Re: Voice tone meaning
There is also the use of "voice" in writing to mean the writing style, particularly in business writing.
I can write a brochure that says "Company X has 52 years of experience and is well-equiped to address our customers' data challenges, including data storage issues and archving, and offers solutions that are superior to the many options businesses face, with low start-up barriers and scalable for future growth."
Or I could write one that says "Puzzled over the many data storage systems out there? That's not surprising, considering how many options are out there. But don't worry - we can help! We have solutions that are easy to implement, customized so you don't pay for more than you need, and able to grow as you do."
Totally different "voices."
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.