apache-flex - 不支持的采样 flex/actionscript

Question

在我需要的 ActionScript 中

  Loading configuration file /opt/flex/frameworks/flex-config.xml
  t3.mxml(10): Error: unsupported sampling rate (24000Hz)

        [Embed(source="music.mp3")]

     t3.mxml(10): Error: Unable to transcode music.mp3.

        [Embed(source="music.mp3")]

代码是

         <?xml version="1.0"?>
   <!-- embed/EmbedSound.mxml -->
  <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">

  <mx:Script>
    <![CDATA[

        import flash.media.*; 

        [Embed(source="sample.mp3")]
        [Bindable]
        public var sndCls:Class;

        public var snd:Sound = new sndCls() as Sound; 
        public var sndChannel:SoundChannel;

        public function playSound():void {
            sndChannel=snd.play();
        }   

        public function stopSound():void {
            sndChannel.stop();
        }   
    ]]>
</mx:Script>

<mx:HBox>
    <mx:Button label="play" click="playSound();"/>
    <mx:Button label="stop" click="stopSound();"/>
</mx:HBox>
</mx:Application>

Answer 1

来自 livedocs :

"Flash can import either 8- or 16-bit sounds at sample rates of 11, 22, or 44 kHz. Sounds recorded in formats that are not multiples of 11 kHz (such as 8, 32, or 96 kHz) are resampled when imported into Flash. Flash can convert sounds to lower sample rates on export."

Flex Builder 不会为您执行此操作，因此您需要在使用前手动将“music.mp3”文件降采样到 22kHz。
编辑:
我找不到合适的文档，但 here它说:

"Sound Sample Rate - measured in Hz, this is fixed when the sound file is first recorded, and Flash .SWF files only allow four rates.

The Flash SWF format has sampling rates of:

5500 Hz

11025 Hz

22050 Hz

44100 Hz (preferred setting)"