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Well, I want to build an android app that when I playing a song with a music player. listen to the volume of the current song continuously, and show it on the screen .

I have read the manuals of MediaPlayer, MediaRecorder, AudioTrack, AudioRecorder from sdk. But it seems none of them meets my need.

Could any one give me a hint?

Edit:

I want to analyze the song to know the saturation level, not the system volume.

Alex Chan
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    Do you want to know the system volume level or analyze the song to know the saturation level? – Seraphim's Jun 28 '13 at 08:24
  • Sounds like something you could do with [the Visualizer API](http://developer.android.com/reference/android/media/audiofx/Visualizer.html). – Michael Jun 28 '13 at 08:34

2 Answers2

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have you try this : 

value = audioManager.getStreamVolume(audioManager.STREAM_MUSIC);

and this is the info link
http://developer.android.com/reference/android/media/AudioManager.html

Saeed-rz
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Found this (interesting!):

http://netscale.cse.nd.edu/twiki/pub/Main/Projects/Analyze_the_frequency_and_strength_of_sound_in_Android.pdf

and look at:

http://code.compartmental.net/tools/minim/manual-minim/

There are a lot answers can help you with your idea:

Android audio FFT to retrieve specific frequency magnitude using audiorecord

Get sound frequency with Android FFT

Community
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Seraphim's
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