Re: Intel 536ep based modem problem in Win2k/WinXP

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

Unfortunately in WinXP one driver can cause starvation of other
drivers. Try to avoid other activity while recording voice.
(exactly same advice as for burning a CD. Don't do anything else or you can get a coaster).
Maybe a muliprocessor or HT machine can help.

--PA


"Alex_" <alexshinkin@xxxxxxxxx> wrote in message news:1130210305.837881.289310@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Hi, All !
>
> My application records voice from telephone line using Intel 536ep
> based modem in voice mode. The modem is "controllerless", it has DSP
> and analog front end chip. OS - Win2k/WinXP.
> I've got a problem using 16bit PCM compression
> mode(AT+VSM=1,11025,0,0).
> When PC performing I/O-intensive operations,like copying a big file on
> USB flash, I've got lost bytes in recorded data flow. It's very easy to
> hear that one byte is lost when using 16 bit PCM ;) ... I got a piece
> of noice until another byte is lost ...
> I am playing with DCB settings and flow control but with no success for
> now .
> I havent noticed such effect using modem based on Conexant 11252 chip,
> but 16bit/11025Hz mode is essential for my task ,so I would like to use
> the Intel chip.
>
> Could anyone help to solve the problem?
>


.

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