what is the frequency response of the iphone speakers

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what is the frequency response of the iphone speakers

I've seen this question on other posts and seen that the asker was lambasted for assuming that you could create a good mix for the iphone. Honestly, that wasn't the question, and it's NOT the question here.

I produce videos for MMA productions, and on my latest videos, the commentary does not play if I play it on an iPhone. You can't hear it. You can hear kind of a static sound, but not the actual commentary. Test it yourself. Try playing this link through an iPhone (I have a 5SE) and then play it through the computer.

https://www.youtube.com/watch?v=rt-7kMnVcyI The commentary starts at 7 seconds, and then gets really loud at 17 seconds. Play it on an iPhone, then use headphones or ANY other speaker. All other fights on this same channel that were uploaded this month have the same issue.

Please don't comment on the ethics of MMA. The guy that got hit is OK. He just took a short nap. I am only interested in fixing the sound issue for my fans who watch on their phones.

The problem started the night we broadcast the event. Anyone who watched the Facebook feed on the iphone could not hear the commentary. I've tried changing to MONO. I've tried switching from 44.1k to 48k. I've boosted the volume. I've cut out every single other audio and isolated the commentary track (and you can hear crowd noise, but not the commentator). The only thing I haven't done is changed the EQ.

MacBook Pro, iOS 6.1.5

Posted on May 20, 2017 11:20 AM

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Answer 1

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NF2K

Level 1

4 points

Oct 13, 2017 10:50 AM in response to carmen86

Hi carmen86,

this post's a little late so maybe you already figured it out by now, but it might be useful to others. The commentary audio in that video is phase inverted (it's polarity has been switched) on one side, probably the right-hand side. Not sure how this would have been recorded/processed to cause this, but it's a quick fix in your audio editor usually. I guess google something like:

phase invert a single stereo channel in <whatever audio program you use>

Changing it mono like you've tried will (in most audio editors) cause the issue to occur on anything you try to play it back on - the commentary will have been cancelled out before it even made it to the final video. I assume Youtube is serving a mono version of the audio automatically to iPhone users.

Hope this helps

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