class AudioStream::Fx::GraphicEqualizer
Public Class Methods
new(soundinfo)
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# File lib/audio_stream/fx/graphic_equalizer.rb, line 4 def initialize(soundinfo) @soundinfo = soundinfo @filters = [] end
Public Instance Methods
add(freq:, bandwidth: 1.0, gain:)
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# File lib/audio_stream/fx/graphic_equalizer.rb, line 9 def add(freq:, bandwidth: 1.0, gain:) @filters << PeakingFilter.create(@soundinfo, freq: freq, bandwidth: bandwidth, gain: gain) self end
plot(width=500)
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# File lib/audio_stream/fx/graphic_equalizer.rb, line 21 def plot(width=500) data_arr = @filters.map{|filter| filter.plot_data(width)} data = { x: data_arr[0][:x], magnitude: data_arr.map{|d| d[:magnitude]}.transpose.map {|a| a.sum}, phase: data_arr.map{|d| d[:phase]}.transpose.map {|a| a.sum}, } Plotly::Plot.new( data: [{x: data[:x], y: data[:magnitude], name: 'Magnitude', yaxis: 'y1'}, {x: data[:x], y: data[:phase], name: 'Phase', yaxis: 'y2'}], layout: { xaxis: {title: 'Frequency (Hz)', type: 'log'}, yaxis: {side: 'left', title: 'Magnitude (dB)', showgrid: false}, yaxis2: {side: 'right', title: 'Phase (deg)', showgrid: false, overlaying: 'y'} } ) end
process(input)
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# File lib/audio_stream/fx/graphic_equalizer.rb, line 14 def process(input) @filters.each {|filter| input = filter.process(input) } input end