back then, if you were a CBC listener in Northern Ontario, you
could hear the tests going out over the network at 1PM Thursdays and I'd be
there taking the measurements.
On 2022-10-11 12:04, Karen Lewellen wrote:
certainly on an extra mic. Having been a radio producer for more than 30
years, I have no idea where this person's claim that the computer mic was
better came from, but I ended up broadsided by the change.
Something I seek to avoid by finding a replacement for the airbox mic I
got to use previously.
I am thankful learning that USB will be a firm no however.
Karen
On Mon, 10 Oct 2022, James Knott via talk wrote:
> On 2022-10-10 22:04, Karen Lewellen wrote:
> > As I shared in one post, normally I do not do zoom meetings using
> > zoom
> > software and a computer at all.
> > this setting though requires both.
> > so, its either a headset, or a stand alone microphone, which given
> > that
> > indeed would need a converter would be more costly.
>
>
> I use video chat frequently and rely on the microphone in the video
> camera, which sits on top of my monitor and don't use headphones at
> all. However, I do have a Logitech headset with mike, which also works
> well. I use that on the rare occasion when I'm doing a video chat with
> my ThinkPad. I have used Zoom, Jitsi, Skype, Meets and Teams. No
> problem with any of them. Many people use separate microphones too.
>
> As mentioned by me and others, USB connections are digital and you
> simply don't worry about things like impedance with them.
>
>
>
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