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Author Topic: Recording on a Smart Phone?  (Read 2281 times)

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Offline Hank Mardukas

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Recording on a Smart Phone?
« on: October 31, 2021, 12:38:31 PM »
I stealth tape quite a bit and love the idea of being able to record on my phone.  I've tested quite a few phones and apps with external mics and have found the following:

1.  Most phones don't support true stereo recording (some do)
2.  No apps support true stereo recording (they say they do but it's actually split mono)
3.  No apps support recording above 16bit/48kHz
4.  No phones support SPL above 100

I'm wondering if anyone has done any research on this topic and has come across a combination that works.  Ultimately I'd like a smartphone/app combo that can:

1.  Record in true stereo (not split mono tracks)
2.  Record uncompressed WAV at 24bit/96kHz
3.  Provides some gain control to allow recording of loud sources above 110SPL

Offline Fatah Ruark (aka MIKE B)

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Re: Recording on a Smart Phone?
« Reply #1 on: October 31, 2021, 02:22:24 PM »
dpa 4061 + dpa d:vice > iPhone/iPod Touch (won't work with Android).

Records 24 bit. Unsure if it's split mono or true stereo.
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Offline Hank Mardukas

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Re: Recording on a Smart Phone?
« Reply #2 on: October 31, 2021, 02:32:28 PM »
dpa 4061 + dpa d:vice > iPhone/iPod Touch (won't work with Android).

Records 24 bit. Unsure if it's split mono or true stereo.

Which iOS app are you using to record?

Offline relefunt

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Re: Recording on a Smart Phone?
« Reply #3 on: October 31, 2021, 02:33:32 PM »
Check out the Shure MV88.
AKG c414xls, Beyerdynamic MC930, Line Audio CM3 and OM1. Superluxe S502mk2
Sneaky: Church CA11+14, Audiotechnica AT853.
Preamps: Shure FP24, CA9200.
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my local taping blog: milwaukeetaper.com

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Re: Recording on a Smart Phone?
« Reply #4 on: October 31, 2021, 03:00:48 PM »
dpa 4061 + dpa d:vice > iPhone/iPod Touch (won't work with Android).

Records 24 bit. Unsure if it's split mono or true stereo.

Which iOS app are you using to record?

Apogee Metarecorder.
||| MICS:  Beyer CK930 ~ DPA 4022 ~ DPA 4080 ~ Nevaton MCE400 ~ Countryman B3 ~ Sennheiser Ambeo Headset |||
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Offline heva

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Re: Recording on a Smart Phone?
« Reply #5 on: October 31, 2021, 04:33:59 PM »
Sennheiser Ambeo headset, Apogee MetaRecorder and an iPhone

Offline yltfan

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Re: Recording on a Smart Phone?
« Reply #6 on: October 31, 2021, 04:36:20 PM »
Check out the Shure MV88.

That looks super clunky for stealth taping. Have you used it?
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Offline capnhook

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Re: Recording on a Smart Phone?
« Reply #7 on: October 31, 2021, 06:03:22 PM »
Check out the Shure MV88.

That looks super clunky for stealth taping. Have you used it?

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Offline Hank Mardukas

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Re: Recording on a Smart Phone?
« Reply #8 on: October 31, 2021, 06:24:48 PM »
dpa 4061 + dpa d:vice > iPhone/iPod Touch (won't work with Android).

Records 24 bit. Unsure if it's split mono or true stereo.

Can anyone confirm if this records in true stereo or split mono?

Offline cd2go

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Re: Recording on a Smart Phone?
« Reply #9 on: October 31, 2021, 07:52:11 PM »
Sennheiser Ambeo headset, Apogee MetaRecorder and an iPhone

Wow that headset looks really interesting if the quality is decent, any recording examples?

Offline Fatah Ruark (aka MIKE B)

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Re: Recording on a Smart Phone?
« Reply #10 on: November 01, 2021, 12:55:02 PM »
Sennheiser Ambeo headset, Apogee MetaRecorder and an iPhone

Wow that headset looks really interesting if the quality is decent, any recording examples?

I have this setup too. Here are a few samples.  The Superchunk set was at a particularly bad sounding venue and I was too close to the stage. The Pigface set was loud and not the best sounding venue (but not horrible). The Bob Dylan set was at a very good sounding venue, but I made the mistake of getting too FOB so there are chompers on the recording.

https://youtu.be/GFUxnnnS-GI

https://youtu.be/PwwyUtHx1zc

https://youtu.be/X3sHVgTBhOQ

||| MICS:  Beyer CK930 ~ DPA 4022 ~ DPA 4080 ~ Nevaton MCE400 ~ Countryman B3 ~ Sennheiser Ambeo Headset |||
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Offline roffels

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Re: Recording on a Smart Phone?
« Reply #11 on: November 02, 2021, 10:45:30 AM »
I tried using a line-in adapter with an iphone 4s - it recorded stereo, 24-bit 48KHZ but unfortunately picked up some digital interference that would pulse about every 10 seconds, making the recording unusable. I haven't tried to isolate the issue.

Offline Ozpeter

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Re: Recording on a Smart Phone?
« Reply #12 on: November 08, 2021, 07:18:51 PM »
AI-Micro from Rode is on its way to me... I shall report in due course.

Offline hoyt

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Re: Recording on a Smart Phone?
« Reply #13 on: December 16, 2021, 07:44:29 AM »
Found this thread looking for similar info.  I'll be using an iPod touch with metarecorder on Friday, but I'm a bit concerned about the quality of my battery.  Is there an equivalent on Android that would work with a class 2 usb connection?  Just wondering for a backup option.  Thanks!
dpa4028/4023 > v2/sx-m2d2 > 744

Offline dactylus

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Re: Recording on a Smart Phone?
« Reply #14 on: December 16, 2021, 12:35:49 PM »
dpa 4061 + dpa d:vice > iPhone/iPod Touch (won't work with Android).

Records 24 bit. Unsure if it's split mono or true stereo.

Can anyone confirm if this records in true stereo or split mono?


You should download the MetaRecorder User Guide

https://apogeedigital.com/pdf/MetaRecorder-User-Guide-may2016.pdf


Scenes > Scene Settings > Input Channel Config

Tap the desired input channel configuration.

The configurations available for selection are determined by the audio hardware in use. For example, when
using the iPhone’s internal mic, only the Mono (Left) config may be selected.

When audio hardware has two input channels (such as Apogee’s ONE, Duet, DPA d:vice, then any config may be
chosen:


Stereo - Records both hardware inputs into one stereo audio file.

Mono (Left) - Records the left input into one mono audio file.

Mono (Right) - Records the right input into one mono audio file.

Dual Mono - Records each input into its own mono file.

« Last Edit: December 16, 2021, 12:43:24 PM by dactylus »
hot licks > microphones > recorder



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Offline kindms

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Re: Recording on a Smart Phone?
« Reply #15 on: December 16, 2021, 01:06:01 PM »
RE: metarecorder

any experience with CAF ? just wondering if its widely supported in DAW like audacity or similar (PC user)
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Offline WiFiJeff

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Re: Recording on a Smart Phone?
« Reply #16 on: December 16, 2021, 03:22:52 PM »
With metarecorder I always use CAF recording at 96 kHz from a DPA MMA-A, because my files generally run 3-7 hours (the iPhone battery limits me to 9-10 hours, but I've never run that long).  Audacity will let me split CAF files into smaller (< 4G) files that can be exported as 96 kHz .wav files. My editing programs (older
Wavelab, iZotope Rx) will not handle CAF directly.

If you try to record broadcast wav and it runs over 2GB the recording will just stop and you'll lose the later material.

Jeff

Offline grawk

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Re: Recording on a Smart Phone?
« Reply #17 on: March 08, 2022, 01:26:50 PM »
I tried using metarecorder with my mma-a last night at goose, 96/24 CAF, and it stopped recording at about an hour and 3 minutes.  Is this a known bug, or did I screw something up?

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Re: Recording on a Smart Phone?
« Reply #18 on: March 08, 2022, 02:18:45 PM »
I tried using metarecorder with my mma-a last night at goose, 96/24 CAF, and it stopped recording at about an hour and 3 minutes.  Is this a known bug, or did I screw something up?

I think that 1 hr. 3 min. is likely the time it gets to 2GB at 24/96 which is what most recorders use as a max file size. In handheld recorders, it usually automatically starts a new file, but not sure that happens in metarecorder. I would start looking there.
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Offline Fatah Ruark (aka MIKE B)

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Re: Recording on a Smart Phone?
« Reply #19 on: March 08, 2022, 02:32:34 PM »
With CAF it should keep going after 2GB, so not sure what happened. You can always back it down to 24/48 to reduce the chance of making it to 2GB.

Probably a good idea to run some tests prior to your next show. Let us know what you find if you do. I love the idea of such a small stealth setup, but I'm still not 100% comfortable with reliability. I'd really like to get to the point where I can just get wired up, fire up the recording 15 minutes before the band comes on and just know I'm going to have a good recording once the show is over.
||| MICS:  Beyer CK930 ~ DPA 4022 ~ DPA 4080 ~ Nevaton MCE400 ~ Countryman B3 ~ Sennheiser Ambeo Headset |||
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Offline WiFiJeff

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Re: Recording on a Smart Phone?
« Reply #20 on: March 08, 2022, 03:01:46 PM »
I regularly use metarecorder with the MMA-A at 24/96 for CAF files many hours long (usually 4-6), 10 GB.  The metarecorder software insists on resetting to 48 kHz broadcast wave after each erasing of the previous recording. so I end up having to reset the choice to CAF and 96 kHz each time.  Did you actually record a CAF file that stopped at the 2 GB limit?

Offline grawk

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Re: Recording on a Smart Phone?
« Reply #21 on: March 08, 2022, 03:03:40 PM »
it actually stopped at 2.19GB, oddly enough.  I do have 170gb free on my phone, so it wasn't out of space.

Offline morst

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Re: Recording on a Smart Phone?
« Reply #22 on: March 09, 2022, 03:26:31 AM »
it actually stopped at 2.19GB, oddly enough.  I do have 170gb free on my phone, so it wasn't out of space.
2.19 GB is ~2.039 GiB because a Gibibyte is BIGGER by a factor of approx 1.07x.

I was horrified and fascinated to learn about this from my drive speed test app.

Gigabyte (GB)   1000³ = 1,000,000,000
Gibibyte (GiB)   1024³ = 1,073,741,824

OK it's short for "gigabinary" just learned that right now from the wiki, under "history of the conflicting definitions"

https://en.wikipedia.org/wiki/Byte#History_of_the_conflicting_definitions

Offline grawk

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Re: Recording on a Smart Phone?
« Reply #23 on: March 09, 2022, 10:07:53 AM »
first set stopped right at 2gb, in broadcast wave.  CAF one stopped at 2.19.  So I think something else is going on.

Offline DavidPuddy

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Re: Recording on a Smart Phone?
« Reply #24 on: March 09, 2022, 03:17:54 PM »
I ran my Rode AI-Micro for 3 hours today with no issues in CAF format (3.12 gb)

 

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