Basically, iOS includes audio support Android does not. There are fundamental differences between Apple and Android in how they handle recording through the charging ports. I would love to hear about any experiences using smartphones with external microphones. A pre-amp, such as the Tascam iX2 would help, but is only for XLR mics. They appear to function quite well in office and studio settings, but are probably not suitable for nature recording. Some companies are selling fancy-looking setups with two mics that are supposed to be stereo, but there is only one input in the jack, so it is still a mono signal.
It is not possible to get a stereo input through the TRRS port. Some apps split the signal into two mono signals, but it will not be true stereo. The TRRS port allows only one microphone input, so the signal will be mono no matter what type of microphone is used. Note that the power to these microphones is pretty low, so they are probably not capable of recording quiet or distant sounds without adding a lot of microphone noise. Even if you get the proper adapter, the microphone may not work properly with it. This is very helpful in making sure you are recording what you want, otherwise you need to watch the visual input displays (if your app has them) or wait to play back the sounds. Some of these connectors also allow simultaneous monitoring if you plug ear buds or headphones into the other jack.
Some adapters are for microphones with batteries, and others specify microphones with no batteries. Note that this does not appear to work on all devices and microphones, apparently there are some differences in impedance levels of the microphones that the phones can’t deal with. Adapters include the Rode SC4 and Saramonic SR-UC201. Make sure that the adapter is compatible with your phone. If you already have a microphone with a 3.5mm jack or an XLR microphone (with power supplied – the phone can’t supply 48v phantom power), you can buy an adapter that allows you to plug it into the TRRS port. See “ Comparing recording on a smartphone to a dedicated recorder” for a video on how the iRig Mic Cast works on Android and iPhones. You might want to review my page on “ Choosing Microphones” if you don’t know the difference between a lav and a shotgun. I have not used any of these, but I would expect them to be substantially better than the built-in microphone on the phone. Sorry your browser does not support iFrame Luckily, several manufacturers have developed microphones that plug right into the headphone jack. The color is irrelevant, but the number of lines is not.īecause of the differences in jacks, you cannot plug in any old microphone with a 3.5mm plug and expect it to work. Note the 3 (white) lines in the plug for the ear buds from my Samsung Galaxy S3, compared with the 2 (black) lines in the plug for a lavalier microphone. Before you attempt to connect an external microphone via the headset port, make sure it is a TRRS port. If your headphone jack has 3 lines (4 rings) on it, it’s a TRRS, which means it can act as a microphone as well as headphones. Most iPhones and smart phones these days come with a TRRS port for the headphones. External microphone through the headset port Especially problematic seems to be recording loud sounds, such as concerts, although even those capabilities are improving. Newer phones have two or three microphones, but differ quite a bit in their sound recording abilities. Microphones on various models of phones vary quite a bit. Also very handy is the ability to email the recording, or save it to cloud storage, such as Dropbox. Important things to look for in an app are the ability to: 1) adjust gain levels 2) change sampling rates 3) display the recording levels on the screen, so you can make any adjustments necessary and, perhaps not as important, 4) save the files to multiple formats (at least. I would highly recommend getting a third-party app, as the apps that come with the phone are pretty basic. If you are looking to use your phone as a voice recorder, for recording personal notes, meetings, or impromptu sounds around you, then all you need is a recording app.
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