Comments on: Dock Connector Audio I/O

By: Alex

Alex — Wed, 28 Jul 2010 19:05:32 +0000

I may try to contact Apple… However it’s ridiculous that I have to pass through all this to get a simple information. All I (and many other people) want is to get audio input working.

By: ben

ben — Wed, 28 Jul 2010 18:35:45 +0000

This is not as difficult to do as you might think. A local business license might cost you $20 or $30 to set up as an individual (sole proprietor). The MFI program offers an adjunct licensee option that gives you access to the docs without any of the reporting requirements of full membership. If you contact Apple, they may allow you to get signed on as an adjunct licensee for the purpose of allowing you to get the necessary information to evaluate the potential business opportunity for iPhone accessory development.

By: Alex

Alex — Wed, 28 Jul 2010 18:25:43 +0000

Thank you for your anwser Ben, but I’ve already tried to apply. I just can’t proceed as I don’t have any “business license/certificate, tax license, commercial registration, or equivalent”.
Anyway, my email is always valid…

By: ben

ben — Wed, 28 Jul 2010 15:08:17 +0000

Alex,
I would still encourage you to apply to the Made for iPod program for access to iOS device specifications.

By: Alex

Alex — Wed, 28 Jul 2010 14:12:06 +0000

Hello,
this is the most interesting page I’ve found in the net about iPhone/iPod Touch dock pinouts for line input. However I still haven’t found a solution to my problem.
I’m using an iPod Touch 2G with OS 3.1.2 (Jailbroken).
I modded a dock cable in order to use the audio input pins (5 and 6) but it seems they are disabled.
I also connected pin 11 to pin 15/16 (I didn’t try the modded cable without this last connection).
I tried with and without the connection between pin 15/16 and 21 with a 68KOhm resistor (but there was no difference). In both cases the integrated volume control was disabled and the audio output was working ok (at a rather high volume).
Maybe I have to choose a different resistor to indicate the kind of device I’m using? I wanted to register to the Made for iPod program, but I’m not a company, nor I have an app (yet).
Anyone could help me to make stereo input work?
Thank you in advance for your help,

Alex

By: ben

ben — Tue, 06 Jul 2010 23:29:01 +0000

The Alesis ProTrack works with the iPhone 3GS. However, the iPhone’s headphone jack will be covered by the ProTrack shield (which you have to purchase separately).

By: Odemar Costa

Odemar Costa — Sun, 04 Jul 2010 14:08:41 +0000

Good Morning.

Searching for Alesis Pro Track I found many posts about this device.
But the majority of these posts are refered only with using on Ipod.
I´d like to know if Alesis works OK on Iphone 3Gs?
Thanks for this technical information. Odemar Costa.

By: David

David — Tue, 25 May 2010 11:58:26 +0000

Ben, thanks for interesting information.

I need to master a couple of tracks, so that they sound good
on an iPhone 3G speaker.
So, I don’t really need to record audio, but need to pass line level signal into iPhone and hear it on internal speaker.
Would it it possible to do it, with any of the above devices?
Of course, the recording software must be able to monitor the signal.

thanks, David

By: ben

ben — Fri, 30 Apr 2010 16:29:23 +0000

Allen,

The iPhone OS automatically selects the audio input source, depending on what you connect to the device.

Ben

By: Allen

Allen — Fri, 30 Apr 2010 15:59:59 +0000

Ben how did you go about initialising the line-in functionality as i am trying to simply just adapt aurio touch to accept line in.

By: Greg

Greg — Fri, 26 Mar 2010 03:34:28 +0000

I think he is refering to something that can plug into a 3g and provide line (5v) level inputs as apposed to mic level (1v)

By: ben

ben — Thu, 18 Mar 2010 14:39:20 +0000

Dan,

It’s not clear what you’re asking. All of the devices listed above can be used with an iPhone 3G. They all have mics, but I am not aware of any line input accessories that do not. If you just want to record stereo signals, then I recommend that you check out the various recording apps available for iPhone. If you want to analyze the input signals, SignalScope and SignalScope Pro are both capable of working with 2 input channels (stereo line input).

By: Dan

Dan — Thu, 18 Mar 2010 13:36:21 +0000

Hi. I have been reading all the above and would like to know in a sentence what can I connect to an iphone 3g with stereo line level input and what app records stereo line input. NO MICS needed

By: ben

ben — Fri, 19 Feb 2010 23:37:34 +0000

The MacAlly iVoice Pro works with all versions of the iPhone OS, so far.

By: Tom

Tom — Tue, 16 Feb 2010 16:02:11 +0000

Hi,
from what I’ve read here I’ve understood that Ivoice Pro works with Iphone 3G FW 3.1.2 Is it right?

And Ben, Can you do me a small favour? If I give you an app to try can you tell me if it works with Ivoice Pro?

Thanks.

By: ben

ben — Tue, 02 Feb 2010 20:51:09 +0000

gc,

We have successfully tested the Belkin TuneTalk on all iPod touch and iPhone models (it’s a little tricky on the 1st gen iPod touch, but that’s already discussed in the notes above). Also, we have had success with it on iPhone OS 2.x and 3.x.

Ben

By: gc

gc — Tue, 02 Feb 2010 02:32:13 +0000

I’m confused. I looked at your site and concluded that the Belkin interface would work with our 2g, 3G or 3gs iphone. I then check other more recent sites and they say no! So, are they wrong or is your website evaluation due for an update. I really like your apps on the mac and was hoping to implement them on the iphone.

By: ben

ben — Wed, 06 Jan 2010 23:59:24 +0000

Jonathan,

The iPhone 3GS works fine with the ProTrack. The problem is that you need to find your own method of securing it to the ProTrack. This is even true of the iPod touch, since, even though they show a picture of it, the clear plastic ProTrack sleds for iPod touch aren’t available, yet.

By: Jonathan Richard

Jonathan Richard — Wed, 06 Jan 2010 21:22:57 +0000

Ben, I’ve looked on the Alesis website at the Protrack, but I don’t see anything to indicate that it can work with an iPhone. I don’t have an iPod touch, I have an iPhone 3GS — are the touch and the iPhone the same size and therefore interchangeable with the Protrack?

Thanks for your help.

Jonathan

By: Kevin

Kevin — Wed, 23 Dec 2009 01:48:02 +0000

I think the iAudioInterface might be the first for simultaneous line-in and line-out. It is suppose to release soon.
Kevin