STI

 Calculation of the Speech Transmission Index (STI)
 
 Syntax:    [STI_val, ALcons, STI_val_approx, ALcons_approx] = STI(ImpulseResponse, fs, OctaveFilters)
       This function calculates the Speech Transmission Index from a given
       impulse response. Octave band filters (125Hz-8kHz) can be passed to
       the function as an array for faster computation.
 
 Inputs: 
     ImpulseResponse - Impulse response of the channel to test
     fs - Sampling frequency of the impulse response
     OctaveFilters - Array of MATLAB octave band filters
 
 Outputs: 
     STI_val - The Speech Transmission Index result
     ALcons - Articulation loss of consonants result
     STI_val_approx - STI approximation from computable bands if fs too low
     ALcons_approx - ALcons approximation from computable bands if fs too low
 
 Example: 
   y=sinc(-7999:8000);
     fs=44100;
     [STIval,ALcons,STIval_,ALcons_]=STI(y,fs)
     fs=16000;
     [STIval,ALcons,STIval_,ALcons_]=STI(y,fs)
     fs=8000;
     [STIval,ALcons,STIval_,ALcons_]=STI(y,fs)
 
 See also: STI_BandFilters.m, extractIR.m, synthSweep.m