Problems of phonostylistics

Informational style:
1 a formal manner of presentation with occasionally interested оvertones and a number of hesitation and breath-taking pauses.
2 normal or increased loudness, moderate or rather slow rate (tempo of speech), varied pitch levels, ranges and intonation patterns.
3 businesslike, rather reserved voice timbre, systematic rhythm, the accentuation of the semantic centres through the use of expressive high falls and falling-rising tones, the use of several low falls within an intonation group and a phrase.
4 centralized accentuation, subjective isochrony contrasting with the rhythmicality achieved by the use of final categoric falls.
The academic style:
l The academic style represents the language of factual information, thus attitudinal and emphatic functions of intonation are of secondary importance here.
2 High falling and falling-rising terminal tones are widely used for logical and contrastive emphasis; the rhythmic organization of a scientific text is properly balanced by the alternation of all prosodic features.
3 The prosodic features of the academic-style reading are not greatly varied.
4 The phonostylistic characteristics of scientific discourse reading a overloaded with variations in tempo, loudness, pauses, pitch levels and ranges.
Publicistic style:

1. 
   intellectual and volitional information.
   
2. 
   volitional and desiderative information.
   
3. 
   attitudinal and emphatic meanings of intonation.
   
4. 
   a combination of appropriate prosodic features which are realized in other phonostyles.
   

The declamatory style is called an artistic intonation style, the acquired style of the stage because:
l this style manifests itself in a written form of the language read aloud or recited.
2 attitudinal, volitional and intellectual functions of intonation come to the fore in this style, having the status of a style-ifferentiating value.
3 this style is performed on the stage, on the screen, on the radio, in a classroom.
4 this style is realized through all sorts of emotional and expressive devices requiring professional skills.