Thread: Phone echo

Not exactly sure where to put it....I can't find exact physical dimensions but, this looks promising....

http://www.goelectronic.com/Merchant...ource=googleps

Ahh, interesting find Habious. I too wonder how big this thing is. Also wondering out good the noise cancellation is... cleary it wasn't designed with ROAD noise in mind I'm going to look at this some more.

Spoke too soon... I just read some more on it. For the echo cancellation to work you have to be using the unit as both your mic AND your speaker. No good for us car pc folks.

Nola111,

It's got a "speaker out". I wonder what would happen if you ran that to a soundcard input (line in). Might have to use an attenuating cable to match levels but, don't see why it wouldn't work.

If the thing was a little more reasonably-priced, I'd get on and experiment but, $125.00 is an expensive experiment if it doesn't work!

agreed it is a bit pricey, i have my mic already mounted and what not in my car though so I am not necessarily looking for a new mic, just a way to filter or stop the echo on the recieving end of the call.

Is there anything that can be wired in between the mic and controller? like actually soldered on to the mic wires them selves that would serve this purpose?

Originally Posted by Habious

Nola111,

It's got a "speaker out". I wonder what would happen if you ran that to a soundcard input (line in). Might have to use an attenuating cable to match levels but, don't see why it wouldn't work.

If the thing was a little more reasonably-priced, I'd get on and experiment but, $125.00 is an expensive experiment if it doesn't work!

Don't think it would work as well like that b/c if you connect a powered speaker or headphones to the Solo, that speaker or headphones can produce audio on its own. If you connect to a line-in on a soundcard, you need a pc, and therefore Windows to get the sound out of it. Because you need Windows, you have to select your soundcard as your playback device. At that point, the best you can do is select the Solo as your recording device since you can't have two playback devices at once in Windows. As soon as you have two different devices for playback and record, the ability to cancel echo becomes theoretically impossible because your recording line is buffered, which introduces latency. Even though the latency may only be a few hundred milliseconds, it's more than enough to make a horrible echo and bad delay in the conversation (trust me I know... I tested another BT "solution" for several months before giving up on it).

The solution to having two different soundcards in Windows is that Phoenix SOHO (not SOLO) mentioned earlier in the thread. That will cancel echo and delay. One guy on here has one and says it works well. But you do have to have a PCI slot for it. If you buy the SOHO, you can pretty much get any mic you want (although you still want to get one with good attenuation so noise canceling can be achieved.

Yup but, I don't have a PCI slot...let alone a FREE one!

You're probably better off sticking with your Motorola unit for now anyway. This is the third pc BT phone solution I've tested, and nothing against the programmers b/c the software is definitely good, but Windows is just not a good platform for a full handsfree BT solution, mainly for the reason I mentioned above. It's livable if you have everything on one soundcard, but units like your Motorola and units made by Parrot, and OEM units that come built-in to the latest model cars, that are all dedicated specifically to this function will yield MUCH better results than a pc when it comes down to the actual conversation part of the whole system. And isn't that what matters most?