Comparison of Average Computer Mics vs. Phone Mics for Linguistic Data?

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Hello everybody!

So I'm working on a Linguistics project that currently records users reading words into their personal computers with WAMI. We then process that data with praat and R and send them back graphs and vowel plots and the like.

We're thinking about creating a mobile platform, but are uncertain as to how average cellphone/tablet mics would compare to average laptop mics. (We're a pretty Apple-heavy campus, if that helps!) We're trying to juice as much as we can from the data (formant tracking is pretty vital to the project), so the quality of the audio is important.

I've been trying to find specs, but have not really had any luck. For instance, Apple's spec for most of its products (if it even exists!) is simply "Microphone" -- sometimes, if you're lucky, "Omnidirectional Microphone".

To be fair, I'm not sure what data or terms exactly I should be looking for. (The fifth post here (http://homerecording.com/bbs/equipment-forums/microphones/what-good-microphone-specifications-26414/) has me a little nervous, heh.) This is a pretty new field to me, and if I could just get any sort of pointers, that would be fantastic!

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tylerde wrote:how average cellphone/tablet mics would compare to average laptop mics
Simular I'd say... The built-in mics on phones and laptops have just one requirement: voice should be intelligible. Should not matter whether that's by a human on the other end of the transmission or software that tries to make sense of it.

Come to think of it, there's a second requirement: low price! So chances are you'll find the very same mics in laptops as in phones & tablets.
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Gotta ask, what does this have to do with what KVR is for?
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I'd be surprised if there's much difference in performance, other than the effects of resonances from the casing etc. Pretty much everyone uses MEMS microphones now in these systems and there's an odds-on chance it's made by Knowles - although Infineon and ST have started to move into the market having supplied chips for contract designs to smaller operations previously.

Check the phone/tablet device teardowns to see what's being used in those. iFixit might have an idea of the microphones used in things like MacBooks and the bigger-selling PCs although they probably don't say the precise chip being used in the replacements they sell. Then have a look at the datasheets.

Or just try it out on an iPhone. The chances are the microphone will be about the same quality as any other half-decent smartphone - if not the exact same device.

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from what i have read, you can get a huge leap in quality for spoken-word audio with a good lavalier mic

this has good reviews, though make sure it is the (+) version. also, though they specify android compatibility, it's worth checking each unit just in case

http://www.smartlav.com

here is a comparison video between the original smartlav and the iphone5 mic :

https://www.youtube.com/watch?v=JMcA9bLBn4s

and a comparison between the origina lav, and the improved lav+ :

https://www.youtube.com/watch?v=jsJPe6s74nc

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Perfect, thanks guys! I was kinda figuring they'd be similar, but I'm gonna start with iFixit and see where that takes me.

Maybe we could get a few Lav mics for general use too? Hmmm...

(Also, I apologize if this isn't the purpose of the forum! I actually found this place via this post, so I figured it wouldn't hurt to ask.)

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