Microphone Port Tech Questi

I am an engineer, and am using the Audigy 2 zs card. I have a question concerning the microphone port.
Actually, I need an engineer or technician to answer if possible.
Why do I see 5 volts on one mic channel and .8 on the other?
Are both channels supposed to be the same?
What are nominal input voltage values?
How do I aquire technical information (along these lines)?

I found some good info at the Shure site:
http://www.shure.com/support/technot...ecomputer.html
Input Type: Unbalanced Low Impedance
Input Sensitivity: Approx. -20dBV (00mV or 0.Volt)
Input Impedance: 600 to 500 (Ohms)
Input Connector: 3.5mm Miniplug (Stereo Jack)
Input Wiring: Audio on Tip, Ground on Sleeve, 5Volts DC Bias on Ring </LI>

Similar Messages

W520 Owners: Compatible Splitter for combo Headphone/ Microphone Port

The w520 has a combo Headphone/ Microphone Port. You can use either a headphone or a microphone but NOT both UNLESS you have a ...
1. Headset with special 3 ring jack such as
      a. ThinkPad In-Ear Headphones (#57Y4488)
      b. 3.5mm TRRS Plug type Headphones for Smartphones (e.g. iphones, etc.) -- so you use the same headphone/mic you use for your cellphones (but lesser sound quality)
2. Splitter - so you can you use your own microphone and your own headphone/ stereo speaker (for better sound quality)
This solution was found here...
http://forums.lenovo.com/t5/W-Series-ThinkPad-Laptops/Where-is-the-Stereo-out-on-the-W520/ta-p/47306...
But a list of Compatible Splitters was not listed...
The aim of this thread is to verify and list compatible Splitter for W520 combo Headphone/ Microphone Port
The specs of the splitter are as follows: (Kindly verify if correct)
3.5mm (1/8") TRRS male plug (aka Smartphone plug) TO
3.5mm TRS Audio-Out Jack/ female plug AND 3.5mm Microphone-In Jack/ female plug
I browse online and found possible splitters. (In no particular order)
1. Sound Professionals Part# - SP-SMARTPHONE-CABLE
http://www.soundprofessionals.com/cgi-bin/gold/item/SP-SMARTPHONE-CABLE
--it was mentioned in the details tab that it is compatible with " Lenovo T410, T410s, T510, X, L & Edge computers"
so it is possible that W520 is compatible if the other Lenovo have the same combo port
- nickel contacts
2. Headsetbuddy Gold PC Computer Headset to 3.5mm Smartphone Adapter (Part# 01-PC35-PH35G )
http://www.theheadsetbuddy.com/gold-pc-computer-headset-to-3-5mm-smartphone-adapter/
- it was mentioned "Convert two 3.5mm plugs to single smartphone 3.5mm headset plug (TRRS) with mic and audio"
   so it fits the specs but I am not sure if it was tested for W520...
- gold contacts.
3. Headsetbuddy Gold PC Headset to 3.5mm Smartphone Adapter (Part# PC35-PH35G )
http://www.theheadsetbuddy.com/gold-pc-computer-headset-to-3-5mm-smartphone-adapter-1/
- same description as above but different part#. I am not sure if this is the same product or just a typo error on their website.
-gold contacts
4. Headsetbuddy PC Computer Headset to 3.5mm Smartphone Adapter (Part#01-PC35-PH35 )
http://www.theheadsetbuddy.com/pc-computer-headset-to-3-5mm-smartphone-adapter/
- - it was mentioned "Convert two 3.5mm plugs to single smartphone 3.5mm headset plug (TRRS) with mic and audio"
   so it fits the specs but I am not sure if it was tested for W520...
- nickel contacts
5. KV Connection iPhone 1/8 inch microphone and headphone adapter - 3.5mm 4 conductor TRRS Male to 3.5mm TRS Jacks (Part# KM-IPHONE-2TRS)
http://www.kvconnection.com/product-p/km-iphone-2trs.htm
It was mentioned that they have "Premium shield coax a/v cable for EMI/RFI interference...DC blocking protection ... microphone impedance matching"
They say it will "work with most 3.5mm mono or stereo microphones except for for unpowered ECM (electret condenser mics). If your microphone is an ECM without batteries then this special version of the adapter KM-IPHONE-2TRS-ECM is the adapter you would need."
So I guess the the type of microphone will have an effect also on what splitter to get.
On this site..
http://www.wfu.edu/~yipcw/lenovo/2011/T420s/review/
It says that on using the Part# KM-IPHONE-2TRS, with a "mono mic [Sony F-V410 cardioid imp 600 Ω vocal] in , it reverts to internal microphone for some reason.) and headphone"
So there can be incompatible mics for any splitter you use... OR is the defective splitter or the computer setting that is wrong...???
-nickel contact
6. KV Connection iPhone 1/8 inch electret condenser microphone and headphone adapter - 3.5mm 4 conductor TRRS Male to 3.5mm TRS Jacks (Part#KM-IPHONE-2TRS-ECM)
http://www.kvconnection.com/product-p/km-iphone-2trs-ecm.htm
-On site it says "This adapter is specifically for unpowered ECM (electret condenser mics). If your microphone is an ECM with batteries then the standard adapter, KM-IPHONE-2TRS is the adapter you would need."
-nickel contacts
7. eVerbatim splitter
http://www.everbatim.net/store/index.php/hardware/microphones-audio/headphone-microphone-jack-splitt...
- It says "This adapter has been designed and tested to work with all current Lenovo ThinkPad computers with a combined audio (VOIP) jack running Windows 7. Some ThinkPads that have the combined jack and that are running XP do not work with the adapter, which is a software issue and not a defect of the adapter. "
-nickel contacts
8. Startech 3.5mm 4 Pin to 2x 3 Pin 3.5mm Headset Splitter Adapter - M/F (Part# MUYHSMFF)
http://www.startech.com/Cables/Audio-Video/Audio-Cables/35mm-4-Pin-to-2x-3-Pin-35mm-Headset-Splitter...
It says "allowing you to add a mono microphone input as well as a stereo output to your PC or Laptop, through a single 3.5mm audio port."
-nickel contacts
Kindly tell if you have used any of this on your laptop. And tell...
1. Compatible with your headphone? (what kind you use)
2. Compatible with your microphone? (what kind you use)
3. Any problems with sound?
I hope we can continue this thread to list the compatible splitters for the Lenovo Thinkpad W520... Please do add if you have seen other brands.
Thanks

Hi all
To be frank, some of the multimedia laptops, with SRS Premium Sound, etc. are having the same speakers as W510 / W520 and is very loud (AFAIK, Dell Inspiron N5110 have the same speakers as W520 and the placement is just below the palmrest like surround sound). Theoretically, it makes the sound less focus and soft, but it works well with that laptop.
The Mic and Speakers are powered by the amp / drivers. The hardware in fact is very good, the only problem with it is the driver / software not well written. Good Hardware + Bad Software = Bad Product.
If you want a better sound / mic, you could try my Dolby Home Theater v4 solutions, hopefully it could meet more than your expectations and solve your problems without any cost. In fact, Dolby GUI is more customizable than Conexant. Most of us would not think it's more complicated, as techies would prefers more options to have fun.
1. I don't even need a external mic, an internal mic does the job with this fix.
http://forums.lenovo.com/t5/W-Series-ThinkPad-Laptops/W520-bad-microphone-Usable/m-p/528497
2. Dolby makes the sound much better and louder with correct settings. If not, my post are not able to stay active till now, reaching 100+ posts.
http://forums.lenovo.com/t5/W-Series-ThinkPad-Laptops/W520-Sound-Enhancement-Thread/td-p/442761/pag...
Installation steps:
Simplifications of installing and optimizing Dolby Home Theater v4 threads. Message 77 and 78 + Attachment.
3. Get a USB solution only if you need multichannel audio, stereo / wave mix or studio grade quality, if you are just using for entertainment, etc. W520 with Dolby Home Theater v4 should be more than sufficient.
Cheers
Peter
=============================================
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Mark it as solved if the solution works for you, so it could be reference for others in the future
Refunded Set: W510, 4876-A11
Current Set: W520, 4284-A99
Dolby Home Theater v4!:
http://forums.lenovo.com/t5/W-Series-ThinkPad-Laptops/W520-Sound-Enhancement-Thread/m-p/451401#M155...

Does Mac Mini have a microphone port?

I am thinking of purchasing a Mac Mini and I was looking at pictures and it doesn't look like it has a microphone port. I was curious if this is true?
Thanks,
Daniel

Instead of a plain "no," I'll suggest you look at the Griffin iMic. Many users, even before the Mac mini came along, have found it works very well.

I have an iMac G5 running OSX Leopard 10.5.6, how do I activate the external microphone port? In the Sound window there is no option for the external port.

I have an iMac G5 OS 10.5.6. How do I activate the external microphone port? In gen. pref. 'sound' there is no option for the external port.

Your audio settings may have been changed.
Open Audio MIDI Setup (/Applications/Utilities/), then check the Audio Output setting.
Change the Audio Output setting to 44100.0 Hz.
Quit Audio MIDI Setup.
More info here on no sound from built-in speakers:
http://support.apple.com/kb/TS1574?viewlocale=en_US
Any reason why you have not updated to the final verion of Leopard 10.5.8?

Changing headphone port to microphone port

hp 15-g092sa
i have just bought a hp laptop and didnt realise there was no microphone port , it has a headphone port, and i was wondering if it is possble to change the port to a mic port temp for me to plug a mini disc player into it and use the sound recorder to record the music, i bought the laptop with the purpose of converting old mini discs to mp3 and i cant believe the one laptop i bought has no mic input.
would love your help
thanks tracey

Hi,
Your machine should have micophone and haedphone port combo:
http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&docname=c04372331
You can use that same port for both headphones and microphone. It is designed to use headset (for chatting) such as:
http://www.amazon.com/eForCity%C2%AE-Computer-Headphone-Headset-Microphone/dp/B002ZKNRNA
Regards.
BH
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Microphone port doesnt work on SBL

The microphone works, but not in the microphone port. I have to use it in the line in port. But I dont want to do this because I have another device I'd like to use that port with. Any suggestions?
Oh btw, i did turn off the onboard audio in bios.

Unmuting the port, and it doesnt work. What is strange is, though even im using the line in port, i have the microphone line unmuted. If I unmute the line in port, the mic wont work. Seems strange. No I havent had a chance to try it in another computer yet, I just bought it like three weeks ago.

Microphone port issues

My new 3000H210 desktop has a problem with the microphone jack or maybe the sound board??? First the mike works ok , then the volumn goes away, and then sometimes the sound is totally gone.
I've tried several different mikes and I've confirmed the mikes are fine when plugged into another computer. I've reinstalled the Lenovo drivers, but still have this issue. The other system sounds and audio work great, This seems to be just a microphone port problem.??
Thanks for your input.. Pops

Thanks very much for your input!!
I did try adjusting all the settings, everything from setting to zero to max..same thing...voice records great, music is distorted with low volumn.
I then decided to download the free music editing software, Audacity, and try recording with it. This was the answer for whatever reason.
My music now records clear and with great volumn.
This is a good, free program and very easy to use for anyone interested in stuff like this.
Best Regards,
Pops

Mac mini microphone port

So I tried to use a labtec mic on my mac mini and it does not work. Then I look thru this forum and all I can find is I have to buy a USB mic.So what is the point of Apple putting the mic port on the mini if one can only use a USB mic???? Is it just for pro's
If a mic can be used on the rear port can any one please tell me what type/brand I have to buy. Cos I have got USB cables coming out the ying yang.
intel mac mini Mac OS X (10.4.8) newer tech 300GB external hard drive

You would probably be better off buying a USB mic if you have to buy one anyways, since the sound is switched from analog to digital outside of the computer, and therefore avoids all the interference inside the case.
You will get much better sound quality out of a USB mic vs similarly priced analog.

Analog microphone port not working?

I have a Mac Mini (mid-2010), and no analog microphone will work in it. I've looked through the forums and Googled around looking for an answer, but I can't find anything. Is there a known bug with this port, or should I just return the thing for warranty repair? I've had it only about six months....
Thanks,
Scott

The audio-in port is expecting a "line level" signal - MUCH stronger than a microphone level signal. One of the big differences between Macs and PCs. You need a microphone pre-amplifier to raise the signal level (impractical?) or a USB-connected microphone? Or something like an external USB sound interface, like the Griffin iMic?
http://www.griffintechnology.com/support/imic
If you can't find one new, they come up on eBay a lot.

How to use front microphone port for Vo

Hey guys, I'm using a trusty old audigy platinum, and I recently grabbed a headset to hop into gaming chat and VoIP with friends. The microphone works fine, because I can hear myself speaking through the headset. However, when I try to use it, no VoIP software recognizes it. I believe that the problem is that it's plugged into Microphone/Line-In 2 on my front panel. It's not a software-specific problem, because both GTalk and Skype have it. I do know there's some way to do a software work around, because some of my sound editting software allows me to take the input from the front(such as a guitar) and record and play fine.
What I need, is some way to pass off Microphone/Line-in 2 as Mic port , or some specific work around to make both Skype and GTalk work with the front ports. Putting it in the back is really not an option.
Thanks in advance for any help.

To use it with skype, go to options and under audio devices there should be an option called "Let Skype adjust my sound device settings." Untick this box and manually set the recording source to be "Mic2/Line-In 2."
The it should work with Skype without a problem

Satellite Pro S300-10J - Question about the microphone voltage supply

Hi there!
I would like to use my S300 10J for acoustical measurements on speakers. (DIY)
For that setup, I'm using an electret microphone, the IBF EMM-08:
http://www.etfacoustic.com/micpreamp.html
for power, this is what it needs: 1.5 - 10V / approx. 0.5 mA
Does the s300-10J supply that or not ?
Anyone that can recoomend an external soundcard that has that supply? (if my laptop doesn't )
Thanx in advance,
Bart Segers

Hi
I have a little bit searched with Google and I didnt find any details only about the microphone port. So I think this notebook is equipped with a normal microphone port as on every notebook.
I dont know if this is what you need but if you need an external sound card I can recommend Creative sound cards. I use Creative sound cards for years and I have good experience with it. For notebooks are special sound cards available that you can put in the express card slot for example:
[Creative Sound Blaster X-Fi Notebook|http://uk.europe.creative.com/products/product.asp?category=209&subcategory=669&product=1 7988&utm_source=de.creative.com&utm_medium=banner& utm_content=featurepg_soundblasterxfinotebookprodu ctinfo&utm_campaign=featurepage]

I'm using the note taking view of Word 2011 for Mac so I can record a meeting as well as take notes. The audio of the internal microphone is so low - can I attach an external mic and have it work with note taking view?

Can I attach an external mic to my Macbook Air to enhance sound input for the note taking view of Word 2011 for Mac? I've tried preferences to up the volume of my sound, but I still cannot hear the recording. Any suggestions? I need to record a meeting as well as take notes so I'd like to use this tool, but the audio is not good enough.

A USB microphone can work with the Air, and I've used them before with my 11" Air. Griffin also made a product (the iMic) that will add a standard computer microphone port, connecting to your USB port. It's heyday was the time of the old iBook laptops (which also lacked a microphone in jack) but I think it's still around.
The single sound port on the 2011 models, as I recall, supports iPhone style headphone/microphone but I don't believe it will support a standard microphone input.
The built in microphone sits on the left side of the computer and I suspect wouldn't work well for picking up a lecture unless you were sitting just right in position vs. the speaker (preferably having the speaker positioned to the left and sitting really close). By design most laptop microphones presume they are going to be mainly used to record a sound coming from the person sitting at the keyboard, while for a lecture you normally would prefer it concentrate on sound coming from behind the screen.

Internal microphone not working with Windows 7 RC on dv9000 (Dv9817cl)

Hi, I recently installed Windows 7 RC (64bit) on my HP dv9000 (DV9817cl) and everything seems to work apart from the internal microphones.
In the Sounds section of the hardware and sound section of control panel there is only one recording device shown "Microphone, High definition audio device, not plugged in". I take it this is the 3.5mm microphone port on the front of the notebook. There is only one driver issue showing in device manager for "Other devices>coprocessor".
The current audio driver is High Definition Audio Device microsoft v6.1.7100.0. I've tried looking for updated drivers ion the web with no luck so far.
Does anyone know where I could get an updated driver or have any suggestions to get this going?
Thanks in advance
Message Edited by Hamer7513 on 07-25-2009 02:25 AM
This question was solved.
View Solution.

Hi,
Download Audio driver from here.
Intructions how to install it in Vista/Win7.
Extract this driver with Winrar.
Open Device manager and expand the Sound, video and game controllers section.
Right click on Either the High Definition Audio Device if you have the generic Microsoft drivers, or the Conexant High Definition SmartAudio 221 if you have older Conexant drivers and choose "Update Driver Software..."
Click Browse my computer for driver software, then click "Let me pick from a list of device drivers on my computer"
Click "Have Disk..." then Browse to the folder where the drivers were extracted .......\V64 for 64-bit Vista/Win7. Click OK.
Select one of the "Conexant High Definition SmartAudio 221" models in the list, there will be multiple identical entries.
Click Next, and you're done.
I'm not sure which one from the list will work for You.
This drivers weren't test. So if You will try them and it will work for You let us now about.
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External microphone in headphone jack on Hp envy 15-j160no ?

Hello! I just bought my Hp envy 15-j160no. I want to use my external microphone for better quality. I have plugged my microphone in to my headphone input(because I have remebered that on this computer the input is working for both headphones and microphone, right?)
But i can't get it to work, my computer only uses the microphone that is built in on the computer instead.
I use an Audyssey that was included when I bought my receiver(Onkyo nr262)
Appreciate help!
Thank you!

Hi,
Please read:
This integrated headphone / microphone port uses a 4 section plug (identified with 3 black / colored rings).
You can plug a standard headphone in, and it should work by itself. A spliter cable may be required to support a stand alone microphone properly.
Please try:
Use a headset or
Use a "Y" adapter that can connect a separate microphone
Hope this helps
Regards.
BH
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Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

Captivate 4 and Windows 7 doesn't hear microphone and will not record

I have windows 7 as my operating system. I downloaded the trial version of captivate 4 while I'm waiting for my recently purchased copy to come in the mail.
I can record on my computer via its own sound recording utility under accessories. So that is up and running. I right-clicked on Captivate when opening to open as administrator, besides I have admin rights anyway.
But Captivate doesn't hear the microphone. My microphone is one that plugs in to the microphone port on my computer.
When I speak into the microphone, the red "Checking input Level" does nothing, and no sound is recorded.

Hi there
Perhaps try the link below?
Click here to view
Cheers... Rick
Helpful and Handy Links
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Microphone Port Tech Questi

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