Moto E4 stereo mic

[Dammitbobby3]

I have a question about my new phone.

I just bought the Motorola Moto E4 on Verizon prepaid, and I have a question about audio recording and the supposed stereo microphones.

I am trying to get a voice recorder app that works in stereo but all the ones I've tried, including ones that definitely have this option enabled in their respected menus; have only mono sound.

I have noticed the camera has it.
The phone has 2 mics with noise cancellation to my understanding. How come this isn't working?

 

[svim]

The integral microphones inside most smartphones are still relatively low bitrate, mono, the issue being they're typically only for voice and with size being a major factor, they're also pretty tiny components (only requiring a little pinhole opening). And keep in mind there's a difference between a stereo recording that consists of two, duplicate audio signals and one with two distinctly different audio signals (i.e. one channel may have predominantly sounds from the left side of a room with the second channel having predominantly sound from the right side of the room).
You can turn on the 'stereo' option in one of those apps but that cannot make a mono microphone magically become a stereo mic. At best you'll end up with an audio file with two duplicate channels, and the file size will be increased accordingly (two channels instead of one) but still without any real stereo separation. Regarding your E4 (I have one too), there's a rear (used with the rear camera for video) and a bottom mic (phone calls and such), both mono, but they allegedly don't work in conjunction with each other. Where did you read that they do to create some kind of stereo audio?

 

[Dammitbobby3]

The integral microphones inside most smartphones are still relatively low bitrate, mono, the issue being they're typically only for voice and with size being a major factor, they're also pretty tiny components (only requiring a little pinhole opening). And keep in mind there's a difference between a stereo recording that consists of two, duplicate audio signals and one with two distinctly different audio signals (i.e. one channel may have predominantly sounds from the left side of a room with the second channel having predominantly sound from the right side of the room).
You can turn on the 'stereo' option in one of those apps but that cannot make a mono microphone magically become a stereo mic. At best you'll end up with an audio file with two duplicate channels, and the file size will be increased accordingly (two channels instead of one) but still without any real stereo separation. Regarding your E4 (I have one too), there's a rear (used with the rear camera for video) and a bottom mic (phone calls and such), both mono, but they allegedly don't work in conjunction with each other. Where did you read that they do to create some kind of stereo audio?

Well i haven't read this, but I've proven it with the camera app.

Every Moto phone I've owned ( the G1, E2, Droid RAZR ) have had the standard dual mics with noise cancellation and they def work in stereo.
I took a couple of quick videos with the moto camera app ( on the E4 ) and there is indeed stereo separation. I can whistle or talk off to the Left or Right and aim my voice at that particular microphone and I can hear that L is L and R is R in the video playback.

 

[svim]

Please post a short sample (mp3, ogg, whatever) of some recorded audio from your E4.