:) :) :) You're welcome! :) :) :)
Jerry
--
Engineering is the art of making what you want from things you can get.
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Reply by qoo●October 19, 20082008-10-19
On Oct 19, 3:13�pm, Jerry Avins <j...@ieee.org> wrote:
> qoo wrote:
> > I have a confusion here. So please help.
>
> > I have a message signal given as :
>
> > m(t) = 0.5 cos(wt) + 0.3 sin (2wt)
>
> > I also have �a carrier signal whose amplitude is known.
>
> > and now i want to calculate the modulation index. which is given as
> > amplitude of message signal divided by amplitude of carrier. (Remember
> > that i am doing AM.)
>
> > The confusion is that:
>
> > Does the amplitude of message signal be 0.5+0.3=0.8 �???
> > or what else??...I am unable to calculate the amplitude of message
> > signal which I need to calculate modulation index.
>
> > Waiting for your positive reply.
>
> Modulation index is a property of an FM signal. The property you want is
> modulation percentage. Most circumstances that make the modulation
> percentage useful call for peak values. A quick bit of calculus will
> reveal the peak value of m(t). You probably should know how to do that.
>
> Jerry
> --
> Engineering is the art of making what you want from things you can get.
> �����������������������������������������������������������������������
Thanks Jerry :) :) :)
Reply by qoo●October 19, 20082008-10-19
On Oct 19, 3:13�pm, Jerry Avins <j...@ieee.org> wrote:
> qoo wrote:
> > I have a confusion here. So please help.
>
> > I have a message signal given as :
>
> > m(t) = 0.5 cos(wt) + 0.3 sin (2wt)
>
> > I also have �a carrier signal whose amplitude is known.
>
> > and now i want to calculate the modulation index. which is given as
> > amplitude of message signal divided by amplitude of carrier. (Remember
> > that i am doing AM.)
>
> > The confusion is that:
>
> > Does the amplitude of message signal be 0.5+0.3=0.8 �???
> > or what else??...I am unable to calculate the amplitude of message
> > signal which I need to calculate modulation index.
>
> > Waiting for your positive reply.
>
> Modulation index is a property of an FM signal. The property you want is
> modulation percentage. Most circumstances that make the modulation
> percentage useful call for peak values. A quick bit of calculus will
> reveal the peak value of m(t). You probably should know how to do that.
>
> Jerry
> --
> Engineering is the art of making what you want from things you can get.
> �����������������������������������������������������������������������
Thanks jerry :)
Reply by Jerry Avins●October 19, 20082008-10-19
qoo wrote:
> I have a confusion here. So please help.
>
> I have a message signal given as :
>
> m(t) = 0.5 cos(wt) + 0.3 sin (2wt)
>
> I also have a carrier signal whose amplitude is known.
>
> and now i want to calculate the modulation index. which is given as
> amplitude of message signal divided by amplitude of carrier. (Remember
> that i am doing AM.)
>
> The confusion is that:
>
> Does the amplitude of message signal be 0.5+0.3=0.8 ???
> or what else??...I am unable to calculate the amplitude of message
> signal which I need to calculate modulation index.
>
> Waiting for your positive reply.
Modulation index is a property of an FM signal. The property you want is
modulation percentage. Most circumstances that make the modulation
percentage useful call for peak values. A quick bit of calculus will
reveal the peak value of m(t). You probably should know how to do that.
Jerry
--
Engineering is the art of making what you want from things you can get.
�����������������������������������������������������������������������
Reply by qoo●October 19, 20082008-10-19
I have a confusion here. So please help.
I have a message signal given as :
m(t) = 0.5 cos(wt) + 0.3 sin (2wt)
I also have a carrier signal whose amplitude is known.
and now i want to calculate the modulation index. which is given as
amplitude of message signal divided by amplitude of carrier. (Remember
that i am doing AM.)
The confusion is that:
Does the amplitude of message signal be 0.5+0.3=0.8 ???
or what else??...I am unable to calculate the amplitude of message
signal which I need to calculate modulation index.
Waiting for your positive reply.