Hi Eric:
I have already read that paper before. As that paper mentions, the USB delay
is according to the equation
f(512, fusb_block_size*fusb_nblock)
-------------------------------------
fs*sample_size , which
f(x,y) is at least x and at most y
So, does that mean if u have large product of fusb_block_size and
fusb_nblock, then the theometical maximum delay will be increased?
Therefore, I think that the range of USB latency is also increased. Please
correct me if I am wrong. Thanks!
KC
----- Original Message -----
From: "Eric Blossom" <[EMAIL PROTECTED]>
To: "KC Huang" <[EMAIL PROTECTED]>
Cc: <Discuss-gnuradio@gnu.org>
Sent: Friday, October 05, 2007 8:29 AM
Subject: Re: About Latency
On Thu, Oct 04, 2007 at 03:22:40PM -0400, KC Huang wrote:
Hi all:
I have two questions about Gnuradio latency:
1. In transmit path, the USB delay is constant due to the 32KB buffer
between "signal source output" and "USB".
You misunderstand how things work.
Please take a look at Thomas Schmid's paper
http://nesl.ee.ucla.edu/document/show/242
and then if you've still got questions, please post again.
Eric
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