Klasifikace vzorů pomocí fuzzy neuronových sítí

| Kategorie: Diplomové, bakalářské práce  | Tento dokument chci!

Práce popisuje základy principu funkčnosti neuronů a vytvoření umělých neuronových sítí. Je zde důkladně popsána struktura a funkce neuronů a ukázán nejpoužívanější algoritmus pro učení neuronů. Základy fuzzy logiky, včetně jejich výhod a nevýhod, jsou rovněž prezentovány. Detailněji je popsán algoritmus zpětného šíření chyb a adaptivní neuro-fuzzy inferenční systém. Tyto techniky poskytují efektivní způsoby učení neuronových sítí.

Vydal: FCC Public s. r. o. Autor: Tamás Ollé

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The vibrations sound waves are perceived by eardrums the inner ear, and these oscillations are forwarded specific part of brain for further processing. THE SPEECH SIGNAL Speech/voice recognition difficult task performed computer system [12]. A speaker can control and categorize sentence and make declarative, interrogative imperative based the speaker’s purpose. Each word sentence has specific meaning and function and can divided into smaller segments: syllables and phonemes. Speech communication crucial channel for conveying various kinds of information that can divided into three categories terms its content: linguistic, paralinguistic and nonlinguistic. Higher pitch issues higher tone and against, lower pitches lower tone. Speech sequence waves which are transmitted through medium and are characterized some features, including characteristic frequencies and corresponding intensities [13]. The three deciding factors when talking about human-like perception of speech are loudness, pitch and quality. The speech due the effects paralinguistic information changing among neutral, admirable, suspicious and disappointed states. An important difference between linguistic and non-linguistic information that linguistic information can controlled the speaker. Nonlinguistic information concerns idiosyncratic factors and emotional states (such anger, sadness and delight) the speaker. Linguistic information can defined “symbolic information that is represented set discrete symbols and rules for their combination“ [14]. The quality sound perceptual correlate its spectral content related the fundamental frequency the vocal vibration the speaker organ [13]. Paralinguistic information defined “information that not inferable from a written counterpart but deliberately added the speaker modify supplement linguistic information” [14] and can have both discrete and continuous characteristics.28 6. Besides linguistic and paralinguistic information, speech also contains nonlinguistic information. Although wide range commercial products were launched the last decade, absolute solution has not been found out yet, and many research areas have still remained opened the field. The primary objective human speech communication transfer linguistic information. Idiosyncratic factors which affect the characteristics speech are age, gender, individual morphological characteristics, health condition and possible physical handicaps. Loudness represents the energy (intensity) of the sound. Pitch is responsible for the tone the sound. The phoneme the smallest segment sound. . Generally, the speaker cannot control these factors, although possible for speaker imitate some characteristics these factors actors [14]. The greater the amplitude is, the louder the sound appears