Android :: Poor Audio Quality Captured From Microphone With MediaRecorder / Implement Them?
Aug 11, 2009
I've implemented "Audio Capture Setup and Start" example (http:// developer.android.com/guide/topics/media/index.html) with small modification - the output format is MPEG_4 not THREE_GPP.
The result - records with extremely poor audio quality.
Could you help me to understand where is error and how is possible to do really good audio records with Android?
I've done an experiment with Camcorder - standard Android application. Sound quality of the video is same poor. The audio signal is extremely low (quite).
Is it "by design" or may be some hardware problem (T-Mobile G1)?
I've found description similar problem here - http://osdir.com/ml/AndroidDevelopers/2009-06/msg00752.html - "Microphone audio capture with emulator is of very poor quality". In my case this problem reproduces on the real device. Unfortunately I have not found answer. I read about some "custom" encoders.. but have not found any example how implement them.
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Jun 2, 2009
As a first step toward a speech recognition project, we wrote a simple voice recording application based on the information in this thread: http://groups.google.com/group/android-developers/browse_thread/threa...
It is working; however, the audio is extremely poor -- too staticy for our needs code...
As a comparison, here is a similar audio file captured with audacity on a PC: http://juzzam.org:9090/myAudioFile_onPC.mp3
Has anyone been able to record high quality audio with the emulator? If not, is it any better on the android dev phone?
According to the documentation of MediaRecorder, there is only one audio encoder "AMR (Narrowband) audio codec" and three output formats--3gpp, mpeg, and raw AMR: http://developer.android.com/reference/android/media/MediaRecorder.html
Here is the Activity source: http://juzzam.org:9090/RecordMicrophone.java.txt
We are testing on Windows XP, with a Logitec USB microphone, eclipse ganymede, and we are using all the defaults for an android 1.5 app (no emulator command-line options.. we defined the sdcard in the avd manager).
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Mar 24, 2010
I have the N1's dock connected to a pair of M-AUDIO AV-20 speakers and the sound quality is less than enjoyable. The question is, does the phone get connect to the dock through bluetooth? I would expect a much better audio quality from ANY Dock.
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Aug 23, 2010
I am trying to listen to pod casts on my DX while it is charging via USB. For the first 5 minutes or so it works great but then I start to get static. The static goes away as soon as I unplug the USB cable. Same thing happens in the car while listening to pod casts and plugged into my car charger.
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Jun 24, 2010
How is Bluetooth audio quality with your Evo? I'm using a Jabra Extreme earpiece and am experiencing poor audio quality. One person with whom I was speaking said that I sounded like I was running or was in a windy location (I was calling from a quiet hotel room). On my end there was noticeable static. As a test, I hung up and paired the Jabra with my Blackberry 8830, and the person with whom I was speaking said that I sounded a little distant, but otherwise clear. On my end, the audio quality was good.
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Sep 9, 2009
i am capturing video with the code below. But there is problem on video quality, that is, when I capture video with applicaiton I wrote its quality is not as well as video quality of telepohnes' which is recorded by Camcorder...................
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Jul 23, 2010
I use to own a palm pre before I switched to HTC EVO. I think the evo is a great phone but the two things I missed so much about my palm pre is the camera and the sound qualities.
The EVO is said to use 8MP for its camera but honestly the camera quality is nothing compare to the palm pre. Simply put, the camera and the sound output on the evo sucks.
You can clearly notice the difference between the pictures I took using the pre and the evo. The pre gives far better picture quality and also better sound output. I always enjoy plays my sounds or using pandora on my pre, but with the evo the different is the case. The sound quality with the evo is horrible even when plugged to good speakers.
I bearly take picture with the evo because I am used to good picture quality with my pre.
I have had the evo for less than two weeks and i am seriously thinking of returning it because of these two issues.
I really want to know, is this poor picture and poor sound qualities a thing with the evo in general or is it just with the particular evo that I got.
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Feb 11, 2009
Is anyone else experiencing poor playback quality on files recorded with MediaRecorder? Is there a way to improve this?
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Jan 28, 2010
Is there a way to get the best quality of video recording possible using MediaRecorder? the camcorder app does a lot better in terms of quality.
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May 26, 2010
I (like hundreds of others) have had a call quality problem with the two Droid Incredibles I purchased for my wife and myself when they were released on April 30th. Verizon recognized that there was a problem and replaced both devices with ones manufactured about a month later (5/02) and the same issue with poor voice quality continued.
We love the device EXCEPT for the lack of ability to understand callers. So, I asked Verizon to extend our 30-day opt out to give them an opportunity to work out the issues with this device. I just received a call from Verizon customer service (which I could barely understand) and was told they would not extend the 30 day period and my option was to live with the poor sound quality or switch to another device. Verizon has no other devices that were interested in at this time so well be canceling these two lines (and one other) and returning to T-Mobile. T-Mobile may not have the best coverage, but they do have great customer service, unlike Verizon.
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Jan 29, 2010
I am looking to develop an application and would like to know if the earpiece audio output can be captured.
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Aug 20, 2009
I am not able to see video preview. Here is is how I set up the MediaCorder, before I fire it up code...
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Jun 6, 2014
I have just switched my phone from Iphone5 to Note3. I love the phone it's big bright screen very thing is nice. I am also a video freak I like to take a lot of video of my dogs on post it on Facebook. After a while I return to the video I uploaded it and the quality of the videos was CRAP!! I have no clue what I did wrong or what option I didn't choose. I went into the menu to see if I have checked on the UPLOAD HD VIDEO option like on iphone. There is no option to choose.....
Does this issue happen to all android device or just SS note3
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Nov 23, 2009
I've read a lot of posts in this group regarding raw audio processing. Most of them include references by Mr. Sparks about support for this in "future releases". I hope maybe he was referring to Android 2.0? To be clear, all I want to do is obtain audio data from the microphone in as high a fidelity as possible to perform DSP against it. This is blissfully outside the realm of any DRM-laden audio output issues (I hope).
So, in short, can we get raw audio off the microphone using Android 2.0 and a Droid, for example?
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Sep 28, 2010
How do i get access to the audio recorded by the microphone before it is accessed by the other applications.
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Oct 20, 2010
Is there anyway in android to loop a recorded audio through microphone. I mean that instead of speaking in microphone, i should be able to send a recorded audio from code into it.
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Jun 5, 2010
Does anyone else have very poor call quality with their EVO? I have 2 EVOs and both have a tinny sound
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Jan 17, 2010
I have searched the whole group but wasn't able to find a answer for my problem.I want to record audio from the microphone, apply some audio signal processing and than save the processed audio data in a compressed format.I figured out, how to record audio uncompressed but now I wonder if I can use some api functions to store this data in a supported compressed format.
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Apr 22, 2009
we're a group of students and trying to implement some kind of voice cryptography over a gsm connection (without modifing any gsm related codecs, we render pure audio which gets transmitted via gsm). Is it possible to initiate a voice call and transmit our generated audio signal (means bypassing the microphone as the primary audio source for that call)? I write this because I'm slightly worried after reading some posts on this list/group which states that the android.telphony APIs are private and can't be called from processes outside the the telephone subsystem.
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Jun 19, 2010
1st. Are our phones (HTC Incredible) capable of digitally recording audio from a mic? For example, can I plug a microphone into the 3.5mm jack and start recording the audio. (given the hardware is capable) Which leads me to my next question, if so, is there an app for it? I searched and searched but couldn't find much info on it...
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Sep 29, 2009
Is possible to inject audio such as mp3 in the output of microphone streaming? I've found an application : spoofApp that change the voice during a call. How is possible?
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Jun 6, 2010
Very pleased so far. Still need to learn Android. I was wondering is the youtube video quality poor on the EVO or Android in general? I'm so used to my old 3GS that was jail broken, the quality was excellent.
But now they all look so choppy on the EVO.
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Nov 1, 2010
Is my speaker blown or does anyone else have a problem with the qound quality when playing anything through the external speaker on KaosFroyo? Everytime I play any music or even a rng tone through the speaker it always sounds tinny and distorted. Everything sounded great before when I had the stock 2.1 Firmware.
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Jan 6, 2010
I have both a Droid and a Nexus One. I have both of them set up for VoIP calls, and both are set up the same way. Here's how I set them up:
How To Set Up VoIP on the Nexus One Google Phone using Sipdroid for Free Calls | Dave's Tech Shop
How To Set Up VoIP on the Motorola Droid on Verizon Wireless using Sipdroid for Free Calls | Dave's Tech Shop
The call quality on the Nexus One is much worse than the Droid. I did repeated tests with both. And I used WiFi, so it can't be a difference between VZW and T-Mobile.
Anyone else tried VoIP on the Nexus One yet? I wonder if I have a defective phone or if this is a bigger issue.
The VoIP call quality problems are worse when using a headset on the Nexus One! VoIP quality on the Nexus One is marginal to poor without a headset, but with a headset it is unacceptable. I have tested four different headsets now. I have also tested those headsets on the Droid, and they are good. So the problem is the Nexus One, not any particular headset. My first thought was that I had a bad headset jack. However, after more trouble shooting I tend to think its not as simple as that. Music sounds fine through the headset. It is only VoIP sound that sucks when using a headset. The problem is so bad that phone calls using a headset are not workable.
Summary of Nexus One and VoIP:
* VoIP sound quality is marginal on WiFi with no headset.
* Music sound is good with headset on Nexus One.
* Headsets I'm testing with are good with VoIP and music on Droid.
* VoIP on Nexus One with a headset has poor sound quality.
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Mar 8, 2010
Is it only possible for one object to access the microphone at a time? That is, could I simultaneously use an AudioRecord to do some audio processing and use a MediaRecorder to record the incoming audio?
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Oct 13, 2010
How can I get the volume of the audio stream coming in through the android microphone?
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Oct 11, 2010
I am trying to understand how to go about determining the frequency of various sounds captured on the phone via microphone. I am attempting to display a graph plotting the frequency of the note.
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May 13, 2010
So far I have had bad luck with the signal/call quality. This is not just me not liking the number of bars but actually loosing all signal, not being able to make or receive calls, and it draining the crap out of the battery.Facts:
1) When outside, in my car, near the windows in buildings, the call quality is great
2) A Moto Droid in the same office gets acceptable signal and call quality
3) This is an issue anytime I'm in a building; Lowes, Walmart, the pet store, a mexican resturant... anything larger then my house.
4) My old iPhone never a problem in all of these places.
5) The side affect is it kills my battery life. I purchased the seido extended battery and it is always down to 30% by the time i leave work at 5pm (10 hours off the charger) On the weekends it lasts 40-60 hours no problem.
After talking with a Verizon Tech she told me they would send me a new phone. But due to the back order I won't get it before the end of the month. Which scares me since that puts me out of the 30 day return policy. So I asked her about that and she said this would extend it another 30 days. Which I wish I had in writing but heres for hoping this works because I love the phone when it works
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Aug 9, 2010
I now understand that the strange red-eye housing over my camera lens, which looks so much like an android (or maybe an HTC engineer) after a long night of drinking, is purported as protection for the actual lens. Why HTC didn't just settle for a sliding blackout cover instead of this bulky lesion is anybody's guess. I know that it's relative permanence over my lense will certainly not protect my photos from any dirt and scratches which this protector picks up, so I have been extremely careful to keep it clean and un-scratched. What I suspect is that this lens cover may be responsible for some of my camera quality issues, such as high noise, a reddish tint which tends to flicker on and off, some periodic jerking of the autofocus (flashing out of focus) when you are hardly moving, and indoor shots which are much, much darker than life without the flash. Hey, I get that this camera, no matter how many megapixels they can list, doesn't come with a world-class sensor, but I would like to know from anyone with a background in photography what they think of my concern that even a clean, transparent cap can reduce the amount of light entering the actual lens, while adding its own reflective noise. The same with the opaque cylinder which surrounds the lens (the red eye housing), from a photo-quality standpoint is looks to me like it's only good for cutting the light. If removing this cover would make a significant difference, then it may still not be the best solution as it leaves the lens at risk, but I am still interested in any qualified opinions on how much this red-eye housing causes, if any. It may be good for the future of smart phone design if they see that they have educated consumers, who are paying attention to such possible problems.
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Aug 18, 2010
Does anyone else get poor quality out of their voice recordings? Audio on calls and on recorded video are perfect but voice memos have static.
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