Timothy B. Terriberry authored Jul 30, 2011 and Jean-Marc Valin committed Jul 30, 2011

Although the current encoder uses does not use them, the decoder
might have tried to use offsets beyond the end of these tables.
Inserting values here ensures that the stream can be decoded in a
well-defined way.
The particular values of these tables were chosen to match a
Gaussian distribution with sigma=3.93.