class AudioStream::Fx::Equalizer3band
Public Class Methods
new(soundinfo, lowfreq: 400.0, lowgain:, midfreq: 1000.0, midgain:, highfreq: 4000.0, highgain:)
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# File lib/audio_stream/fx/equalizer_3band.rb, line 4 def initialize(soundinfo, lowfreq: 400.0, lowgain:, midfreq: 1000.0, midgain:, highfreq: 4000.0, highgain:) @low_filter = LowShelfFilter.create(soundinfo, freq: lowfreq, q: BiquadFilter::DEFAULT_Q, gain: lowgain) @mid_filter = PeakingFilter.create(soundinfo, freq: midfreq, bandwidth: 1.0, gain: midgain) @high_filter = HighShelfFilter.create(soundinfo, freq: highfreq, q: BiquadFilter::DEFAULT_Q, gain: highgain) end
Public Instance Methods
plot(width=500)
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# File lib/audio_stream/fx/equalizer_3band.rb, line 16 def plot(width=500) data1 = @low_filter.plot_data(width) data2 = @mid_filter.plot_data(width) data3 = @high_filter.plot_data(width) data = { x: data1[:x], magnitude: [data1[:magnitude], data2[:magnitude], data3[:magnitude]].transpose.map {|a| a[0] + a[1] + a[2]}, phase: [data1[:phase], data2[:phase], data3[:phase]].transpose.map {|a| a[0] + a[1] + a[2]}, } 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/equalizer_3band.rb, line 10 def process(input) input = @low_filter.process(input) input = @mid_filter.process(input) input = @high_filter.process(input) end