asterisk users - May 2006 - playback windows recorded sound

I downloaded recordPad and recorded a wav file and tried playback on 
asterisk got the same error as before -- WARNING [1225991360] 
Format.wav.c:132 check_header:unexpected header size 18--

when I recorded in gsm format on my laptop asterisk did playback well

I used sox to resample the recorded wav file on the asterisk machine into 
wav again and asterisk playback worked well.

The sound property of the recorded wav file is as follows

Bit Rate                128kbps
Audio sample size   16 bit
Channels               1(mono)
Audio sample rate   8 kHz
Audio Format         PCM

Is there any reason for this behaviour?

>From: Doug Lytle <Support@drdos.info>
>Reply-To: Asterisk Users Mailing List - Non-Commercial 
>Discussion<asterisk-users@lists.digium.com>
>To: Asterisk Users Mailing List - Non-Commercial 
>Discussion<asterisk-users@lists.digium.com>
>Subject: Re: [Asterisk-Users] playback windows recorded sound
>Date: Mon, 22 May 2006 14:12:25 -0400
>
>Akpome Akpoguma wrote:
>>Hi guys,
>>
>>I recorded a wav file on my windows xp laptop and tried to playback on 
>>asterisk but got the following error......unexpected header error 
>>18.....when  I recorded sound using a sip phone on asterisk and compared
>>with what I recorded on windows the sound property looked the 
>>same.....does anyone have an idea how I can resolve this?
>
>
>This should help:
>
>http://www.voip-info.org/wiki/view/Asterisk+sound+files
>
>Doug
>
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> I downloaded recordPad and recorded a wav file and tried playback on
> asterisk got the same error as before -- WARNING [1225991360]
> Format.wav.c:132 check_header:unexpected header size 18--
>
> when I recorded in gsm format on my laptop asterisk did playback well
>
> I used sox to resample the recorded wav file on the asterisk machine into
> wav again and asterisk playback worked well.
>
> The sound property of the recorded wav file is as follows
>
> Bit Rate                128kbps
> Audio sample size   16 bit
> Channels               1(mono)
> Audio sample rate   8 kHz
> Audio Format         PCM
>
> Is there any reason for this behaviour?
See this page :
http://www.voip-info.org/tiki-index.php?page=Convert+WAV+audio+files+for+use+in+Asterisk

hth