It seems whenever I stream music from an iphone through my stereo, which has a sales code RES with infinity seven speaker system, it sometimes plays like an old 33 rpm record on 45. This is an intermittent thing and usually happens after a phone call or after I receive a notification or text. Is anyone else experiencing this?

 

Never heard of a bluetooth extender or radio cleaner. Please forgive my ignorance but electronics and I don't usually mesh well. What are they? Did you have the same issues prior to using them?

 

I have the same issue. Once it gets to the point of playing, it'll play fine until a text or call comes in and then it's really bad sounding. I've heard that iPhones have had this issue and as such I usually just plug in through the aux jack.

 

I also use the AUX jack but I hate the cords everywhere (AUX cord, charger, etc). The BT streaming is a really nice feature, when it works. Have had the same capability using BT/FM transmitter. Minimizes gadgets and the like.

 

Well, this is kind of technical where I'm going to go into some techy info on how bluetooth devices communicate.

The problem is with the way the 2 bluetooth devices (the iPhone and the radio) are expecting the other one to do. This stuff is not clearly defined in the bluetooth specifications, so I've seen these things happen often. (ie I'm a systems engineer that works with bluetooth devices).

So anyways, what is probably happening is that you have music files on your iPhone which have a sample rate of 48Khz.

In the bluetooth wireless world, the way this usually works is that a device can send the radio the the sample rate information of the song that is playing or the radio can request the sample rate information. With the iPhone in particular, there are certain instances where the phone will not send the radio the sample rate information...an example would be, if the phone connects with the radio via bluetooth when the song is not at the beginning when it starts to play....in other words you started playing the song on your iPhone before it connects to the radio via bluetooth. The iPhone will usually send the sample rate information to the radio at the beginning of a song, along with all the other metadata information, like song title,etc. The radio then knows to play the song at that particular sample rate speed. If the iPhone doesn't send this sample rate information, as is usually the case if a song is in the middle, then the radio will most likely play the song at the most common default sample rate for audio files which happens to be 44.1Khz. 44.1Khz is a slower playback speed than 48Khz, so the song will sound like it is playing back at a slower speed like you are hearing.

So what is probably happening is that the iPhone is not sending this sample rate information, and the radio is not requesting this information from the iPhone because it is making a wrong assumption that iPhone should be sending it. So there is an interface communication bug going on here.

The only thing you could do, is to take note of the songs that you notice are playing back at the wrong speed. Open up iTunes on your computer and expose the "sample rate" column within iTunes. Confirm that the sample rate is 48Khz, (or something other than 44.1Khz) for that song that was playing at the wrong speed. You then need to Re-encode that song in iTunes and be sure to set the encode settings to a sample rate of 44.1Khz. You should do that to all the songs you see in iTunes which do not have a 44.1Khz sample rate. Then re-Sync your music library with your iPhone.

You did say that electronics and you don't mesh well, but unfortunately this is kind of a techy thing to do to avoid this problem. The good news, is that it doesn't cost anything if you're able to figure out how to do it.

 

Ok so I have a question for you. When I try to stream through my iPad 3 my uconnect will play about half a sound and then disconnect and reconnect and will keep doing this so much I can't use Bluetooth. It's not plugged in either so the only connection is Bluetooth. I've deleted all other devices also from the uconnect system. I also have a Bluetooth fm transmitter on my truck and it stays connected just fine to the same iPad. Any ideas on this. I take it to Chrysler and they say jeep is aware of the issue but don't have a solution yet.

 

Thanks for the info Rednroll. Surprisingly it makes total sense. I will try it. My only question though is, I experience the same problem even when streaming Pandora which is not part of iTunes. Are you aware of a setting change that can be made to address it there? Thanks again.

 

That is a problem which is part of the pairing registration process that takes place between bluetooth devices. Apple makes their own rules. While you would think that an iPad and iPhone would work identical in regards to bluetooth...they don't. So Apple makes all these changes between their different devices and it's up to all the other developers to change to make their radio work with all the individual Apple devices. So your radio came out before the Ipad 3, which means it wasn't designed to work with the iPad 3, since it didn't exist. For it to work, the developers of the radio need to go back and figure out what is wrong and try to fix it within their software...because Apple is not fixing the problem on their side, even if they are responsible for the problem.

Right now I'm part of a development team working on solving bluetooth interface problems for Apple's iOS6. Our product works perfect with iOS 5....install iOS 6 on the same Apple device and now the same bluetooth functions that previously worked, stop functioning properly and it's up to us to change. We ask Apple to fix the problem on their side and they laugh.

So everyone who currently has an iPhone keep that in mind when your iPhone prompts you that their is an iOS 6 software update available, because what's currently working today with your iPhone and your radio in regards to bluetooth connectivity is not guaranteed to work when you click on the "Yes...I would like to upgrade to the latest iOS software on my iPhone". That's the world we now live in.

 

That one is strange, sorry I have no real suggestions for that. I would try changing Pandora stations and see if that fixes the problem and then go back to your original station. It's usually changes like this, that cause a bluetooth device to send out information so things can properly play back.

 

Thanks for the info.