When using Virtualbox, generally we have usb problem. It doesn't work at the begining. The reason of that situation is the users of virtualbox operating systems doesn't know the host user. (in this case host is any Linux distribution)
To deal with this problem we need to add host user to the 'vboxusers'(virtualbox users g.) group. Proceed the following steps:
1. Open a terminal
2. Enter the following code.
sudo usermod...
Thursday, November 7, 2013
Delta Modulation Encoder and Decoder
In Delta Modulation, the quantizer is a
1-bit (two level) quantizer with magnitudes +δ and -δ . A block
diagram of a delta modulation system is shown in following figure.
Delta modulation transmits only one bit per sample. As seen from
block diagram, the present value is compared with the previous value
and according to sign of this difference...
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