Class: StepSequencer::SoundBuilder::DefaultEffects::Pitch

Inherits:
Object
  • Object
show all
Defined in:
lib/step_sequencer/sound_builder/default_effects/pitch.rb

Class Method Summary collapse

Class Method Details

.build(sources:, value:, speed_correction: true) ⇒ Object 



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# File 'lib/step_sequencer/sound_builder/default_effects/pitch.rb', line 5

def self.build(sources:, value:, speed_correction: true)
  sources.map &change_pitch(value, speed_correction)
end

.change_pitch(value, speed_correction) ⇒ Object 



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# File 'lib/step_sequencer/sound_builder/default_effects/pitch.rb', line 9

def self.change_pitch(value, speed_correction)
  ->(source){
    outfile = build_outfile_name(source, value)
    cmd = "      ffmpeg -y -i \#{source} -af   \\\n        asetrate=44100*\#{value} \\\n        \#{outfile}              \\\n        2> /dev/null\n    SH\n    system cmd\n    return outfile unless speed_correction\n    outfile_with_correct_speed = correct_speed(outfile, value)\n    outfile_with_correct_speed\n  }\nend\n"