[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Discuss-gnuradio] Broadcast Receiver Audio Synchronization ( Delay

From: Marcus Müller
Subject: Re: [Discuss-gnuradio] Broadcast Receiver Audio Synchronization ( Delay locked loop for the two-clock problem)
Date: Sun, 6 Nov 2016 19:34:32 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.3.0

Exactly. This is where my tortoise-analogon kicks in: getting a
timestamp from some hardware clock simply takes an indeterminate amount
of time. You can only hope that time and its variance is small enough
for your estimator to work.

Best regards,

On 06.11.2016 18:35, Fons Adriaensen wrote:
> On Sun, Nov 06, 2016 at 05:08:37PM +0000, Benny Alexandar wrote:
>> Instead of relying the fourth clock on CPU,  we can use a counter
>> from audio hardware that will be more stable than CPU timer.
>> I would like to explore this option of using a TimeStampCounter
>> (TSC) from  audio hardware if it exists. If you know of any please
>> let me know.
> You won't find such a thing on most (99.9% of) audio hardware.
> Nor would it help. As explained before, the stability of the
> timer used to get timestamps on both the input and output
> streams of the resampler doesn't matter much, it basically
> almost disappears from the equations, and what remains is
> absolutely insignificant. None of the things I've written
> would work otherwise.  
> Ciao,

reply via email to

[Prev in Thread] Current Thread [Next in Thread]