Thread: Phone integration using Parrot kits

Originally Posted by hadaak

We can get some funds for you if the license price is not in millions :-) how much does it cost. We are more interested in the phone feature for the moment so if youi can make that work with with good quality I'm ready to help with fiance :-) we can even make a kit for the carpc comunity !

Im far from finish, Im only sending basic commands to get the module to do the basic things. Although it work on my test phone but it mat not work on others phone due to command/response inconsistency. Not sure how much it would cost, it is best to evaluate the module first before spending alot of money. The devkit alone cost about £450 already, building a test board would be cheaper, exactly what I have done.

Originally Posted by hadaak

anyway I'm ready to test as I already have the noise noise microphone (andrea da-350) and the echo cancellation card (Phoenix audio soho Pci). I can get a WT32 module and start testing if you're ready to send me your soft.

Not sure about the echo/noise yet. I did a quick bench test and there seems to be no echo. The WT32 may come with the basic echo/noise cancel.

Originally Posted by hadaak

Any updates on your test? What BT stack are you using? Is the phone audi quality any better than the BS stack?

The BT stack is embedded in the module so it is a car kit quality module. All the hard work is done on the hardware side, the PC is just there to control the module.

Good. will be waiting for your search results then

looks like someone beat you to it :-)

http://www.microsofttranslator.com/b...hp%3Ft%3D18051

Originally Posted by hadaak

looks like someone beat you to it :-)

http://www.microsofttranslator.com/b...hp%3Ft%3D18051

LOL no, that is the forum I got the idea from and even posted the link here. I wanted to use a readily available module is the reason I wanted to make my own version. WT32 is readily available while the MBC05-CAR module is not, on top of that I wanted to use the I2S port and stream the audio to USB, I do hate using the linein as they tend to introduce noise/distortion/ground loop.

Post #15
http://www.mp3car.com/road-runner/15...ml#post1484607

Anyway an update, I managed to get the license key for the iwrap5. According to the tech support I will also need the licence to use the CVC (the echo/noise cancel) Not sure how much that would cost, it seems that most of these module doesnt come with echo/noise cancel. Im gettting the impression that the BT handsfree project in the russian forum doesnt include the noise/echo cancel either.

Since Im using a PIC32 MCU to do the USB audio, Ill probably switch to DsPIC and use it for echo/noise.

The echo/noise cancel is the most importane bit unless these module can work fine even without it. There are some SW solution like the BS but if that can work as good I see no reason to make a HW version really.

Is BS really that bad? echo/noise/quality and reliability?

I've got pretty bad echo in my car. I hear everything fine, but whoever I am talking to hears themselves echoing back. Just looking through my Mic settings in Windows, I see Noise Suppression not turned on, and Acoustic Echo Cancellation also not turned on. Since windows knows what's going out and what's going in, I think these might be worth playing with. I think that a high-end directional microphone would help a lot too.

I'm almost even tempted to suggestion a "Push-To-Talk" button to toggle the microphone (seems unsafe while driving though). In a perfect world, DriveLine might even monitor the line levels of the mic and speakers, and adjust the two so when one goes up the other goes down. Ideas, ideas.

Even with my highend DA-350 and SOHO Pci card the audio quality is not good enough with BS. I don't have echo, I don't have noise but I have bad quality audio.
I do hear everything pretty clearly but the people I call say they don't hear me very well !!!! so it's the outgoing audio which is bad !
Might be my wiring. I'm going to check that this weekend.

I just asked the guy to sell me one unit to test.

Originally Posted by ClockWorK

I've got pretty bad echo in my car. I hear everything fine, but whoever I am talking to hears themselves echoing back. Just looking through my Mic settings in Windows, I see Noise Suppression not turned on, and Acoustic Echo Cancellation also not turned on. Since windows knows what's going out and what's going in, I think these might be worth playing with. I think that a high-end directional microphone would help a lot too.

I'm almost even tempted to suggestion a "Push-To-Talk" button to toggle the microphone (seems unsafe while driving though). In a perfect world, DriveLine might even monitor the line levels of the mic and speakers, and adjust the two so when one goes up the other goes down. Ideas, ideas.

My WT32 testing didnt get that far so the other person on the line will probably hear echo. Let us know the result of the software echo/noise cancel. It is probably good enough.

Originally Posted by hadaak

I just asked the guy to sell me one unit to test.

Which module is that? did you have any luck with the other supplier? Im not too confident with this WT32, it seems that getting the license for the echo and noise cancel is more difficult than I though. It is a pointless project without those function and Im considering changing module and use a DSP instead.

If you gonna get a BT module, do ask the supplier if it does have the echo and noise cancel built it. Most of them either dont have it or claim to support but it doesnt mean you will get it on the module you buy. $95 for the WT32 from farnell and it still doesnt have the echo and noise cancel built in

guy confirmed echo and noise cancel and all this for 75$ + shipping !!!
But the module is out of stock now. I'm waiting for his notification when he makes other units.
Are you guys interested? It can probably speed things if he knows there are 3 modues to make :-)