Poor audio quality captured from microphone with MediaRecorder

by alex.tchumel » Wed, 12 Aug 2009 06:39:15 GMT


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 Hi!
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.

Thanks in advance,
AT

--~--~---------~--~----~------------~-------~--~----~



Poor audio quality captured from microphone with MediaRecorder

by alex.tchumel » Wed, 12 Aug 2009 06:39:16 GMT


 Hi!
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.

Thanks in advance,
AT

--~--~---------~--~----~------------~-------~--~----~


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