HI, yes

A little more background ... we are implementing research algorithms for hearing aids ... so ... we have many mic inputs and stereo output ...

we want a digital interface to the laptop.

Need 6 analog inputs Need 2 analog outputs

Need minimal latency both in and out as it is a collect/process/output system.

Sample rates anything between 22050 Hz and 48 kHz is good at this point.

At the moment we can get about 3 ms with an off the shelf firewire/usb card @ 48 kHz, however when we load the CPU with DSP algorithms, we sometimes need to bump up the frame size and thus the latency goes up ... We are running a realtime patched kernel.

I have found that there is about 2/3 of the latency in hardware buffers.

So we are still open to better USB/Firewire hardware, however would prefer more bandwidth and hopefully less latency to the device. This is why I asked about ethernet and possible PCMCIA.

Matt

Matt Flax wrote:

...

We are after an ultra low latency connection to a multichannel in/out sound card for a laptop. We want a portable system and don't want to network to a different computer to achieve this goal.

As we are after ultra low latency, we are interested in both PCMCIA and ethernet (gigabit) solutions.

Is anyone aware of any such ultra low latency hardware ?

Can you define what you require.

Do you want analog or digital audio I/O?

Do you need low latency in, out or both?

What samplerates do you need?

What latency would be acceptable (say how many milliseconds or microseconds).

regards

Eliot