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How would you make a direct link from a phone to an iPod through the TRS jacks to record ringtones? Answered

Hello! This is my first post on this site so I hope it will be a good one!

I have both a Samsung Messager and an iPod Touch 4th Gen (I'm not too sure if versions matter in this or not). The phone has a 3.5 mm TRS headphone jack with both three and four conductor capabilities and my iPod has the same.

Now, this is the conundrum I am in: My phone has the capabilities to record sound one of two ways, through the built in mic or through the headset (which also has a mic). However, when I do the recording sounds garbled, static-like, and all around horrible. Would there be a way to make a direct link from my iPod to my phone through the TRS jacks? I was thinking that if I did this then the digital sound quality would be much better. Then I could play my iPod, turn on the recording feature on my phone, and easily record the songs as they play. Then I could use those recordings as ringtones.

If at all possible I would not like to take apart my phone or iPod but I don't care about the headsets, I have plenty. I have experience in soldering and a bit in cicuitry.

Thanks in advance!


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Best Answer 9 years ago

The answer to your direct question is "Maybe". If you're willing to risk cooking the phone, which really wasn't designed for this, you could try using an attenuator resistor to drop the iPod's output down to microphone signal levels and a DC-blocking capacitor, and present that to the headset's mike input. Theory says this ought to work. In practice, I don't think I'd try it.

As far as what you've been doing goes: Telephone microphones aren't _intended_ to be very high quality, and so may not do a great job of recording music without it sounding ... well ... like it's coming through a phone. But your description of the distortion as "static" sounds like you're clipping, which means you're trying to present a louder signal than the microphone or circuitry are set up to handle. Try turning the playback volume down, try playing back through a high-quality pair of headphones or speakers rather than earbuds (may require an amplfier), try playing at about a speaking volume, and of course make sure there are no background noises -- then see whether that improves the recording quality.

Personally, if you want to put your own music onto the phone I'd recommend that you pay for the manufacturer's support software which provides that function. That'd give you the ability to copy the music direct from your PC to the phone, in somewhat the same way you copy it to the iPod, with minimal loss of quality and no risk to the hardware. For my Motorola they wanted about $35 for that software package, and that included the ability to back up the phone via the same USB cable. (I didn't bother since I wasn't playing with ringtones -- I prefer a minimally intrusive phone.)