x variables are not initialised per execution of say

[kevinjwalters]

The x "array" of variables which represent some intermedate values inside the filter are only initialised once when the program runs due to C/C++ rules for static variables. The code can be seen on

Talkie/Talkie/talkie.cpp

Line 152 in 7f57628

static int16_t x0,x1,x2,x3,x4,x5,x6,x7,x8,x9,x10;

Should those be zero'd everytime at the start of say function? At the moment a second invocation of say is very likely to generate slightly different output for the same input data, albeit only briefly at the start.

Also, x10 is never used in the program.

I've not executed this code, I've just inspected it...