16. A computer-implemented speech recognition system for generating text based on an audio speech signal, comprising: an interface component including an audio interface and a transcription interface, the interface component communicatively coupled to an audio source and a transcription source, the interface component configured to: receive the audio speech signal from the audio source via the audio interface, and receive a transcription of the audio speech signal from the transcript source via the transcription interface; a feature extraction component coupled to the interface component, the feature extraction component configured to: receive the audio speech signal from the interface component, and extract acoustic feature values of the audio speech signal at a predefined sampling frequency; a segmentation component coupled to the interface component, the segmentation component configured to: receive the audio speech signal and the transcription of the audio speech signal from the interface component, map written words of the transcription of the audio speech signal to units of corresponding pronunciation objects, and segment the audio speech signal including mapping the units of corresponding pronunciation objects to the received audio speech signal to determine a beginning time and an end time of the mapped units; a grapheme alignment component coupled to the segmentation component, the grapheme alignment component configured to: receive the units of corresponding pronunciation objects, and align one or more of the units of corresponding pronunciation objects to one or more graphemes based on a unit-grapheme mapping; a parameter determination component coupled to the grapheme alignment component, the parameter determination component configured to: receive aligned graphemes from the grapheme alignment component, determine a speed parameter for each aligned grapheme by using the beginning time and the end time of the corresponding aligned one or more of the units of corresponding pronunciation objects; and determine at least one acoustic parameter for each aligned grapheme including averaging the extracted acoustic feature values according to the beginning time and the end time of the corresponding aligned one or more of the units of corresponding pronunciation objects; and a generator component coupled to the parameter determination component, the generator component configured to: receive the aligned graphemes from the parameter determination component, and generate, for each character of the aligned graphemes, a character shape representative of the speed parameter, a character shape representative of the at least one acoustic parameter associated with the respective grapheme, or a character shape representative of the speed parameter and the at least one acoustic parameter associated with the respective grapheme.
18. The computer-implemented speech recognition system of claim 16 , wherein the parameter determination component is further configured to: normalize a plurality of acoustic parameters by applying respective acoustic normalization functions; normalize the speed parameter by applying a speed normalization function; and determine visual shaping parameters based on the normalized speed and acoustic parameters.