'Re: [xaudio-sdk] Error correction?'

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List:       xaudio-sdk
Subject:    Re: [xaudio-sdk] Error correction?
From:       "Peter Luijer" <pluijer () pop3 ! NL ! net>
Date:       2001-11-08 21:22:30
[Download RAW message or body]

Hi,

The MPEG algorithm supports error detection by means of a CRC, although this
feature is seldomly used (in the actual MP3) and I've never seen a decoder that uses
this check...

But if your program hangs or stops while playing a (supposedly corrupted) MP3
there's something wrong with your program.
If the XAudio decoder "detects" an invalid frame, it just resynchronizes itself and
carries on.
The only thing you'ld hear is a squeeky noise or a blip, depending on how many frames
are corrupted.

Greetz,

Peter.
  ----- Original Message ----- 
  From: Eduard 
  To: xaudio-sdk@mpegtv.com 
  Sent: Wednesday, November 07, 2001 2:01 PM
  Subject: [xaudio-sdk] Error correction?

  Is it possible to do an error correction on mp3 files. Sometimes my program is \
hanging, or stopped. Thanks in advanced,  Eduard.

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<DIV><FONT face=Arial size=2>Hi,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>The MPEG algorithm supports error detection by 
means of a CRC, although this</FONT></DIV>
<DIV><FONT face=Arial size=2>feature is seldomly used (in the actual MP3) and 
I've never seen a decoder that uses</FONT></DIV>
<DIV><FONT face=Arial size=2>this check...</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>But if your program hangs or stops while playing a 
(supposedly corrupted) MP3</FONT></DIV>
<DIV><FONT face=Arial size=2>there's something wrong with your 
program.</FONT></DIV>
<DIV><FONT face=Arial size=2>If the XAudio decoder "detects" an invalid frame, 
it just resynchronizes itself and</FONT></DIV>
<DIV><FONT face=Arial size=2>carries </FONT><FONT face=Arial 
size=2>on.</FONT></DIV>
<DIV><FONT face=Arial size=2>The only thing you'ld hear is a squeeky noise or a 
blip, depending on how many frames</FONT></DIV>
<DIV><FONT face=Arial size=2>are corrupted.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>Greetz,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=Arial size=2>Peter.</FONT></DIV>
<BLOCKQUOTE dir=ltr 
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 \
2px solid; MARGIN-RIGHT: 0px">  <DIV style="FONT: 10pt arial">----- Original Message \
----- </DIV>  <DIV 
  style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> 
  <A title=mattsoft@zeelandnet.nl 
  href="mailto:mattsoft@zeelandnet.nl">Eduard</A> </DIV>
  <DIV style="FONT: 10pt arial"><B>To:</B> <A title=xaudio-sdk@mpegtv.com 
  href="mailto:xaudio-sdk@mpegtv.com">xaudio-sdk@mpegtv.com</A> </DIV>
  <DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, November 07, 2001 2:01 
  PM</DIV>
  <DIV style="FONT: 10pt arial"><B>Subject:</B> [xaudio-sdk] Error 
  correction?</DIV>
  <DIV><BR></DIV>
  <DIV><FONT face=Arial size=2>Is it possible to do an error correction on mp3 
  files. Sometimes my program is hanging, or stopped. Thanks in 
  advanced,</FONT></DIV>
  <DIV><FONT face=Arial size=2>Eduard.</FONT></DIV></BLOCKQUOTE></BODY></HTML>

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