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Iphone on-board mic differences

So I never really thought about it but the on-board iphone mics (there are multiple) are all slightly different sounding. Wondering if anyone knows what most apps default to or if they use all three? A few apps like multitrack DAW (harmonicdog) let you select. Theres definitely a difference between them all

Not sure if there's a quality (hardware) difference I'm hearing or its just the direction/placement of the different mics.

Thoughts or knowledge about this?

Comments

  • Don't know the answer but am definitely interested in the question!

  • Sorry I dont know the answer, but am also interested ! What was the application you want to use the iphone mike for? I was just about to post a topic question regarding ipad and iphone mics versus the various add on mics by zoom and rode etc. I want a compact convenient field recording and acoustic instrument solution. I think the iphone mics are ok quality overall, and the ipad and especially ipad pro are better still, and are ok for sampling, think the specification must be different between the devices, not sure about the differenMy question is for anyone who has an opinion over iOS lightning connector mics, as there doesnt seem to a major improvement over the onboard mics, unless you use separate preamps etc. I hope some more knowledgable than me shows up!

  • The Rode iXY is loads better than the built in mic, it’s stereo as well. I use mine more than my studio mics these days, just easier to carry around.

  • edited May 2018

    Well most mics are gonna be better than the on-board mics but I'm just saying there's multiple mics on the iPhone and I think they sound different. So far the bottom one sounds like it has the least white noise (possibly the phone electronics making noise) and best frequency range but I'll continue testing

    So far multitrack DAW (harmonicdog) is a the only app that let's you pick. So you can test as well if you're interested

    MultiTrack DAW by Harmonicdog
    https://itunes.apple.com/us/app/multitrack-daw/id329322101?mt=8

  • @Panthemusicalgoat said:
    Well most mics are gonna be better than the on-board mics…

    Why is that the case?

  • edited May 2018

    @Panthemusicalgoat said:
    Well most mics are gonna be better than the on-board mics but I'm just saying there's multiple mics on the iPhone and I think they sound different. So far the bottom one sounds like it has the least white noise (possibly the phone electronics making noise) and best frequency range but I'll continue testing

    I was thinking the bottom mic should be of the lowest quality because it is meant for just phone conversations (a basic mono mic)

  • @u0421793 said:

    @Panthemusicalgoat said:
    Well most mics are gonna be better than the on-board mics…

    Why is that the case?

    Just as the built-in speaker is of tinny quality in any phone/tablet/computer, the built-in mic is also of a very basic quality in any phone/tablet/computer. A2D and D2A converters (ADC & DAC) have been the same for decades in these devices which one of the reasons why external speakers and mics exist. Even the external mic in iPhone's earbuds or a $10 mic gives a better quality audio recording compared to the built-in mic.

    AVL (audio, video, lighting):

    • Audio -> users can tolerate a poor video but will not forgive us for poor audio - this is most important!
    • Lighting -> even the best camera records mediocre quality video in bad lighting - lighting is more important than a good camera
    • Video -> we can use any smartphone with a good lighting (a state-of-the-art camera is not necessary for most situations) - this is of least importance compared to audio and lighting
  • edited May 2018

    @powerobject sorry, your generalization is plain wrong.
    There's a wide variety of MEMS microphones (as used in mobile devices) on the market.
    Some go up to the $10 price (if ordered in 1k qty), which is huge fir a single part.
    https://www.edn.com/design/analog/4430264/Basic-principles-of-MEMS-microphones-

    The mic in the Air-2 can deliver an effective signal to noise ratio of 60dB and a nice spectral response if used in 'measurement mode' setting of IOS (no bass rolloff, no auto gain).
    That it performs worse than an external headset one is based on placement/direction.
    In optimal adressing position you can hardly operate the iDevice as it's tilted back from you, so many people just put it anywhere on a table.
    You wouldn't speak or sing at a studio condensor pointing at your belly either ;)

    I've made these test recordordings with an Air-2 without trying to hide any vocal flaws.
    (yes, I'm no singer, but it's fun...) o:)
    raw take as captured by the iPad

    some postprocessing with Antares Mic Modeller and loudness improvement, no reverb or eq, a regular room. Target was the influence of the modelling software, so there's no coloring by compression, just the regular limiting I usually apply.

  • The 3 internal mics are driven by iOS software in a rather specific way and probably mixed to a 'good' general balance.
    For video they likely focus on the backside mic, which is covered when the iPad/iPhone is placed on a table.
    The interesting part about the MTD screenshot is that you can select 1 of the mics, but not capture all 3 on separate tracks. That's why they aren't exposed generally.

  • I don’t see why a high-end iPhone or any other top-end flagboat phone can’t under the correct circumstances outperform a dedicated mic – either the special condenser arrangements such as the many Blue ones and Shure MV5 and the like etc, or a handheld or pencil type.

    The three-mic arrangement in the device is primarily for active cancellation.

  • @u0421793 said:
    I don’t see why a high-end iPhone or any other top-end flagboat phone can’t under the correct circumstances outperform a dedicated mic – either the special condenser arrangements such as the many Blue ones and Shure MV5 and the like etc, or a handheld or pencil type.

    This is one of the reasons that the IPhone cameras are so good — they have a heavy software component that enhances the hardware.

    The three-mic arrangement in the device is primarily for active cancellation.

    Do we know if we get this processing when using, say, AUM to record?

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