Cepstral Pitch Tracker

    static unsigned int tableSize = 0;

    static int *table = 0;

    if (tableSize != n) {

	delete[] table;

	table = new int[n];

	for (i = 0; i < n; ++i) {

	    m = i;

	    for (j = k = 0; j < bits; ++j) {

		k = (k << 1) | (m & 1);

		m >>= 1;

	    }

	    table[i] = k;

	}

	tableSize = n;