[vorbis-dev] Dot Product

[Stephen So]

programmer_ted wrote:

>
>> Yes, this is correct. Actually there're 3 products:
>>
>> 1) cross product: (defined in R^3)
>>    vector X vector --> vector
>> 2) dot product:
>>    vector X vector --> vector
>> 3) scalar product:
>>    vector X vector --> scalar
>
>
> Actually, all the sources I've read from say the dot product and 
> scalar product are the same thing, and they produce a scalar.  Cross 
> product is a vector that is perpendicular to the vectors used.

<p>Yep, the dot product and scalar product are the same thing and the 'dot 
product' mentioned in the Vorbis docs is not the same as the 
mathematical definition.  Maybe the term, 'element-by-element product' 
is more fitting. ;)

<p>
-- 
--------------------------------------------------
Stephen So, BEng(Hons)

PhD Student, 
Signal Processing Laboratory,
School of Microelectronic Engineering,
Faculty of Engineering and Information Technology,
Griffith University, Nathan Campus,
Brisbane, QLD, Australia, 4111.

Phone: +61-7-3875 3754
E-mail: s.so at griffith.edu.au
--------------------------------------------------

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