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Re: Matlab
Posted:
Dec 12, 2012 9:52 PM
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bartekltg <bartekltg@gmail.com> wrote in message <kabfcf$oa5$1@node1.news.atman.pl>...
> W dniu 2012-12-13 03:22, Tanner Handa pisze:
> > bartekltg <bartekltg@gmail.com> wrote in message
> > <kabas4$jv1$1@node1.news.atman.pl>...
> >> W dniu 2012-12-13 01:56, Tanner Handa pisze:
> >> > I am working on a Matlab project and trying to shorten the sound of
> >> this
> >> > frequency. Can you please further explain how to make the sound about
> >> > half a second instead of about 1 second??
> >> >
> >> > This is what I am working with.
> >> >
> >> > freqsamp = 10000;
> >> >
> >> > t = linspace(0,1,freqsamp);
> >>
> >> t = linspace(0, 0.5, freqsamp);
> >>
> >> >
> >> >
> >> >
> >> > a = (sin(1.5*pi*220*t) + sin(1.5*pi*440*t));
> >> > sound(a, freqsamp)
> >>
> >>
> > thanks i have already tried that and it only makes the sound deeper
>
>
> oh, sorry.
>
> t = linspace(0, 0.5, 0.5 * freqsamp);
>
> If we have one seconds, we need freqsamp samples.
> But, if we have 0.5s, we need only half.
>
>
> bartekltg
so how would I be able to make my happy birthday song sound better to make the sounds shorter??
This is what I have and now when i do t = linspace(0, 0.5, 0.5 * freqsamp); it make the frequencies really high pitched.
clear
freqsamp = 10000;
t = linspace(0,1,freqsamp);
a = sin(1.5*pi*220*t) + sin(1.5*pi*440*t);
b = sin(2*pi*220*t) + sin(2*pi*440*t);
c = sin(2.5*pi*220*t) + sin(2.5*pi*440*t);
d = sin(3*pi*220*t) + sin(3*pi*440*t);
e = sin(4*pi*220*t) + sin(4*pi*440*t);
f = sin(4.5*pi*220*t) + sin(4.5*pi*440*t);
g = (sin(5*pi*220*t) + sin(5*pi*440*t))/1.5;
h = sin(5.5*pi*220*t) + sin(5.5*pi*440*t);
i = sin(6*pi*220*t) + sin(6*pi*440*t);
j = sin(6.5*pi*220*t) + sin(6.5*pi*440*t);
sound(a, freqsamp) %HA %3
sound(a, freqsamp) %ppy %3
sound(b, freqsamp) %Birth %5
sound(a, freqsamp) %day %3
sound(f, freqsamp) %TO %8
sound(e, freqsamp) %you %7
sound(a, freqsamp) %Ha %3
sound(a, freqsamp) %ppy %3
sound(b, freqsamp) %Birth %5
sound(a, freqsamp) %day %3
sound(g, freqsamp) %TOOO %10
sound(f, freqsamp) %YOUUU %8
sound(a, freqsamp) %HA %3
sound(a, freqsamp) %PPY %3
sound(j, freqsamp) %BIRTH %15
sound(h, freqsamp) %DAY %12
sound(f, freqsamp) %DEAR %8
sound(e, freqsamp) %JOE %7
sound(b, freqsamp) %EEYY %5
sound(i, freqsamp) %HA %13
sound(i, freqsamp) %PPY %13
sound(h, freqsamp) %BIRTH %12
sound(f, freqsamp) %DAY %8
sound(g, freqsamp) %TO %10
sound(f, freqsamp) %YOU %8
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