Swahili Digit Triplets test

Four test lists with 27 digit triplets in Swahili. All recorded material was filtered with a high pass 18 dB/octave FIR filter at 50 Hz to remove unwanted low frequency noise. To only include digits with the same number of syllables, the digit 0 (”sifuri”) was excluded. The remaining numbers 1-9 have two syllables in Swahili. The quasi-stationary masking noise was created using all digits from the selected speech material to ensure a long-term average spectrum identical to the long-term average spectrum of the triplets.