Initial commit

bin/app.php

@@ -0,0 +1,35 @@
+<?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
+);