Input MicroPhone in CubieBoard

In Past days we  should start recording   voice with a microphone with connected to socket line in cubieboard.When i used arecord command in linux with microphone that is connected to it, it returns "???????????????" in terminal in Fedora linux.

Continue reading Input MicroPhone in CubieBoard

FM Receiver in Matlab with RTL-SDR

In telecommunications and signal processing,frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave. This contrasts with amplitude modulation, in which the amplitude of the carrier wave varies, while the frequency remains constant.

Continue reading FM Receiver in Matlab with RTL-SDR

How we can install HackRFOne On Matlab in Win8

In this blog post we will show installing library simulink-hackrf in MatlabRS2016a. With this library you can using HackRFOne in matlab HackRFOne is a opensource SDR hardware This library is Great it is brought for you using  HackRFone in matlab for enthusiasts of SDR. In this video you can see installing this library.

Continue reading How we can install HackRFOne On Matlab in Win8

I/Q format in Software Defined Radio

What's I/Q format? Why I/Q is important in SDR.

I/Q data shows the changes in magnitude (or amplitude) and phase of a sine wave. If amplitude and phase changes occur in an orderly, predetermined fashion, you can use these amplitude and phase changes to encode information upon a sine wave, a process known as modulation. 

Continue reading I/Q format in Software Defined Radio

RTL-SDR dongle Shows DVB-T signal SDR based?

One of most popular and cheap hadrware in SDR is RTL-SDR, this dongle can I/Q sample with resoulotion 8bit ADC, it can too used DVB-T dongle, in this blog post we describe how RTL-SDR can received DVB-T signal and show in VLC media player?

 

Continue reading RTL-SDR dongle Shows DVB-T signal SDR based?