Class: FFTStream
- Inherits:
-
FFI::PortAudio::Stream
- Object
- FFI::PortAudio::Stream
- FFTStream
- Defined in:
- lib/libui_paradise/examples/simple/009_spectrum.rb
Overview
#
FFTStream
#
Instance Method Summary collapse
- #process(input, _output, frame_count, _time_info, _status_flags, _user_data) ⇒ Object
- #spec ⇒ Object
Instance Method Details
#process(input, _output, frame_count, _time_info, _status_flags, _user_data) ⇒ Object
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# File 'lib/libui_paradise/examples/simple/009_spectrum.rb', line 17 def process(input, _output, frame_count, _time_info, _status_flags, _user_data) i = Numo::Int16.cast(input.read_array_of_int16(frame_count)) @spec = (Numo::Pocketfft.rfft(i)[0..511].abs / 1000.0).to_a :paContinue end |
#spec ⇒ Object
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# File 'lib/libui_paradise/examples/simple/009_spectrum.rb', line 23 def spec @spec || [0] * 512 end |