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We need 3 pieces of code written so we can compare battery consumption for an application that samples audio from the iphone at 8 khz 16 bit and process the audio. The comparisons will be:
1. Difference between 6 FIR filters with 150 taps versus doing an fft, retrieving the bands required and doing an ifft. (fft versus FIR)
2. Difference between doing the filtering (FIR and FFT) real time verus buffering the audio for 60 seconds then doing the filtering.
The main goal is to have as little impact on the iphone battery as possible.