added flipdot_display_row_single(). useful to set columns
added Flipdot Spectrum Analyzer. requires libasound and fftw3
use constant
Bug? freq_domain is of size fft_len, not 2*FFT_WIDTH
bar to rows_new: shift and invert faster?
added more comments
more verbose output
verbose output: mark column changes with "X"
divide integer samples by 32768, not 32767
bug in comment: freq_domain[fft_len-1], not [fft_len]
bug in comment fixed:
// real values in freq_domain[0] - freq_domain[(fft_len/2)-1]
// imaginary values in freq_domain[fft_len-1] - freq_domain[fft_len/2]
minor change in comments
minor comment added
comment bug
ignore freq_domain[0]/freq_domain[fft_len - 1] in average sum
minor changes to verbose output
removed flipspect.c - TODO: rename & extend flipspect_record
track number of flipdot changes in verbose output
added warning for debugging the fft scaling
removed flipspect
typo _1 vs 1