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emoticons OP wrote

Yes!! I am become same thinkings! before transform am ffmpeg to generated sine wave with sine filter that is gotten same frequency, Both the chart. in the divisions all the sound is low quality, Its no transformed -- all sine for ffmpeg is filter_complex concat Thats lost the quality. After transform i havent try it, i will need learn the phase shifted and amplitudinals for ffmpeg generate sine wave Also some the negate frequencies

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