[FFmpeg-devel] [PATCH] aacdec: dsputilize the scalar product in intensity stereo

Måns Rullgård mans
Sat Feb 19 12:46:40 CET 2011

Nicolas George <nicolas.george at normalesup.org> writes:

> Le primidi 1er vent?se, an CCXIX, M?ns Rullg?rd a ?crit?:
>> The scalar product of two vectors is the sum of the element-wise
>> products.
> The usual English term for that is dot product. "Scalar product" is correct
> but is not idiomatic in English, which may explain why people are confused.
> (Although it seems that most languages despite English use some form of
> "scalar product", except Norsk, where it looks "inner product".)

The scalar product is commonly called the dot product due to its
mathematical notation using a dot.  It is the special case on Rn of the
more general inner product.

The Norwegian word for dot product is skalarprodukt.

M?ns Rullg?rd
mans at mansr.com

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