Re: [Tftb-help] use of tfrstft

[Eric Chassande-Mottin]

dear Didier,

what is the contents of your vector t?

eric

On Fri, 8 Apr 2011, FLOTTE Didier wrote:

> hello,
>
> We try to use the function tfrstft with a long signal, around 50,000 points and 
> an error is occured:
>
> ??? Subscript indices must either be real positive integers or logicals.
> Error in ==> tfrstft at 85
> tfr(indices,icol)=x(ti+tau,1).*conj(h(Lh+1+tau));
> Error in ==> programme at 48
>        tfr=tfrstft(file',t,128);
>
> file' is the signal, t give the vector time and we chose a length of 128 for 
> the number of frequency bins. However, if we reduce the file vector to 256 
> points, the function works well.