Hi,
We are working on
Linux platform with kernel-2.6.16.13
The system has Intel
82801DB-ICH4 sound card.
The maximum sampling
rate of this sound card, according to specifications is
48000.
In our application,
audio lines from mobile phones will be connected to the sound card of the
PC.
Each phone has to
pins: AFMS(Analog From Mobile Station) and ATMS(Analog To Mobile
Station)
We receive analog
data from the AFMS port of mobile and digitize using ADC of sound card and
analyze the receive data.
On the other hand we
generate samples and pass them to DAC of sound card to generate the analog
output which in turn is fed to the ATMS port of the mobile.
Our requirement is
to support as many as 32 such devices using a single sound
card.
But a ADC-DAC pair
of Intel 82801DB-ICH4 can support 6 (8000samples/sec X 6devices =
48000samples/sec) devices(by using
multiplexers/demultiplexers)
Since it has two
ADC-DAC pairs, it can support a total of 12 devices. Please correct if the
understanding is wrong.
Can someone suggest
a sound card(with ALSA support) with higher sampling rate or more number of
channels, to support 32 mobile phones.
Any help in this
regard will be highly appreciated.
Thanks and
Regards,
Sreevidya
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