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it's possible to get or to measure the call quality during a voice call in Android?

The ideia is to know the distribution of quality audio during a call by location.

jlopes
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You mean the kb/s of the audio signal? " call quality" is something that differs per person IMO. Background noise cancelling has a huge impact on call quality for example, but not on the kb/s.

Clippy
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You need to define a specific metric for call quality. It could range from anything to anything, really: number of dropped frames, signal to noise ratio (not sure how you would get it), spectrum analysis, something subjective like a study and so on. Usually, the result will be a multi-dimensional feature space of all of above and more. Then you could start running algorithms for classification. You have exactly to know what you measuring. Otherwise call quality could mean close to nothing.

Phonon
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  • You are right, but what metrics that is possible to get on Android? – jlopes May 19 '11 at 15:25
  • Like I said, you have to come up with conceptual metrics first, and then see whether they're testable on Android. You need to know how to map the concept of *call quality* to a number, and that's only up to you to design. – Phonon May 19 '11 at 16:16