genish.js/js/dcblock.js

gen~ in js

'use strict'

let gen     = require( './gen.js' ),
    history = require( './history.js' ),
    sub     = require( './sub.js' ),
    add     = require( './add.js' ),
    mul     = require( './mul.js' ),
    memo    = require( './memo.js' )

module.exports = ( in1 ) => {
  let x1 = history(),
      y1 = history(),
      filter

  //History x1, y1; y = in1 - x1 + y1*0.9997; x1 = in1; y1 = y; out1 = y;
  filter = memo( add( sub( in1, x1.out ), mul( y1.out, .9997 ) ) )
  x1.in( in1 )
  y1.in( filter )

  return filter
}