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From: pa@appmag.com (Pierre Asselin)
Newsgroups: comp.lang.c
Subject: Re: Numerical Recipes: Error in Chapter 12?
Message-ID: <1991Mar4.164655.244@appmag.com>
Date: 4 Mar 91 16:46:55 GMT
References: <11617@pasteur.Berkeley.EDU>
Organization: R&D, Applied Magnetics, Goleta, CA
Lines: 15


splin@mowlavi.berkeley.edu (Steven Lin) writes:


~     Is the definition of the Fourier transform, (12.0.1), (12.0.3), (12.1.7),
~and elsewhere throughout the entire chapter incorrect?  Specifically, the
~exponential terms in (12.0.1) should be switched.  [...]

Partly arbitrary.  If you are a physicist, everything is OK.   If
you are an electrical engineer, change the sign of `i'.

The EE convention is more natural when dealing with time signals.
The physicist convention is handy for waves in space and time.

  --Pierre Asselin, R&D, Applied Magnetics Corp.  I speak for me.