I want to monitor the microphone audio input with flash ( as3 ).
This is just a tiny part of my code, but actually the problem is in there.
var mic:Microphone = Microphone.getMicrophone();
mic.setLoopBack(true);
addEventListener( Event.ENTER_FRAME, loop );
function loop( event:Event ):void {
trace( mic.activityLevel );
}
If i use the code like it is, i can trace the activityLevel and actually can see some values.. ( i think it is the volume ? )
Well, the only problem is, that the audio is also outputed to the speakers, what i DON'T want... ( mic.setLoopBack(true); )
But when i try mic.setLoopBack(false);, flash doesn't ask for microphone premissions anymore and the traced activityLevel stays "-1".....
So what can i do to disable the audio loopback OR to just monitor the audio data from the mic. ?
( when i say "audio data", i mean all the data that is necessary for later BPM detection... i think it's an byte array of the audio, isn't it ? )
As a temp solution to mute the mic you can try :
var st:SoundTransform = new SoundTransform(0);
mic.soundTransform = st;
You should still see the activity level.
Instead of using setLoopBack(), you just need to listen for SampleDataEvent's from the Microphone. Note the section titled "Detecting Microphone Activity" in this Adobe article, and in particular this note that talks about ways you can listen for microphone activity:
Note: A Microphone object only dispatches Activity events when your application is monitoring the microphone. Thus, if you do not call setLoopBack( true ), add a listener for sample data events, or attach the microphone to a NetStream object, then no activity events are dispatched.
var mic:Microhpone = Microphone.getMicrophone;
mic.addEventListener(SampleDataEvent.SAMPLE_DATA, onSampleData);
function onSampleData(event:SampleDataEvent):void
{
trace("activity from: " + mic.name + " level: " + mic.activityLevel);
}
This should be a more optimal solution, as the SampleDataEvent's are only dispatched when the microphone detects sound, as opposed to your current approach that works on every frame.
I am playing a small audio clip on click of each link in my navigation
HTML Code:
<audio tabindex="0" id="beep-one" controls preload="auto" >
<source src="audio/Output 1-2.mp3">
<source src="audio/Output 1-2.ogg">
</audio>
JS code:
$('#links a').click(function(e) {
e.preventDefault();
var beepOne = $("#beep-one")[0];
beepOne.play();
});
It's working fine so far.
Issue is when a sound clip is already running and i click on any link nothing happens.
I tried to stop the already playing sound on click of link, but there is no direct event for that in HTML5's Audio API
I tried following code but it's not working
$.each($('audio'), function () {
$(this).stop();
});
Any suggestions please?
Instead of stop() you could try with:
sound.pause();
sound.currentTime = 0;
This should have the desired effect.
first you have to set an id for your audio element
in your js :
var ply = document.getElementById('player');
var oldSrc = ply.src;// just to remember the old source
ply.src = "";// to stop the player you have to replace the source with nothing
I was having same issue. A stop should stop the stream and onplay go to live if it is a radio. All solutions I saw had a disadvantage:
player.currentTime = 0 keeps downloading the stream.
player.src = '' raise error event
My solution:
var player = document.getElementById('radio');
player.pause();
player.src = player.src;
And the HTML
<audio src="http://radio-stream" id="radio" class="hidden" preload="none"></audio>
Here is my way of doing stop() method:
Somewhere in code:
audioCh1: document.createElement("audio");
and then in stop():
this.audioCh1.pause()
this.audioCh1.src = 'data:audio/wav;base64,UklGRiQAAABXQVZFZm10IBAAAAABAAEAVFYAAFRWAAABAAgAZGF0YQAAAAA=';
In this way we don`t produce additional request, the old one is cancelled and our audio element is in clean state (tested in Chrome and FF) :>
This method works:
audio.pause();
audio.currentTime = 0;
But if you don't want to have to write these two lines of code every time you stop an audio you could do one of two things. The second I think is the more appropriate one and I'm not sure why the "gods of javascript standards" have not made this standard.
First method: create a function and pass the audio
function stopAudio(audio) {
audio.pause();
audio.currentTime = 0;
}
//then using it:
stopAudio(audio);
Second method (favoured): extend the Audio class:
Audio.prototype.stop = function() {
this.pause();
this.currentTime = 0;
};
I have this in a javascript file I called "AudioPlus.js" which I include in my html before any script that will be dealing with audio.
Then you can call the stop function on audio objects:
audio.stop();
FINALLY CHROME ISSUE WITH "canplaythrough":
I have not tested this in all browsers but this is a problem I came across in Chrome. If you try to set currentTime on an audio that has a "canplaythrough" event listener attached to it then you will trigger that event again which can lead to undesirable results.
So the solution, similar to all cases when you have attached an event listener that you really want to make sure it is not triggered again, is to remove the event listener after the first call. Something like this:
//note using jquery to attach the event. You can use plain javascript as well of course.
$(audio).on("canplaythrough", function() {
$(this).off("canplaythrough");
// rest of the code ...
});
BONUS:
Note that you can add even more custom methods to the Audio class (or any native javascript class for that matter).
For example if you wanted a "restart" method that restarted the audio it could look something like:
Audio.prototype.restart= function() {
this.pause();
this.currentTime = 0;
this.play();
};
It doesn't work sometimes in chrome,
sound.pause();
sound.currentTime = 0;
just change like that,
sound.currentTime = 0;
sound.pause();
From my own javascript function to toggle Play/Pause - since I'm handling a radio stream, I wanted it to clear the buffer so that the listener does not end up coming out of sync with the radio station.
function playStream() {
var player = document.getElementById('player');
(player.paused == true) ? toggle(0) : toggle(1);
}
function toggle(state) {
var player = document.getElementById('player');
var link = document.getElementById('radio-link');
var src = "http://192.81.248.91:8159/;";
switch(state) {
case 0:
player.src = src;
player.load();
player.play();
link.innerHTML = 'Pause';
player_state = 1;
break;
case 1:
player.pause();
player.currentTime = 0;
player.src = '';
link.innerHTML = 'Play';
player_state = 0;
break;
}
}
Turns out, just clearing the currentTime doesn't cut it under Chrome, needed to clear the source too and load it back in. Hope this helps.
As a side note and because I was recently using the stop method provided in the accepted answer, according to this link:
https://developer.mozilla.org/en-US/docs/Web/Guide/Events/Media_events
by setting currentTime manually one may fire the 'canplaythrough' event on the audio element. In the link it mentions Firefox, but I encountered this event firing after setting currentTime manually on Chrome. So if you have behavior attached to this event you might end up in an audio loop.
shamangeorge wrote:
by setting currentTime manually one may fire the 'canplaythrough' event on the audio element.
This is indeed what will happen, and pausing will also trigger the pause event, both of which make this technique unsuitable for use as a "stop" method. Moreover, setting the src as suggested by zaki will make the player try to load the current page's URL as a media file (and fail) if autoplay is enabled - setting src to null is not allowed; it will always be treated as a URL. Short of destroying the player object there seems to be no good way of providing a "stop" method, so I would suggest just dropping the dedicated stop button and providing pause and skip back buttons instead - a stop button wouldn't really add any functionality.
This approach is "brute force", but it works assuming using jQuery is "allowed". Surround your "player" <audio></audio> tags with a div (here with an id of "plHolder").
<div id="plHolder">
<audio controls id="player">
...
</audio>
<div>
Then this javascript should work:
function stopAudio() {
var savePlayer = $('#plHolder').html(); // Save player code
$('#player').remove(); // Remove player from DOM
$('#FlHolder').html(savePlayer); // Restore it
}
I was looking for something similar due to making an application that could be used to layer sounds with each other for focus. What I ended up doing was - when selecting a sound, create the audio element with Javascript:
const audio = document.createElement('audio') as HTMLAudioElement;
audio.src = getSoundURL(clickedTrackId);
audio.id = `${clickedTrackId}-audio`;
console.log(audio.id);
audio.volume = 20/100;
audio.load();
audio.play();
Then, append child to document to actually surface the audio element
document.body.appendChild(audio);
Finally, when unselecting audio, you can stop and remove the audio element altogether - this will also stop streaming.
const audio = document.getElementById(`${clickedTrackId}-audio`) as HTMLAudioElement;
audio.pause();
audio.remove();
If you have several audio players on your site and you like to pause all of them:
$('audio').each( function() {
$(this)[0].pause();
});
I believe it would be good to check if the audio is playing state and reset the currentTime property.
if (sound.currentTime !== 0 && (sound.currentTime > 0 && sound.currentTime < sound.duration) {
sound.currentTime = 0;
}
sound.play();
for me that code working fine. (IE10+)
var Wmp = document.getElementById("MediaPlayer");
Wmp.controls.stop();
<object classid="clsid:6BF52A52-394A-11D3-B153-00C04F79FAA6"
standby="Loading áudio..." style="width: 100%; height: 170px" id="MediaPlayer">...
Hope this help.
What I like to do is completely remove the control using Angular2 then it's reloaded when the next song has an audio path:
<audio id="audioplayer" *ngIf="song?.audio_path">
Then when I want to unload it in code I do this:
this.song = Object.assign({},this.song,{audio_path: null});
When the next song is assigned, the control gets completely recreated from scratch:
this.song = this.songOnDeck;
The simple way to get around this error is to catch the error.
audioElement.play() returns a promise, so the following code with a .catch() should suffice manage this issue:
function playSound(sound) {
sfx.pause();
sfx.currentTime = 0;
sfx.src = sound;
sfx.play().catch(e => e);
}
Note: You may want to replace the arrow function with an anonymous function for backward compatibility.
In IE 11 I used combined variant:
player.currentTime = 0;
player.pause();
player.currentTime = 0;
Only 2 times repeat prevents IE from continuing loading media stream after pause() and flooding a disk by that.
What's wrong with simply this?
audio.load()
As stated by the spec and on MDN, respectively:
Playback of any previously playing media resource for this element stops.
Calling load() aborts all ongoing operations involving this media element
Im experimenting with flashbuilder 4.6 and am using this simple / bare-bones geolocation code I found online to do some testing as I try to learn more about it and how it might be used...
one thing I am curious to know is how to stop / interrupt the geolocation routine so that it STOPS polling for the location and waits for the user to 'start' the geolocation.
if I use clearInterval(interval); that can stop the loop I guess -- but geo2 continues to exist and use device resources, correct? what would the code look like to use a slideToggle to control it for example?
The geolocation code snippet Im experimenting with...
private function onMapReady(e:Event):void
{
if (Geolocation.isSupported)
{
var geo = new Geolocation();
geo.setRequestedUpdateInterval(100);
geo.addEventListener(GeolocationEvent.UPDATE, geolocationUpdateHandler);
}
else
{
trace("No geolocation support.");
}
}
private function geolocationUpdateHandler(event:GeolocationEvent):void
{
trace("lat:" + event.latitude.toString() + " - ");
trace("long:" + event.longitude.toString() + "° - ");
trace("Accuracy:" + event.horizontalAccuracy.toString() + " m");
}
If you want to stop reacting to polling updates, just remove the listener:
geo.removeEventListener(GeolocationEvent.UPDATE, geolocationUpdateHandler);
If you want to switch off polling completely, just nullify it:
geo = null;
(and make sure you also remove any listeners first)
Hello everybody I am developing a game with starling and i want to set a timer for example every 2 sec i want something to happen.
I used the juggler elapsed prop but i wonder is there a more effecient way to do that
thank you,
Khaled
Alternatively, you can use the "DelayedCall" class. It's easy to miss! ;-)
var delayedCall:DelayedCall = new DelayedCall(method, 2.0);
delayedCall.repeatCount = int.MAX_VALUE;
Starling.juggler.add(delayedCall);
function method():void
{
trace("ping");
}
If this does not relate to animation, it is recommended to use a Timer for non-animated content.
Timer implementation would be higher performance than additional time calculations on enter frame handler.
If you are advancing Starling Jugglers, you can set the frame rate of the Juggler to every 2-seconds.
Jugglers also have delayCall in which you could infinitely loop every 2-seconds if your functor redundantly called delayCall:
juggler.delayCall(functor, 2.0);
To tie in to Starlings frame / render lifecycle, you can test time since your last call.
private var lastCallTime:int
protected function frameHandler():void
{
var now:int = getTimer();
var ellapsed:int = now - lastCallTime;
if(ellapsed >= 2000)
{
/* execute implementation */
lastCallTime = now;
}
}
I'm using greensock LoaderMax to load video files and sound files. I've copied as much code as is available to me. A video (s9) is playing and at a certain percentage through the video, I need to play another sound.
if(s9.playProgress > .1) // This is what I can't get to work
{
s12_sound.playSound(); //This sound won't play at .1 playProgress
}
s9.content.visible = true;
s9.playVideo();
stop();
s9.addEventListener(VideoLoader.VIDEO_COMPLETE, play_s9_loop); //This plays a video once s9 is done.
function play_s9_loop(event:Event):void
{
s9.content.visible = false;
s9_loop.content.visible = true;
s9_loop.playVideo();
}
I'm guessing you just can't do an if() on playProgress? Furthermore, I suck at AS3.
You should be able to just listen for the INIT event on the video (which typically means it has loaded enough to determine the duration of the video) and then add an AS cue point.
//...after you create your VideoLoader...
myVideoLoader.addEventListener(LoaderEvent.INIT, initHandler);
myVideoLoader.load();
function initHandler(event:LoaderEvent):void {
myVideoLoader.addASCuePoint( myVideoLoader.duration * 0.1, "myLabel" );
myVideoLoader.addEventListener(VideoLoader.VIDEO_CUE_POINT, cuePointHandler);
}
function cuePointHandler(event:LoaderEvent):void {
trace("Hit the cue point " + event.data.name);
s12_sound.playSound();
}
Also make sure that you preload that s12_sound so that it's ready to play when you need it. Otherwise, you can call playSound() all you want and it ain't gonna happen :)
I haven't used this class before but after reading the docs it looks like you can do something like this:
http://www.greensock.com/as/docs/tween/com/greensock/loading/VideoLoader.html
var mid:Number = s9_loop.duration/2; //get the midpoint using the duration property
s9_loop.addASCuePoint(mid, "middle") //using addASCubePoint to add a cuepoint to the midpoint of the video
s9_loop.addEventListener(VideoLoader.VIDEO_CUE_POINT, handleMidpoint); //listen for the cuepoint
Inside the handler function
protected function handleMidpoint(e:Event):void{
//play your sound
}