20 Journal of Language, Literacy and Learning in STEM Education www. grnjournal.us AMERICAN Journal of Language, Literacy and Learning in STEM Education Volume 02, Issue 01, 2024 ISSN (E): 2993-2769 Speech Perception as a Cognitive Process Nazirova Sh. A., Ph.D Associate Professor of Department of Foreign language and literature National University of Uzbekistan named after Mirzo Ulugbek, Tashkent Sadikova D. D 1st year Master’s degree National University of Uzbekistan named after Mirzo Ulugbek, Tashkent Annotation: Speech perception is the key step to cognitive process in language use and the crucial topic in psycholinguistic study. This paper analyzed speech perception from the aspects of structure, process and importance of each stage. Keywords: speech signals, sound waves, auditory nerve, sound discrimination, cognitive process, context, voice. The study of speech perception as a cognitive process involves understanding how humans process and interpret speech signals. It is a complex and multifaceted field that involves a range of cognitive processes such as memory, auditory perception, cognitive linguistics, and speech signal processing, among others. The study of how sentences are understood – the general problem of speech perception – must, obviously, remain within narrow limits unless it makes use of this basic property of a perceptual model. [1, 104] Speech perception is an active and ongoing process that incorporates various sensory cues from the speech signal, such as pitch, amplitude, and timbre, and cognitive cues such as language semantics, phonetics, and memory. Humans are able to perceive speech even when the signal is severely degraded, thanks to the flexibility of the cognitive processes involved. The structure of speech perception refers to the various stages and processes involved in understanding and perceiving spoken language. The structure of speech perception can be represented as a hierarchical process, where each level builds upon the previous one until the overall meaning of the speech is understood. The structure of speech perception can be divided into the following stages: Audio signal: The first stage of speech perception is the conversion of sound waves into electrical signals by the auditory nerve. The auditory nerve is responsible for transmitting these signals to the brain. The hearing apparatus is composed of the outer ear, the middle ear, the inner ear, and the auditory nerve, which carries the auditory signal to the brain. The outer ear collects sound waves and directs them into the ear canal. The middle ear uses a small bone called the ossicles to amplify the sound waves and transmit them to the inner ear. The inner ear contains the cochlea, which is the primary site of sound detection and transmission to the brain. The auditory nerve is responsible for transmitting the auditory signal to the brain for further processing. Sound discrimination: At this stage, the brain distinguishes one sound from another, such as the difference between the sounds of the letters “p” and “b”. Sound discrimination is necessary to comprehend speech accurately. [2, 170] 21 Journal of Language, Literacy and Learning in STEM Education www. grnjournal.us Phoneme recognition: At this stage, the brain recognizes and identifies the individual sounds of a spoken language, such as the sounds of the vowels and consonants. The ability to recognize and distinguish between different phonemes is key to accurate speech perception. For example, the brain must recognize and distinguish between the different phonemes of the English language, such as the sounds of the letters “a”, “e”, “i”, “o”, and “u”. This stage is also important for accurate speech perception, as it allows the listener to understand the meaning of words and sentences. Word recognition: This stage involves recognizing and understanding the individual words in a sentence based on the context in which they are used. This stage involves processing and interpreting the sounds and sequences of phonemes to understand and remember the meaning of words and the organization of language. Sentence comprehension: At this stage, the brain interprets the meaning of the entire sentence based on the context, voice, and tone of the speaker. This stage requires the ability to understand the relationship between different words and phrases in a sentence, and the ability to comprehend the overall meaning and intent of the speaker. [3, 380] Speech recognition: This is the final stage of speech perception, where the brain interprets the overall meaning of the speech based on the context, voice, and tone of the speaker. Each of these stages is important for accurately comprehending and perceiving spoken language, and each stage builds upon the previous one. It’s important to note that these stages can overlap and interact with each other, and different individuals may process speech differently depending on various factors such as their native language and experience with different dialects. The more efficient each stage is performed, the more accurately the overall meaning of the speech is understood. Speech perception is a complex cognitive process that involves multiple pathways in the brain, with different regions processing different aspects of speech. The process of speech perception involves several stages, including: 1. Auricular reception: This is the stage where soundwaves are received by the outer ear and converted into electrical signals that are transmitted to the brain. 2. Central auditory processing: This is the stage where the electrical signals are further processed and analyzed to extract linguistic information from the speech signal. 3. Phoneme identification: This is the stage where phonemes are recognized and identified in the speech signal. 4. Word recognition: This is the stage where words are recognized and identified in the speech signal, based on the combinations of phonemes. 5. Sentence processing: This is the stage where the meaning of the sentence is understood and processed. The cognitive aspects of speech perception involve the use of cognitive skills such as attention, memory, and working memory to interpret and process the speech signal. The accuracy and efficiency of speech perception are influenced by factors such as the acoustic quality of the speech signal, the listener’s ability to process and interpret the speech signal, and the speaker’s ability to articulate clearly and speak at an appropriate pace. The following is an example of how the process of speech perception might play out: Say you’re at a crowded party and you’re trying to make sense of the conversations happening around you. The noise level is high, and it’s difficult to distinguish the sound of the person you’re talking to from the background noise. The first thing your brain does is “listen for” the sound of the person’s voice, which involves identifying and filtering out the background noise. Once the person’s voice is clearly heard, your brain processes the sound to extract the individual sounds of the words being spoken. 22 Journal of Language, Literacy and Learning in STEM Education www. grnjournal.us This is the speech recognition step of speech perception. At this stage, your brain must identify the sounds of the letters or phonemes in each word. In the case of English, this can be particularly challenging because of the large and varied inventory of phonemes, as well as similarities between certain sounds. For example, your brain must be able to distinguish between the sounds of the letters “s” and “z”, or between the sounds of the letters “p” and “t”. Once your brain has correctly identified the individual sounds of each word, it is then able to form these sounds into a word, and then a sentence. This is how we are able to comprehend spoken language in noisy environments. In the example of the crowded party, your brain is able to recognize the individual words of the person’s conversation and comprehend the meaning of the sentence. This is the result of the complex cognitive processing that occurs during the speech recognition stage of speech perception. In conclusion, speech perception is a complex process that involves several cognitive stages, processes and structure that influenced by a wide range of factors such as individual differences, acoustic environment, and contextual factors; and allow us to comprehend and understand spoken language. This process is critical for effective human communication and has been studied extensively in the fields of psycholinguistics and linguistics. REFERENCES 1. Chomsky N. Language and Mind: Massachusetts Institute of Technology, 2006 2. Matthew J., Morton A. Gernsbacher. Handbook of Psycholinguistics: Academic Press of Elsevier, 2006 3. Rodman R., Fromkin V. An introduction to language: Wadsworth, 2011 4. Sternberg Robert J. and Karin Sternberg. Cognitive Psychology: Wadsworth, Cengage Learning, 2012 5. Wind Cowles. Psycholinguistics 101: Springer Publishing Company, 2011