Although the Nexus 6 has 3 microphones (one built in the bottom speaker hole, one on the back plate close to the Micro USB port, and one next to the back camera lens), it looks like audio is always recorded as mono when shooting video. Furthermore, the audio is always captured from the front mic in the speaker hole, which means that it takes the sound from the opposite side of the camera lens.
I've also tried with other camera apps (such as Cinema FV-5 which allows to select between mono and stereo audio) but the audio is recorded mono anyway.
I've then checked the file media_profiles.xml in /system/etc/ and found out that basically all different resolutions had channels="1" , which means that only one (mono) audio channel is recorded.
I've tried to change channels="2" and rebooted but still all audio was recorder as mono and from from the from mic instead of the rear mics.
Any ideas on how to get stereo audio recording?
springer.music said:
Although the Nexus 6 has 3 microphones (one built in the bottom speaker hole, one on the back plate close to the Micro USB port, and one next to the back camera lens), it looks like audio is always recorded as mono when shooting video. Furthermore, the audio is always captured from the front mic in the speaker hole, which means that it takes the sound from the opposite side of the camera lens.
I've also tried with other camera apps (such as Cinema FV-5 which allows to select between mono and stereo audio) but the audio is recorded mono anyway.
I've then checked the file media_profiles.xml in /system/etc/ and found out that basically all different resolutions had channels="1" , which means that only one (mono) audio channel is recorded.
I've tried to change channels="2" and rebooted but still all audio was recorder as mono and from from the from mic instead of the rear mics.
Any ideas on how to get stereo audio recording?
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Click to collapse
First of all, I do not have access to a Nexus 6, but I recently made a stereo recording mod available as part of my "larger" Nexus 5 camcorder audio fix over in the Nexus 5 General section.
On hammerhead, the spatial aspect of the stereo recording is surprisingly impressive (although one channel suffers from some "coupled noise").
It helps a lot that the two microphones seem to be of the same make and model (according to the LG service manual). It is also advantageous that the two microphones are symmetrically
placed on the sides of the phone, where scattering and diffraction effects help with spatial separation.
To me it is not clear whether the same level of spatial effect can be achieved with the Nexus 6, but it is worth a try.
I took a quick look at the mixer_paths.xml file where additional edits to enable stereo recording would be required. I can probably help you in getting some form of dual-microphone
recording to work, but there is likely some back-and-forth testing and manual system file editing required. Shoot me a PM if you are interested in pursuing this.
@chdloc has found the solution to this (thanks!)
Here's the thread on how to enable stereo audio recording:
http://forum.xda-developers.com/showthread.php?t=3001680
Does anybody have this issue when recording a video in say a concert, night club or even your car with loud music on.. the video will playback fine.. however the audio will be really distorted and you can literally hear nothing but fuzz and base.
The Huawei p9 plus has been my first android phone from Apple in the last 4 years, and really like everything about it.. would be a shame if this was an issue that could not be resolved, i had read somewhere online it's due to the huawei having 2 microphones ...
Any help is appreciated
I'm sorry to disappoint you. While my Note 4 made pretty decent video recordings (sound wise) my P9+ is horrible and absolutely useless for recording live music. I haven't found a solution yet other than moving away from the music...about half a mile
My P9plus VIE L09 records audio WONDERFULLY ! It's almost on par with Nokia 808 Pureview, which is fantastic. Audio is recorded undistorted even if you put the smartphone against high levels of sound (close to a loudspeaker for example). I tested and it is really great.
Strange, very strange. I stopped using my P9+ in loud places because of the terrible audio quality. I had my device send in to a Huawei service center. They returned it saying nothing was wrong.
I added a file to demonstrate the distortion in a loud place. It's a zipped mp4 file.
P9plus recording @ over 100 dB
I put the phone at 10 cm in front of one loud (over 100 dB) loudspeaker(Studio monitor JBL LSR 4326) with top microphone to the tweeter and bottom to the woofer, centered in the middle on axis. I could easily go higher in level but already hurt my ears next to the speaker, it was very loud. There is absolutely no distortion. Recorded with stock Huawei's recorder (.mp4 16 bit 48KHz). Sound recorded on camera videos are the same (very clear, detailed and no, no distortion).
Phone stock firmware, VIE L09.
raduverdes said:
I put the phone at 10 cm in front of one loud (over 100 dB) loudspeaker(Studio monitor JBL LSR 4326) with top microphone to the tweeter and bottom to the woofer, centered in the middle on axis. I could easily go higher in level but already hurt my ears next to the speaker, it was very loud. There is absolutely no distortion. Recorded with stock Huawei's recorder (.mp4 16 bit 48KHz). Sound recorded on camera videos are the same (very clear, detailed and no, no distortion).
Phone stock firmware, VIE L09.
Click to expand...
Click to collapse
it is like a studio recording )
i will try live record thursday in studio (with my band) and upload here.
Yes, very good mics in P9plus. That song was a compressed mp3 and speakers yelling loud but recording is good and not distorted. You can use your smartphone for interviews for example with very good results. Outdoor it picks up wind but as a trick you can wrap the smartphone in one microfiber cloth and, voila, wind removal (only for audio, not video)
@raduverdes, sound distortion in concerts is very often related to bass levels. Your track contains almost no low-mid and bass, it's mid's an high's and that's probably the reason why it sounds good. In the EW&F track is a lot of bass and combined with the high volume the recordings on my p9+ sound very bad.
@Ce Your (very very short) sample recording is very saturated and distorted. I compared Huawei p9 plus mics with Nokia 808 Pureview (with it's Nokia rich recording technology, supporting sound pressure up to 140 dB according to Nokia) and Huawei keeps up very well against my 808 Pureview, almost as good. Nokia 808 is probably(i'd say, surely) the best audio recorder in the smartphone world so I'm very happy with output quality of Huawei P9 plus. Huawei supports very high levels of pressure without breaking a sweat, similarly to Nokia 808. Recordings are very clean and clear for a mobile phone.
I highly recommend you don't stay in very very very loud places if you want to keep your hearing. Don't listen to music (speakers /headphones) over 80-85 dB for long periods of time. I earn my living with my ears and probably the last thing I want is to go deaf.
You probably don't get better sound recording from a smartphone at the moment, it's way better than iPhone 6s, Samsung S7, LG G5, Xiaomi or whatever flagship smartphone, I listen to lots of audio samples on YouTube before purchasing my P9plus.
Sample recording P9plus @ Grado SR80e & Samsung Tab S 10.5
Here is a sample recording using Grado headphones feed by Samsung tablet (no amp but at max volume) ; stock recorder app, mp4, 128kbps, 48KHz. A little too much mids and highs, I know but you get the image. I think it's very good for a smartphone.
At 1:40 I received a message on my tablet
I made a video test recording at INSANE level (I think over 120 dB) very close to the speaker and yes, it's awful, distorted. I don't want to be in such loud place for sure. At 1-1,5 meters away (~105-110 dB sound level) recording is good, undistorted . So, I'd say Huawei P9plus is wonderful /good in normal to LOUD places and bad/unusable in INSANE, STUPID LOUD places. It's smart enough not recording stupid things.
Hi!
I'm very interested in this thread. I'm just trying to find a successor for my HTC M8, years ago the only android phone that could handle loud sound recordings.
I found this video of Huawei p9 (one of my favorites), and I really impressed about the quality (powerful bass by FunktionOne speakers)
https://www.youtube.com/watch?v=7hAiQplKXls
BUT, reading your comments I'm not sure if this video is true, especially after watching this video of one of you. It's horrible!!!!!
https://forum.xda-developers.com/showpost.php?p=69942999&postcount=4
Maybe some software update??? If someone can confirm that the quality of the first video it's true, tomorrow I'll buy the P9 :laugh:
Thanks!!!
Anyone facing this issue on this device? As stated in the title, it gets distorted when the sound recorded is very loud. Used to work well on my LG G4 and Xperia Z though. Even in normal condition, the quality of the sound recorded is not very good too compared to my previous phones but is considered bearable. After some research, I found that this problem is called audio clipping and already existed since the OPO. I wonder if there is any fix to be done in software like editing the mixer_paths.xml.
Edit: Tried HI-Q MP3 Recorder with raw audio selected in mic selection which means there will be no processing at all (no noise cancellation) and it sounds good surprisingly so is there any way to completely disable this noise cancellation thingy?
I've got the same issue. Recording via OP Camera app, a lot of distortion is in the audio, along with Snapchat too. Using the stock Recording app shows crystal clear audio.
thes3usa said:
I've got the same issue. Recording via OP Camera app, a lot of distortion is in the audio, along with Snapchat too. Using the stock Recording app shows crystal clear audio.
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Click to collapse
Exactly, noticed this issue when recording high volume audio with snapchat.
Diatomix98 said:
Edit: Tried HI-Q MP3 Recorder with raw audio selected in mic selection which means there will be no processing at all (no noise cancellation) and it sounds good surprisingly so is there any way to completely disable this noise cancellation thingy?
Click to expand...
Click to collapse
Cool, tried the app and the raw mode as suggested. The recording quality is so much better, unbelievable.
It would be great if we could set such a raw mode as default for all recordings (incl. the stock Camera).
Perhaps there is a wise developer around who could help out? Just dreaming...
Man I thought I was the only one dealing with this because I have yet to find a fix for it. However for me it only happens on AOSP/LIneage based ROMS. When I'm on Oxygen OS or Oxygen based ROMS like Freedom OS recording works just fine. It seems to be connected to "Ok Google" functionality because that also stops working for me too on custom ROMS. Ironically it will trigger it initially for me to train my voice model but once I do it stops responding.
Good camera app to use.
I also experienced distortion when trying to record video at a concert. I found an app in the play store called Open Camera. It has an option to record audio unprocessed. I haven't tried it yet in a concert setting but maybe someone will see this and try it. Since many are saying recording with raw audio fixed the distortion issues.
use xiaomi max2 to record a video In the video, there will be real noise, like the sound of space, muffled voice. it will have a noise of sound when recording video, it sounds like sound of water or wind, but there is no water flowing environment beside me. What is the problem like this, How to solve it, thank.
My phone's miui is miui9 stable 9.0.2
I recently went to a couple of concerts and recorded some videos of the shows, all of them had terrible audio, I can't really describe it but it's absolutely terrible compared to every other phone I've ever had.
Actually I am having some audio recording and audio in video recording quality issue. It seems to be that the real sound is trying to noise cancel. I think this is for aggressive noise cancellation. But I can't fix this. Even I rooted and changed to many rooms but all are same. Is there really no fix for this issue? At first the audio is clear for 1 or 2 seconds but after that the noise cancelling starts.
Look at this demo of my records...I don't know how to attach files so I am putting a Google drive link....
https://drive.google.com/file/d/16Vp_A8t_eriIY64Vyv_wsd2k0PLEfi55/view?usp=drivesdk
Go to the link and see the recording quality and plzzz help me... I can't record in
this type of recording quality please help me fix this problem .
I think its fine the audio. But just change the audio recorder to another one