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From: Naser Tbakh on 22 Jun 2010 15:07
i have a proplem in this cood plz help

can not do PAM (PULSE AMPLITUDE MODULATION ) SEE

>> %data
fs = 8000;
ts=1.25e-4;
pulse_duration = 5e-5;

% sinusoidal sgnal;
td=1.25e-5;
fd=80000;
t=(0:td:100*td);
fm=10000;
s=sin(fm*t);

%PAM signal generation
pam_s=pam(s,td,ts,pulse_duration);

figure(1);hold on

plot(t,s);
plot(t(1:length(pam_s)),pam_s);
xlabel('time')
ylabel('magnitude')
legend('signal','PAM-signal');


% Coputing magnitude spectrum S(f)
a=((abs(fft(pam_s)).^2));
a=a/max(a);
f=fs*(fs/fd:fs*(fs/fd):(length(a))*fs*(fs/fd));

figure(2)
plot(f,a);
xlabel('time')
ylabel('magnitude')

%finding zeros
index=find(a<1e-5);

% The firest zero
fprintf('Envelopes gose through zero for the firest time = %6d\n' , min (index)*fs*(fs/fd))

function pam_s=PAM(s,td;ts;pulse_duration);

potd= pulse_duration/td;
tsotd=ts/td;
y=zeros(1,length(s));
tt=1:(tostd):length(tt);
y(tt(kk):tt(kk)+potd-1)=s(tt(kk)).*ones(1,potd);

pam_s=y(1:lenghth(s)-potd);
??? Error using ==> error
Formatted arguments cannot be non-scalar numeric matrices.

Error in ==> pam at 41
error('Bioinfo:InvalidBlosumN',...

From: us on 22 Jun 2010 15:17
"Naser Tbakh" <natdonat(a)hotmail.com> wrote in message <hvr1l9$3pk$1(a)fred.mathworks.com>...
> i have a proplem in this cood plz help
>
> can not do PAM (PULSE AMPLITUDE MODULATION ) SEE
>
> >> %data
> fs = 8000;
> ts=1.25e-4;
> pulse_duration = 5e-5;
>
> % sinusoidal sgnal;
> td=1.25e-5;
> fd=80000;
> t=(0:td:100*td);
> fm=10000;
> s=sin(fm*t);
>
> %PAM signal generation
> pam_s=pam(s,td,ts,pulse_duration);
>
> figure(1);hold on
>
> plot(t,s);
> plot(t(1:length(pam_s)),pam_s);
> xlabel('time')
> ylabel('magnitude')
> legend('signal','PAM-signal');
>
>
> % Coputing magnitude spectrum S(f)
> a=((abs(fft(pam_s)).^2));
> a=a/max(a);
> f=fs*(fs/fd:fs*(fs/fd):(length(a))*fs*(fs/fd));
>
> figure(2)
> plot(f,a);
> xlabel('time')
> ylabel('magnitude')
>
> %finding zeros
> index=find(a<1e-5);
>
> % The firest zero
> fprintf('Envelopes gose through zero for the firest time = %6d\n' , min (index)*fs*(fs/fd))
>
> function pam_s=PAM(s,td;ts;pulse_duration);
>
> potd= pulse_duration/td;
> tsotd=ts/td;
> y=zeros(1,length(s));
> tt=1:(tostd):length(tt);
> y(tt(kk):tt(kk)+potd-1)=s(tt(kk)).*ones(1,potd);
>
> pam_s=y(1:lenghth(s)-potd);
> ??? Error using ==> error
> Formatted arguments cannot be non-scalar numeric matrices.
>
> Error in ==> pam at 41
> error('Bioinfo:InvalidBlosumN',...
>

one of the solutions

% in the command window
dbstop if error;
% run your code
% it will stop, open the file, and put your cursor at the offending location
% now inspect all the inputs, eg, POTD,...
% if everything works...
dbclear all;

us
From: Naser Tbakh on 22 Jun 2010 16:06
"us " <us(a)neurol.unizh.ch> wrote in message <hvr284$col$1(a)fred.mathworks.com>...
> "Naser Tbakh" <natdonat(a)hotmail.com> wrote in message <hvr1l9$3pk$1(a)fred.mathworks.com>...
> > i have a proplem in this cood plz help
> >
> > can not do PAM (PULSE AMPLITUDE MODULATION ) SEE
> >
> > >> %data
> > fs = 8000;
> > ts=1.25e-4;
> > pulse_duration = 5e-5;
> >
> > % sinusoidal sgnal;
> > td=1.25e-5;
> > fd=80000;
> > t=(0:td:100*td);
> > fm=10000;
> > s=sin(fm*t);
> >
> > %PAM signal generation
> > pam_s=pam(s,td,ts,pulse_duration);
> >
> > figure(1);hold on
> >
> > plot(t,s);
> > plot(t(1:length(pam_s)),pam_s);
> > xlabel('time')
> > ylabel('magnitude')
> > legend('signal','PAM-signal');
> >
> >
> > % Coputing magnitude spectrum S(f)
> > a=((abs(fft(pam_s)).^2));
> > a=a/max(a);
> > f=fs*(fs/fd:fs*(fs/fd):(length(a))*fs*(fs/fd));
> >
> > figure(2)
> > plot(f,a);
> > xlabel('time')
> > ylabel('magnitude')
> >
> > %finding zeros
> > index=find(a<1e-5);
> >
> > % The firest zero
> > fprintf('Envelopes gose through zero for the firest time = %6d\n' , min (index)*fs*(fs/fd))
> >
> > function pam_s=PAM(s,td;ts;pulse_duration);
> >
> > potd= pulse_duration/td;
> > tsotd=ts/td;
> > y=zeros(1,length(s));
> > tt=1:(tostd):length(tt);
> > y(tt(kk):tt(kk)+potd-1)=s(tt(kk)).*ones(1,potd);
> >
> > pam_s=y(1:lenghth(s)-potd);
> > ??? Error using ==> error
> > Formatted arguments cannot be non-scalar numeric matrices.
> >
> > Error in ==> pam at 41
> > error('Bioinfo:InvalidBlosumN',...
> >
>
> one of the solutions
>
> % in the command window
> dbstop if error;
> % run your code
> % it will stop, open the file, and put your cursor at the offending location
> % now inspect all the inputs, eg, POTD,...
> % if everything works...
> dbclear all;
>
> us

thanx for help me but i am new to matlap

i know it is hard for but can you fix it and give me the final code plz

this is i think the error

if ~ismember(N,possibleN)
error('Bioinfo:InvalidBlosumN',...
'PAM%d does not exist. Valid numbers are 10:10:500.',N);
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