AUDIO: Dialogue garbled ONLY on mobile device

[Tom Thistlethwaite]

I had this problem too – and it does appear to be a phase issue from a mono source split into an out of phase stereo pair when recorded. With headphones or speakers you don’t notice it, but when an iPhone recombines the two to play out of it’s mono speaker I think you get the garbling. By deleting either the right or left channel and then centre panning it, the problem should be solved.

[Kaileen Fitzpatrick]

This is most likely a phase issue. I just worked through this same problem tonight, thanks to Brian Collins, who said this:

“I have a client who did a short video on their own and ended up doing the same thing. The clip sounded fine on his computer but almost no sound when posted online. The reason it sounds fine on your PC is that you are listening on a stereo setup. Two discreet audio feeds are being sent to separate speakers. At the showing, the PA setup was mono. They summed the two audio channels into on signal path and the two channels canceled each other out.
Think of it this way… an audio signal is a wave. If both channels are phased correctly, the two channels will simply be added together with no decernable effect. If the two are out of sync, the equal but opposite signals will cancel each other out. 1-1=0. Capiche? The problem is figuring out where one of the signals got reversed. It could have been done when you edited the program. It could have been a impropperly wired cable at your client’s presentation or the audio guy could have reversed the phase on one channel on the pa system….”
https://www.videomaker.com/forum/topic/audio-channelscancelling-each-other-out

I had all audio recorded on one day out of phase with itself. so these particular audio clips would not play back in my video, but many others would and of course the soundstrack and effects. What i did, in Premiere CS6, was take my stereo out-of-phase-with-itself audio tracks and panned them hard left, soloed the tracks, exported a mono aac (audio only), re-imported that into premiere and just settled for the mono voice-over.

hope this helps.

Kaileen

[Toby Younis]

This video explains a similar problem I had, and how I fixed it.

https://www.youtube.com/watch?v=biVunP5Fi-o

[Wardell Parker]

Okay, this problem has a deeper weirder side … perhaps part of some government conspiracy.

I’ve captured a program live with Wirecast Studio while simultaneously recording to tape on a Sony DVR
The entire program auto posts to my YouTube channel and plays just fine on desktop and mobile.
I play a small section of the program from the Sony DVR tape and use Wirecast Studio to capture it to the hard drive
I upload that small section and the audio plays just fine on desktop … but sounds garbled when played from mobile.

Explain THAT!

PS: The Truth is Out There!

[Shane Ross]

How high are the audio levels? The mobile device might not be able to handle the volume level. This is why we have standards as to how loud audio can be..because it can cause some devices or TVs to distort.

Shane
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