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Audio Plays on computer, but goes near mute on Mobile Phone

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Miguel Zamora
Audio Plays on computer, but goes near mute on Mobile Phone
on Dec 16, 2014 at 5:09:01 pm

Hi All,

This has to do more with editing audio. I shot some talking heads with an H4N, and when I playback the footage on my comp, the orientation of two subjects sounds different from the rest. Then, when I export the footage and play off a mobile phone, those same subjects' lines go damn near mute. The audio is audible on a computer.

I edited on FCP 7, and did have to use a gain filter for the audio.

Any one come across the problem before? A push in the right direction would be greatly appreciated as this is meant to be streamed on mobile devices, and I would like to avoid this bullet in the future.

PS: When I add my audio to the timeline, it adds on as Stereo.

Thank you!

- Miguel


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Richard Crowley
Re: Audio Plays on computer, but goes near mute on Mobile Phone
on Dec 16, 2014 at 5:31:43 pm

The most common cause of your symptom is that one of the "stereo" channels is reverse-phase from the other. You didn't explain how you miked or mixed the audio for recording? It is almost NEVER EVER a good idea to use "stereo" for dialog, and you have provided the prime example WHY. Try using JUST ONE of the tracks, either Left or Right, but NEVER BOTH.


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Miguel Zamora
Re: Audio Plays on computer, but goes near mute on Mobile Phone
on Dec 16, 2014 at 6:28:15 pm

Richard,

Thank you so much, you pointed me in the right direction! I split the tracks, deleted A2, and duplicated A1; adjusting pan accordingly.

Audio now plays on mobile phones.

By the way, I used a sennheiser cardio mic off a boom pole, H4N set to stereo, Gain somewhere between 25 and 30.

Thanks again!

- Miguel


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Richard Crowley
Re: Audio Plays on computer, but goes near mute on Mobile Phone
on Dec 16, 2014 at 7:18:41 pm

You plugged a monaural balanced microphone into a stereo mic input and it recorded +signal on the left track, and -signal on the right track. Either track by itself would work, but when you combine them, they virtually cancel. You need to use a proper adapter/cable when connecting that microphone to your camera or recorder or whatever you used (undisclosed?)


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