I am getting terrible interference when I try to record from my iPhone directly to my Zoom H1n handheld recorder using cables. I have a cable
that takes a mono output from the phone and feeds it into the H1n via a splitter, and the other side of the splitter has a lavalier mic, self-powered,
plugged into it. The H1n has two channels. I am using a set of headphones to monitor the recording from the output of the H1n. I built a custom
cable to get just one output channel from the phone's audio to send to the recorder. I use the other channel for the lavalier mic (my voice). The
caller can hear me from the phones mic, and I monitor from the headphones.
Theoretically this should work, but I am getting a very loud interference as soon as I activate the phone. Loud popping and chirping, especially
when the phone is held near any of the input cables going into the H1n. I tried using the phone with just the headphones plugged in, and
using the phone's mic to communicate with the caller, and this works just fine. I also don't get any interference while putting the phone near the
headphone cable. All cables are very short, but are unbalanced, as they are just cheap audio cables you would buy anywhere.
The input impedance (Z) of the H1n is listed as 2k ohms. The Z of the mic is 1k, but I don't know what the output Z is of the iPhone. I imagine that it is
somewhat low so that it would be compatible with plug in headsets.
I think that I may need to do some impedance matching between the phone and H1n, but I am not sure where to start.
I do have an Apple lightning to audio adapter on its way so that I can test that, but I don't have high hopes for that working either.
Any help would be greatly appreciated. Daniel
that takes a mono output from the phone and feeds it into the H1n via a splitter, and the other side of the splitter has a lavalier mic, self-powered,
plugged into it. The H1n has two channels. I am using a set of headphones to monitor the recording from the output of the H1n. I built a custom
cable to get just one output channel from the phone's audio to send to the recorder. I use the other channel for the lavalier mic (my voice). The
caller can hear me from the phones mic, and I monitor from the headphones.
Theoretically this should work, but I am getting a very loud interference as soon as I activate the phone. Loud popping and chirping, especially
when the phone is held near any of the input cables going into the H1n. I tried using the phone with just the headphones plugged in, and
using the phone's mic to communicate with the caller, and this works just fine. I also don't get any interference while putting the phone near the
headphone cable. All cables are very short, but are unbalanced, as they are just cheap audio cables you would buy anywhere.
The input impedance (Z) of the H1n is listed as 2k ohms. The Z of the mic is 1k, but I don't know what the output Z is of the iPhone. I imagine that it is
somewhat low so that it would be compatible with plug in headsets.
I think that I may need to do some impedance matching between the phone and H1n, but I am not sure where to start.
I do have an Apple lightning to audio adapter on its way so that I can test that, but I don't have high hopes for that working either.
Any help would be greatly appreciated. Daniel