Abstract Alzheimer Mental health illnesses are a problem that is growing fast in today's society, Alzheimer's disease is one of those diseases that leads to dementia, mental health problem. A primary, now irreversible and progressive neurodegenerative dementia is considered. The complexity of the causes of the disease, its diagnosis difficult and different risk factors come into play that make it one of the diseases most investigated today. Greater knowledge of the disease has been achieved from neuroimaging and neuropathological and genetic findings. This disease is the most common form dementia in adults, can occur in people aged between 65 and 75 years, and exceptionally, in young adults from 30 years. The reversal of the generational pyramid is another great reason for research in this field quickly acquire the importance it deserves. Alzheimer patients show a gradual decline in the use of language in the course of the stages of the disease. In addition, abnormalities in speech and language deficits are directly related to the severity of the type of dementia, and manifesting itself in the initial phase of the disease. The abnormal expression of emotional states experienced by patients with dementia this is another important step for the early detection of Alzheimer's disease. This project aims to develop a noninvasive tool based on the digital processing spontaneous speech, for early detection of Alzheimer's disease and developmental control of patients. It is intended to assess different aspects that so far not consist references, such as: a) acoustic voice evaluation (stability of voice, spectral richness, presence of noise and irregularities in the masses of the strings ), b) and c assessment of emotional charge) different characteristics (linguistic and paralinguistic) language. A novel way be held a database with regular monitoring on the same patients with a duration of ten months in collaboration with the reference center of the Canary Islands in care for patients with Alzheimer's disease, Alzheimer Canarias.

Writing 8 Dear Laura, I send this card because I'm going to move to Madrid to a small house near to Vallecas the next week. I will do a special dinner and I would like to invite you. I'm sure that you will enjoy it. I will be waiting for your message. See you soon, Best María.

Writing 7 Dear Laura, Today, I'm moving to a new flat near to Barcelona, because I need a bigger flat that mine. Also I want a flat more close to my work. Since you have time, I want to invite you to visit my new home because I know that you willl like. Best, María.

W-P2 PET Dear Pat, I'm so sorry but... Do you remember your black sunglasses? I lose them yesterday. I don't know what to say because it's very embarrasing for me... I think I forgot them at the bus station, but I'm keen to buy you another ones: same brand, same style... Best wishes, María.

W-P3 PET Dear Peter, You're such a lucky boy! Your grandmother must be a generous woman. I think you could do a lot of interesting things with this money. To tell the truth, I may not buy a camera because you've got a very good mobile phone, and you can already take spectacular photos... So, do you really need a camera? I don't think so. To be honest, I don't have enough money to do what I want, but if I were you, I spent all this precious money travelling to a new and different country... I'm sure that if you finally organize a good travel, you could convince your parents without any effort! Good luck! María.

Writing 9 - Little e-mail to a friend Dear Chris, First of all, thank you for your invitation. I obviously accept it. Could I help you to prepare the party? I have been thinking about some ideas. For example... What about buying something for the teacher? Do you have any good idea? Best wishes, María