why this message error ?:Array indices must be positive integers or logical values
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Hi,
When i write this little script:
---------------------------------------------------------------------------------------------------------
demo matlab
t = (10:1:200)';
y = sin(2*pi*50*t)
z = y(t-10)
w = y+z
plot(t(1:50),w(1:50))
sound(w,Fs);
-------------------------------------------------------------------------------------------------------
there is a message error: message error: Array indices must be positive integers or logical values.
Howewer,when i write this:
-----------------------------------------------------------------------------------------------------
demo matlab
t = (0:0.001:100)';
y = sin(2*pi*50*t)
plot(t(1:50),y(1:50))
sound(y,Fs);
------------------------------------------------------------------------------------------------------
there is no message error.
Why?
thanks
采纳的回答
Image Analyst
2018-9-30
0 个投票
It's pretty well explained by the FAQ: http://matlab.wikia.com/wiki/FAQ#How_do_I_fix_the_error_.22Subscript_indices_must_either_be_real_positive_integers_or_logicals..22.3F
更多回答（2 个）
jérôme TAÏEB
2018-9-30
0 个投票
3 个评论
Image Analyst
2018-9-30
Who are you talking to? This should be a comment to someone , not an answer to your original question.
Try soundsc().
Star Strider
2018-9-30
The sound is there. It is of too short a duration to notice:
signal_duration = (200-11)/44000
signal_duration =
0.00429545454545455
It only lasts for 4.3 milli-seconds!
jérôme TAÏEB
2018-9-30
编辑：jérôme TAÏEB
2018-9-30
Image Analyst
2018-9-30
0 个投票
See attached sound making demo. It doesn't make your sound but adapt it as needed.
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