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iPod touch audio in reportedly working

Over at the iPod touch fans forum, user Marian reports that he's managed to confirm that the iPod touch audio input pins are active. He modded an old docking cable, connecting the line-in pins to an audio source. He then used my voice recording app to capture the signal. You can see pictures of his setup on his personal blog.

I'd really appreciate it if any of you own an iPod mike (iTalk, MicroMemo, whatever) could test it with VoiceNotes on a touch and see whether these pre-built solutions are also compatible.

Update:Marian writes that he's recorded from audio line in. You can find a sample he recorded here. He's now working on attaching a mike. Unfortunately, since I exclusively record using the voice-optimized AMR codec, the quality is just so-so.



Over at the iPod touch fans forum, user Marian reports that he's managed to confirm that the iPod touch audio input pins are active. He...
 

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earl

The iVoice III you can get at Walmart for $25 works with the touch. When you plug it in you will get an error message. The line-in plug does work but remember line-in audio levels are much higher than a mic. There is a hardware mod to enable the mic preamp in the iVoice. It involves removing a SMD resister and adding one wire. The drawback tho is these parts are SMALL so the average Joe may not be able to do it.
The vnotes native app works with the modded iVoice. It also works with an unmodded iVoice using the line-in plug on it. But remember, line-in levels.
A SW mod is in the works to get the touch to turn on the circuitery in the iVoice without doing a HW mod.
Search the web for iVoice mod if you want detailed mod info.
Earl

December 28 2007 at 12:16 PM Report abuse rate up rate down Reply
Fernando S.

Scott, I´ve just tested mine and, as Peter´s, it records in a low level with the switch set to "mic".
Being somewhat curious, I could not help noticing the mild white noise from its speakers, indicating they are alive, though not really amplified. That and the low level make me wonder about the presence of an amplifier and a way to switch it on. Having such a thing working would enable us to use Micromemo even as a speaker for hearing music at work :)

The form factor seems to fit the Touch just fine on the sides, with a little off (1~2mm) on the faces.

December 02 2007 at 7:04 PM Report abuse rate up rate down Reply
1 reply to Fernando S.'s comment
Scott W.

Thanks for the quick test. Your findings are intriguing.

I decided to buy a MicroMemo just to mess with it (I got it cheap). I'm going to try it with a preamped pro mic on both settings, as well as a line level source (my CD player), to see if it improves anything. Hopefully I won't blow anything out...that would suck.

My guess is that the capacity on those speakers wouldn't be loud enough to hear well if there's any other noise in the environment (probably a 1/2 inch diaphragm), but it's worth a shot.

I'll report back if I have any success, whenever I get the thing.

December 02 2007 at 9:04 PM Report abuse rate up rate down Reply
Scott W.

Peter, thanks for checking out the Micromemo. I don't own one (and you probably thought of this), but I believe there's a line/mic level switch on the side of unit which, if set to line level and used with a mic will produce a low level recording. Setting it to mic raises the gain.

Also, just curious about the form factor of the Micromemo and the iPod Touch. Did they fit together nicely, or was it a little off?

If this works, I'm very excited! Thanks.

December 02 2007 at 12:26 PM Report abuse rate up rate down Reply
Marc

For the guy who just wants to go into the supermarket and call the wife for, "Do you want bread and milk?" IP is going to be fantastic. I've got a cheap VirginMobile phone that I have to top up with $20 every 90 days. I'm up over $140. I can't spend my hours. (Being married is very different from being 17 and single- especially if you hate to yak on the phone). I've written to Apple and I'm sending this out to anyone who can make it happen- COME ON VOIP on the iTouch!

November 26 2007 at 10:31 AM Report abuse rate up rate down Reply
Peter Dufault

The micromemo works. The "This accessory is not supported by iPod" alert pops up when you attach it, and the sound level is too low, but it works. Is there anyway to change the mic gain?

November 26 2007 at 7:50 AM Report abuse rate up rate down Reply
S

I have confirmed his findings myself, the audio in seems to work fine. I tore apart an old USB connector to wire it up for audio, and attached it to an old creative mic i had as part of a headset.

November 22 2007 at 4:20 PM Report abuse rate up rate down Reply
Hervé “.

This, plus a Skype-like VoIP client, plus PingTunnel = free VoIP everywhere a wifi signal is present 8D

Erica, you aren't interested in PingTunnel too, by any chance?

November 22 2007 at 1:46 PM Report abuse rate up rate down Reply
1 reply to Hervé “.'s comment
taxbax

ive been hearing about ping tunnel a lot lately, has anyone been able to figure out a port for it, thatd be so cool!

December 31 2007 at 9:15 PM Report abuse rate up rate down Reply
Josh

Um, verysmallrocks, thanks but no thanks. That Skype "web app" isn't a Skype VOIP client at all. Ultimately it's just a link to a service that redirects the phone call back to your cell.

http://www.shapeservices.com/en/faq/sections/imskype.php?platform=none#60

A true Skype client would let you make FREE voice call to another Skype client, over the internet (essentially, only using your data plan or wifi.) If it requires your cell minutes (as most U.S. carriers charge for incoming calls too) then what's the point?

November 22 2007 at 11:55 AM Report abuse rate up rate down Reply
yakso

I just hope they don't find out that the iPod touch has Phone hardware as well 8-)

November 22 2007 at 10:16 AM Report abuse rate up rate down Reply
Jesse David Hollington

The actual "Made-for-iPod" voice recorders such as the Griffin iTalk and Belkin TuneTalk Stereo will definitely not work for one very simple reason: The authentication chip that they were required to add for 5G support communicates the capabilities of the device. In essence, it says to the iPod: "Hi, I'm a Voice Recorder!" to which the iPod touch simply responds -- "Hey, I don't support you, go away." and disables communication with the device after that point.

So no "official" iPod Dock Connector based recording accessory is going to work, since in order to work with the other iPod models, they need to incorporate an authentication chip that broadcasts their capabilities to the device itself.

This is the same reason why the Nike+ adapter can be used to "cheat" video playback output on the iPod nano, yet it cannot on the iPod classic, since the latter just refuses to talk to the accessory in any meaningful way as soon as it discovers it's unsupported.

November 22 2007 at 6:53 AM Report abuse rate up rate down Reply
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