How to display the highest value from a random created list of numbers in AS3 - actionscript-3

Question

I m building kind of a game in Flash (AS3) where sound input (microphone) trigger a equalizer (the micLevel.height controls the height of a mask (showing the equalizer). The activityLevel of the microphone gives me a number ( 0 - 100 ) wich is displayed in textfield prosent. The contestant shout in the microphone and try to reach 100 ( I use the mc.gain to make it hard to reach 100 ). So far so good! I m pretty new to AS3 so I feel kind of lost.
I need to display the highest number they manage to reach and I want to have a time limit on this. The highest sound level in lets say 5 seconds.
Here is the code so far:
var mic:Microphone = Microphone.getMicrophone();
Security.showSettings("privacy");
mic.setLoopBack(true);
if(mic != null)
{
mic.setUseEchoSuppression(true);
stage.addEventListener(Event.ENTER_FRAME, showLevel);
}
function showLevel(e:Event)
{
micLevel.height = mic.activityLevel * 6;
//mic.gain = 1;
//trace(mic.activityLevel);
prosent.text = "Activity: " + String(mic.activityLevel) + "%";
}
I just need some code that grab the highest number from the text field "prosent" (with a time limit) and display it in a new text field.
Im sorry if I m unclear, but if anyone could help me out I would be very happy!
Br Harald

Answer 1

Just create a variable that will be updated whenever the micLevel.height value is higher than it, e.g.
var highest:Number = 0;
function showLevel(e:Event):void
{
if(micLevel.height > highest)
{
// The mic level was higher than the previous highest level.
highest = micLevel.height;
// Change your other text field to show the value of 'highest'.
// ..
}
prosent.text = "Activity: " + String(mic.activityLevel) + "%";
}

Answer 2

Start a Timer to reset your highestLevel var. This will show you then the highest level every 5 seconds. You could add a timer start-stop button too if you wanted to keep one highest always showing.
Then in your showLevel function, use Math.max() to get the highest number (between current activity and recent highest)
var highestLevel:Number = 0;
var timer:Timer = new Timer(5000); // fires every 5 seconds
function initLevels(e:TimerEvent){
timer.stop(); // you could stop your timer here automatically and then use a button to start again
highestLevel = 0; // when timer fires restart your highestLevels var
}
function showLevel(e:Event) {
highestLevel = Math.max(mic.activityLevel * 6, highestLevel);
prosent.text = "Activity: " + String(highestLevel) + "%";
}
timer.start();
timer.addEventListener(TimerEvent.TIMER, initLevels);
addEventListener(Event.ENTER_FRAME, showLevel);