# Converting analog signal to digital

**URL:** <https://www.ruby-forum.com/t/converting-analog-signal-to-digital/225583>\
**Category:** GNU Radio\
**Created:** [January 16, 2013, 3:11pm UTC](https://www.ruby-forum.com/t/converting-analog-signal-to-digital/225583 "2013-01-16T15:11:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![aris](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/258eb7/32.png) [@aris](https://www.ruby-forum.com/u/aris)\
**Post date:** [January 16, 2013, 3:11pm UTC](https://www.ruby-forum.com/t/converting-analog-signal-to-digital/225583/1 "2013-01-16T15:11:37Z")

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Hi,I am a beginner in GRC. How can I convert a signal source(Continuous)  
to digital format.  
RegardsGRB

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**Author:** ![Ghulam\_Rasool\_B](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/bc8723/32.png) [@Ghulam\_Rasool\_B](https://www.ruby-forum.com/u/Ghulam_Rasool_B)\
**Post date:** [January 17, 2013, 9:13am UTC](https://www.ruby-forum.com/t/converting-analog-signal-to-digital/225583/2 "2013-01-17T09:13:45Z")

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Hello Ghulam,

GRC generates discrete complex samples. The concept of “ideal continuous  
source” does not exist. Let’s assume you generate a sinusoid with 10 kHz  
tone frequency and 1 MHz sampling rate. If you connect this source block  
to  
UHD:USRP\_Sink block, the USRP will transmit a 1 MHz sinusoid with a  
period  
of 100 discrete samples (1 MHz/10 kHz = 100).

Thanks,

Nazmul

On Wed, Jan 16, 2013 at 9:10 AM, Ghulam Rasool B.  
[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)wrote:

> [Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio)

–  
Muhammad Nazmul I.

Graduate Student  
Electrical & Computer Engineering  
Wireless Information & Networking Laboratory  
Rutgers, USA.