Take easy with some of the regional entonation from Brazillian speakers.

                    Are the pronunciation of some letters really different in Portuguese?

Yes, it´s true.

As it happens even in other languages as in  English for example in the Unites States, here in Brazil we also have some letters that present a different pronunciation according to the region of the country that you are.

The letter "R" for example, in some regions from  southest as in Rio de Janeiro, its pronunciation is long and stressed, in São Paulo is shorter but also stressed..
However, in Bahia for instance the letter"R" has a lighter pronunce.
The same happens with letter "S" that in some regions like in the North of the country is very stressed and in the South it isn´t stressed at all.
But even though this diffrences exist, they aren´t reason enough to cause misunderstanding in the communication, they are going, of course demand a little bit more the attention from the listener and it´s O.K.
And, wu have to say that, these regional differences here in Brazil are a part of our...let´s say our charm as a great nation formed by many cultures and races all together.

So, when you come to Brazil, wherever you come from,enjoy the different accents you´re going to find around and have fun!

See you!

By: Rosemeire de Oliveira.
English and Portuguese teacher, tranlator and interprete for both languages.

r.meire.oliveira@gmail.com