An Opensource Spectrum Analyzer. Please use the Spectrum Analyzer1.
This is Fast Fourier Transformation based spectrum Analyzer for human voice. This project has been made open source and one can clone the source code from https://github.com/sommukhopadhyay/FFTBasedSpectrumAnalyzer. There is a new and improved version called Spectrum Analyzer1 at https://play.google.com/store/apps/details?id=com.somitsolutions.android.spectrumanalyzer1. This is because i lost the key for this app and hence had to upload a new version as a brand new app... From now onward please download this version.