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Diffstat (limited to 'examples/fft.lua')
| -rw-r--r-- | examples/fft.lua | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/examples/fft.lua b/examples/fft.lua index 417f3c6..5930f46 100644 --- a/examples/fft.lua +++ b/examples/fft.lua @@ -15,8 +15,8 @@ tostream(phase(FFT(Stream.SinOsc(samplerate*20/1024, 0.7):sub(1, 1024)))):gnuplo -- Naive pitch shifting -- This is not easy to get right. See https://www.reddit.com/r/DSP/comments/k6t24c/pitch_shifting_algorithm_in_frequency_domain/ -robin = SndfileStream("tracks/robin-mono.wav"):sub(sec(10.284), sec(17.466)):eval() -robin:FFT(1024):map(function(spectrum) +haiku = SndfileStream("examples/haiku.flac") +haiku:FFT(1024):map(function(spectrum) assert(#spectrum == 513) -- NOTE: We cannot use Stream:resample() as it won't work with complex samples. for i = 1, 512/2 do spectrum[i] = spectrum[i*2] end |