Databases
StackOverflow2013
Postsdbo
POHow do you load a WAV file with Sound.loadPCMFromByteArray()?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow do you load a WAV file with Sound.loadPCMFromByteArray()?
    primarykey
    data
    text
    <p>Based on the resource <a href="https://ccrma.stanford.edu/courses/422/projects/WaveFormat/" rel="nofollow">here</a> (defining the <strong>structure of a WAV file</strong>), I was able to get the audio data between the 44th byte and near the end of the file (some extra meta-data exists at the end which is not necessary).</p> <p>But I'm having trouble loading it with the new <code>Sound.loadPCMFromByteArray()</code> method available in Flash Player 11.</p> <p>I get this error if I pass the number of samples:</p> <pre><code>_sound.loadPCMFromByteArray(pcm, pcm.length, "float", wav.isStereo, wav.sampleRate); </code></pre> <ul> <li><strong>[Fault] exception, information=ArgumentError: Error #2084: The AMF encoding of the arguments cannot exceed 40K</strong></li> </ul> <p>However, if I divide the <code>pcm.length</code> by four (4), it seems to play "something" but isn't at all the sample that I passed it originally. Plus, it sounds like it's <strong>looping</strong> forever, is this the intended behavior? (<em>I sure hope not!</em>)</p> <pre><code> //Dividing by 4 (# &gt;&gt; 2 is the same) is playable, but incorrect! _sound.loadPCMFromByteArray(pcm, pcm.length &gt;&gt; 2, "float", wav.isStereo, wav.sampleRate); </code></pre> <p>Does the ByteArray of WAV data need to be processed a certain way to conform to a readable PCM format? Do I need to insert an <strong>EOF</strong> character at the end so it knows when to stop the Sound file?</p> <p>Should I use another format than <em>"float"</em>? Which ones are supported?</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USbigp
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. POHow do you load a WAV file with Sound.loadPCMFromByteArray()?
      1. USNabuchodonozor
      1. VTFavorite
    2. VO
      singulars
      1. POHow do you load a WAV file with Sound.loadPCMFromByteArray()?
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POHow do you load a WAV file with Sound.loadPCMFromByteArray()?
      1. This table or related slice is empty.
      1. VTUpMod
    1. COif the playback is funny, then I suspect that the the format of data is not what FP is expecting it to be. This function assumes 32bits/sample. I guess if your original file is encoded in something different, then you'd need to pre-process the data before passing it on to loadPCMFromByteArray
      singulars
      1. POHow do you load a WAV file with Sound.loadPCMFromByteArray()?
      1. UScatholicon
    2. COit has something to do with "short" instead of "float". I will provide an elaborate answer later...
      singulars
      1. POHow do you load a WAV file with Sound.loadPCMFromByteArray()?
      1. USbigp
    3. CO@bigp - were you able to accomplish this? Also, there are classes out there to save and load WAV files in Flash. Have you tried these?
      singulars
      1. POHow do you load a WAV file with Sound.loadPCMFromByteArray()?
      1. US1.21 gigawatts
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload