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# File 'lib/audio_stream/fx/comb_filter.rb', line 19
def process(input)
window_size = input.window_size
if @window_size!=window_size
raise "window size is not match: impulse.size=#{@window_size} input.size=#{window_size}"
end
streams = input.streams.map.with_index {|src, i|
buf = @delaybufs[i]
Vdsp::UnsafeDouble.copy(buf, window_size, 1, buf, 0, 1, @delaysample)
if @delaysample<window_size
Vdsp::UnsafeDouble.vclr(buf, window_size, 1, @delaysample)
end
Vdsp::UnsafeDouble.vsmsma(src, 0, 1, 1.0, buf, 0, 1, @q, buf, @delaysample, 1, window_size)
dst = buf[@delaysample, window_size]
dst
}
Buffer.new(*streams)
end
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