Re: [LAU] Open Sound Interface project beginnings

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To: Christoph Kuhr <christoph.kuhr@...>, <linux-audio-user@...>
Date: Saturday, October 29, 2011 - 1:58 pm

On Sat, Oct 29, 2011 at 2:20 AM, Christoph Kuhr wrote:

I'm still not clear on it. I was having a little trouble following
the ideas from Dale and Fons, too. How would digital audio interfaces
be different from adc/dac?

The data transfer to/from the PC is packetized, no matter what kind of
interface you use to transfer data. It's an asyncrhonous process that
depends on when data is sent to or ready to be read from the device.

My idea is to control adc/dac directly from an FPGA (lots of them,
potentially). I'm familiar with I2C and SPI interfaces on adc/dac,
and there's a few differences between devices (order of bits from MSB
to LSB or LSB to MSB for instance). They are all basically the same,
but the handling of the same data is a bit different.

I have a few questions
Is digital audio syncronized or packetized? What's the clock rate?
What's the data transfer bandwidth? Is there an IC you can use just
like adc/dac?

Chuck
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Messages in current thread:
Re: [LAU] Open Sound Interface project beginnings, Christoph Kuhr, (Sat Oct 29, 7:43 am)
Re: [LAU] Open Sound Interface project beginnings, Charles Henry, (Sat Oct 29, 1:58 pm)
Re: [LAU] Open Sound Interface project beginnings, Fons Adriaensen, (Sat Oct 29, 8:50 pm)
Re: [LAU] Open Sound Interface project beginnings, Christoph Kuhr, (Sat Oct 29, 3:52 pm)