matlb R7,and The instruction ( thd(x)) ?

2014 1 2
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更新时间：2014 1 3
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I have matlab R7 , But when used instruction thd(x) in M file get this message?
??? Undefined command/function 'thd'.

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Jan
Jan 2014-1-2

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Which Matlab 7 version are you talking of?
Do you have the signal processing toolbox installed and licensed?

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Wayne King
Wayne King 2014-1-2

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To follow up on Jan's answer, thd() was introduced in R2013b, so you would have to have the latest release of MATLAB -- 8.2.0.701 (R2013b) AND the Signal Processing Toolbox to use thd()

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Mary Jon
Mary Jon 2014-1-3
Mr.King thd() not introduced in R2013a only in R2013b?
Wayne King
Wayne King 2014-1-3
That is correct, thd() was introduced in R2013b in the Signal Processing Toolbox.

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