public static double[][] toMatrix(
	double[][] audioVectors )
{
	int m = audioVectors.length;
	int n = 0;
	for ( int i = 0; i < m; ++i )
	{
		int tmp = audioVectors[i].length;
		if ( tmp > n )
			n = tmp;
	}
	double[][] audioMatrix = Matrix.newMatrix(m, n);
	for ( int i = 0; i < m; ++i )
	{
		for ( int j = 0; j < audioVectors[i].length; ++j )
			audioMatrix[i][j] = audioVectors[i][j];
		for ( int j = audioVectors[i].length; j < n; ++j )
			audioMatrix[i][j] = 0.0;
	}
	return(audioMatrix);
}