Logitech "noise-cancelling" microphone - Page 2

0l33l · 04-30-2005, 12:45 AM

Quote: Originally Posted by rando

@0l33l: You say this mic performs much better than the others in a quiet environment. How about in a noisy one like a car? In a car with the stereo blasting? With the windows down at 80mph?

Well, when testing out NaviVoice, I'm usually listening to rap. It picks up the stuff in the speakers, but it doesn't recognize it.

Bugbyte · 05-02-2005, 08:04 PM

Here's audio I recorded (1.5 meg mp3) while driving in the car from the microphone location discussed in this thread

You can hear road noise as I drive faster but can still hear my voice clearly as well. Of course, I don't have the stereo on or the window open.

0l33l · 05-02-2005, 08:12 PM

Quote: Originally Posted by Bugbyte

Here's audio I recorded (1.5 meg mp3) while driving in the car from the microphone location discussed in this thread

You can hear road noise as I drive faster but can still hear my voice clearly as well. Of course, I don't have the stereo on or the window open.

Great quality mp3!

My guess is that SAPI automatically filters out those frequencies. It just takes up CPU time.

evandude · 05-02-2005, 08:18 PM

Sounds very good. What are you using to record? I got SA2k5 to do pretty good voice recognition (just on my desk, not in the car yet) but when I used windows sound recorder i couldn't even hear my voice in the recording unless I put the microphone almost in my mouth... Still haven't figured that one out...

Bugbyte · 05-02-2005, 09:32 PM

I was using sound recorder, the one that comes with Windows. Must be the volume setting for your microphone.

gizak · 05-02-2005, 10:00 PM

Good info here!

And nice audio clip, informative! I'm playing around with the voice stuff and have had the same experience with it working fine in the driveway, working about 90% with the windows up and no music on, and probably 70% with music slightly on.

I've been trying to increase accuracy as much as I can, and thinking of ways to do it. Two things that I did to my car don't help - replaced my exhaust with a straight through one, and swapped out my factory rim/tires with low profile, wide tires.

Exhaust, obviously not helping much, but I have alleviated it a little, as my cheap exhaust came with a silencer, which I inserted yesterday...it's helping a bit.

Tires, not much I can do... Since my tires have more contact with the road, I pick up much more road noise. They are also low-profile, which means the tires are inflated at a higher pressure, this generates more vibration, which in turn, generates more noise in the cabin. Sound transferring up my also lower and tighter shocks, doesn't help. Keep these things in mind if you are going to do voice recognition!!

Since I don't own a luxary car, with those nice "quiet cabins" I tend to get more noise inside my car. I've thought about sound deadening the inside, but it's kinda costly, and definitely time consuming. This would involve tearing out the all the chairs and carpeting, plus taking apart the doors and using a brand like Dynamat or Second Skin, and layering the entire metal interior with the material. I'm a bit too busy, and definitely too broke right now lol...but it's an option for other people to try, and perhaps myself - in the future.

One thing I did, that does seem to have helped (still need to test more), is to do the Microphone Wizard while driving - do this at your own risk!!! Originally I went through the wizard in my garage, in silence to let windows adjust the volume of my microphone, all was good until I got on the road. Doing it in a quiet area, made the microphone sensitivity higher and thus picked up more background noise. When I did it while driving, the added road noise caused the microphone wizard to drop the sensitivity enough to just make out what I was saying.

Anywho, that's my experience thus, far... if I get any more ideas, I'll let ya know, and if anybody else has tips, I'm sure I'm not the only one seeking the all hearing ear.

0l33l · 05-02-2005, 10:48 PM

This might help some of you guys out... note that the check is unchecked. You don't want it learning from the road noise!!!

antimatter · 05-03-2005, 11:37 AM

will these processes kill a via m10k?

0l33l · 05-03-2005, 12:06 PM

Quote: Originally Posted by antimatter

will these processes kill a via m10k?

From what wysocki said, having all the programs running will like NaviVoice, FP, and esp Phonecontrol.

fastXR · 05-03-2005, 06:30 PM

I do quite a bit of voice recording and have a fair understanding of how the mics work.

First of the mic input on your sound card provides a tiny bit of power to the mic. In simple terms it energizes the mic element. It is the difference between a dynamic and condensor mic.

If you want a really nice small mic take a look at http://www.reactivesounds.com/rp1.php This mic is small and will work with the mic input on a PC. The audio quality is great.

For sound recording take a look at Audacity. It is multi-platform and best of all is free.
http://audacity.sourceforge.net/

I intend to use my car computer to do voice recording. At least when I put the car back together.

0l33l · 05-03-2005, 06:37 PM

Quote: Originally Posted by fastXR

I do quite a bit of voice recording and have a fair understanding of how the mics work.

First of the mic input on your sound card provides a tiny bit of power to the mic. In simple terms it energizes the mic element. It is the difference between a dynamic and condensor mic.

If you want a really nice small mic take a look at http://www.reactivesounds.com/rp1.php This mic is small and will work with the mic input on a PC. The audio quality is great.

For sound recording take a look at Audacity. It is multi-platform and best of all is free.
http://audacity.sourceforge.net/

I intend to use my car computer to do voice recording. At least when I put the car back together.

That MIC looks cool. Too bad that I'll need USB to connect my MIC to the computer

FreaQ · 05-05-2005, 10:37 PM

Hi!

How about this small mic? It would be easy to mount in car...

Labtec® PC Mic 333
http://www.labtec.com/index.cfm/gear...d=619,crid2=10

I found by researching that it looks like labtec and logitech are together!?

Bugbyte · 05-06-2005, 08:25 PM

Quote: Originally Posted by antimatter

will these processes kill a via m10k?

It doesn't kill mine. FP, GPS, speech all run just fine. The Via is no speed demon but I also haven't found it to be unusable in this configuration.

Can't speak for PhoCo. Don't have it.

0l33l · 05-07-2005, 03:55 AM

Quote: Originally Posted by Bugbyte

Can't speak for PhoCo. Don't have it.

That's what wysocki said broke the camel's back

swbball28 · 05-09-2005, 03:55 PM

the labtech microphone, which is the logitech clone is on eBay for $2.99 shipped

http://cgi.ebay.com/ws/eBayISAPI.dll...sPageName=WDVW

ends in 3 hours, but they will prob just put it up again.