Re: [Discuss-gnuradio] how to manage time!

[Marcus Müller]

Hi Mostafa,

again: Start trying things out!

The Audio source is a hardware bound source, where theoretically
sampling rate and sample production rate match.
That's only the case for hardware sources/sinks, and GNU Radio has no
chance nor will to enforce that, because it is software running on a
general purpose computer. Your sample stream is totally agnostic of
time. And there's absolutely no way to change that in a properly
controlled manner.

So stop worrying, start trying, and let's move away from this strange
thread :)

Greetings,
Marcus

On 10.05.2014 09:38, Mostafa Alizadeh wrote:
> Dear Activecat,
> 
> To be honest, I'm still confused!! :)
> I want to have a source which generates a stream in a specific sample rate
> (or approximately, in average). Take a look at Audio source block, or some
> other source blocks, if there any, which takes sample rate as an input.
> (for instance USRP source also has this kind of input)
> You will see options for sampling frequency in *audio source block *by that
> rate outputs samples of type float. This block that I don't know how works,
> it's somehow what I want as a source to run my signal processing chain.
> 
> If I could be enable to have such source block, I have nothing else to be
> worry!
> 
> Thanks,
> 
> 
> 
> On Sat, May 10, 2014 at 10:59 AM, Activecat <address@hidden> wrote:
> 
>>
>> On Sat, May 10, 2014 at 1:28 PM, m-alizadeh [via GnuRadio] <
>> address@hidden> wrote:
>>
>>> Marcus I know what you said about sampling theory. But you must notice
>>> that the higher the sampling rate, the greater the number of samples you
>>> get in a particular period of time (real world time). In your example the
>>> sine has a frequency of 1000 ( in real time) but the number of samples of
>>> that sine function, could be determined with your sampling rate.
>>>
>>
>> That means you already understand how to solve the problem, or still
>> confused ..?
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
> 
> 
> 
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