SilverlightShow: XNA for Silverlight developers: Part 8 - Music and sound effects Comments

Re: XNA for Silverlight developers: Part 8 - Music and sound effects

MisterGoodcat — Tue, 06 Dec 2011 09:20:16 GMT

@rajib, please take a look at part 1 of the series; it explains content projects in detail:

http://www.silverlightshow.net/items/XNA-for-Silverlight-developers-Part-1-Fundamentals.aspx

Re: XNA for Silverlight developers: Part 8 - Music and sound effects

rajib — Tue, 06 Dec 2011 06:18:49 GMT

"Sound effects, just like music, are imported into your game through the content project."

What is the content project and how do you import stuff through it?

Thanks,

Re: XNA for Silverlight developers: Part 8 - Music and sound effects

StevenHook — Sat, 11 Jun 2011 16:30:31 GMT

Nice work on the article. I am recording input from the microphone on a windows phone 7 project and I would like to show some indication of the playback of the clip as it is playing. Think of what you would see in windows when testing a microphone where you see the levels change as you yell into the microphone. I have not seen any examples showing how perhaps a game loop would be able to see into the sound instance and tell me the intensity. Do you know of a way to get that information? Thanks.

RE: XNA for Silverlight developers: Part 8 - Music and sound effects

Peter Kuhn — Sun, 27 Mar 2011 13:20:22 GMT

Ah, ok. I thought we were talking about XNA. For Silverlight, this is indeed different. When you import files through an XNA content project, the processing of the content pipeline ensures that the format is compatible to what the sound effect class expects. This stage of pre-processing obviously is missing when you use the XNA libraries from Silverlight, so you have to provide the input data in a supported format already. For the sound effect class, this is PCM wave. This restriction and more details about the supported parameters is listed here: http://msdn.microsoft.com/en-us/library/ff434104.aspx

So in your case, you indeed have to convert your sound files to wav format first.

RE: XNA for Silverlight developers: Part 8 - Music and sound effects

ppopadiyn — Sun, 27 Mar 2011 12:09:32 GMT

Hello Peter,

Thanks a lot for your response. Here is some additional info about. I have a wp7 application (it is a Silverlight project, not XNA). And I wanna play sounds from the code-behind. Obviously the MediaElement control won't work for me in this case. That's why I ended up using the SoundEffect and SoundEffectInstance classes. I added a reference to the Microsoft.Xna.Framework.dll assembly and I have the following code:

Stream stream = TitleContainer.OpenStream( "WindowsPhoneApplication1;component/Audio/MySound.wav" );

SoundEffect soundEffect = SoundEffect.FromStream( stream );

soundEffect.Name = "Test";

SoundEffectInstance effectInstance = soundEffect.CreateInstance();

effectInstance.Play();

Everything works perfect when I play ".wav" files, but for any other format it throws InvalidOperationException.

RE: XNA for Silverlight developers: Part 8 - Music and sound effects

Peter Kuhn — Sat, 26 Mar 2011 01:13:20 GMT

Hi. Although I'd say it's indeed rather uncommon, you should be able to also use WMA and MP3 files as sound effects. What you are probably seeing is that XNA Game Studio preselects the "Song" content processor by default when you import an MP3 or WMA into your content project (and "SoundEffect" as default for WAV files). You can simply change the content processor to "SoundEffect" though and it will work for those formats too (I had no problems using sample MP3 and WMA files as sound effects). If your files are also not working with these settings, there is a small chance their specs are not supported (bitrate, channels etc.). For a list of supported formats, see this link:

http://msdn.microsoft.com/en-us/library/ff462087(v=vs.92).aspx

RE: XNA for Silverlight developers: Part 8 - Music and sound effects

ppopadiyn — Fri, 25 Mar 2011 23:24:32 GMT

Well, nice article. You haven't mentioned something important. SoundEffect class works only with sounds in "wav" format. Or at least i am unable to make it working :(