blind-audio-test

#!/bin/bash

readonly TEST_COUNT=$1
readonly FILE1="$2"
readonly FILE2="$3"

readonly FILENAME1="${FILE1%.*}"
readonly FILENAME2="${FILE2%.*}"

# write FILE1 and FILE2 $TEST_COUNT times in play_order
for (( i = 1 ; i <= ${TEST_COUNT} ; i++ )); do
    play_order="${play_order} ${FILE1} ${FILE2}"
done
# shuffle play_order
play_order=$(gshuf -e $play_order)

# split play_order at spaces into array
read -a play_order <<< $play_order

read_guess() {
    read -p "guess $FILENAME1 or $FILENAME2: " guess
    echo -en "\033[1A\033[2K"
}

(( correct_guesses_file1 = 0 ))
(( correct_guesses_file2 = 0 ))

# iterate element by element through play_order
for item in ${play_order[*]}; do
    afplay -t 2 "$item"
    read_guess

    while [ "$guess" != "$FILENAME1" -a "$guess" != "$FILENAME2" ]; do
        printf "invalid guess. guess again\n"
        read_guess
    done
    
    if [ "$item" == "$FILE1" -a "$guess" == "$FILENAME1" ]; then
        (( correct_guesses_file1+=1 ))
    fi

    if [ "$item" == "$FILE2" -a "$guess" == "$FILENAME2" ]; then
        (( correct_guesses_file2+=1 ))
    fi
done

(( wrong_guesses_file1 = TEST_COUNT-correct_guesses_file1 ))
(( wrong_guesses_file2 = TEST_COUNT-correct_guesses_file2 ))

printf "correct guesses for %s: %d\n" "$FILENAME1" $correct_guesses_file1
printf "  wrong guesses for %s: %d\n" "$FILENAME1" $wrong_guesses_file1

printf "correct guesses for %s: %d\n" "$FILENAME2" $correct_guesses_file2
printf "  wrong guesses for %s: %d\n" "$FILENAME2" $wrong_guesses_file2

printf "\n"

(( pct_correct_file1 = $correct_guesses_file1*100 / TEST_COUNT ))
(( pct_correct_file2 = $correct_guesses_file2*100 / TEST_COUNT ))
(( pct_correct_total = ($correct_guesses_file1 + $correct_guesses_file2) * 100 / (2*TEST_COUNT) ))

printf "%3d%% correct for %s\n" $pct_correct_file1 "$FILENAME1"
printf "%3d%% correct for %s\n" $pct_correct_file2 "$FILENAME2"
printf "%3d%% correct totally\n" $pct_correct_total

exit 0