<?php

// http://enjoythemusic.com/diy/0311/crossover.htm

use Scientific\Frequency;
use Scientific\Impedance;

require_once __DIR__ . '/../vendor/autoload.php';

$frequency = new Frequency(unit(9000));
$tweeter = new Driver(new Impedance(unit(8)));
$woofer = new Driver(new Impedance(unit(4)));

$crossover = new FirstOrderTwoWayCrossover($frequency);
$capacitor = $crossover->getTweeterCapacitor($tweeter);
$inductor = $crossover->getWooferInductor($woofer);

printf(
    'First order 2-way crossover @ %s (slope = %s):%s',
    $crossover->getFrequency(),
    $crossover->getSlope(),
    PHP_EOL
);
printf(
    ' - %s capacitor in series with %s tweeter%s',
    $capacitor->getCapacitance(),
    $tweeter->getImpedance(),
    PHP_EOL
);
printf(
    ' - %s inductor in series with %s woofer%s',
    $inductor->getInductance()->format('milli'),
    $woofer->getImpedance(),
    PHP_EOL
);