Speech Perception Worksheet
| Components | Description/Function |
| Acoustic signal | The acoustic signal is the sound produced by pushing air from the lungs, through the vocal chords, then into the vocal tract. You can alter the sounds by using the tongue, lips, teeth, jaw, and soft palate. |
| Articulators | Articulators are when we form sounds of words by using the tongue, lips, teeth, jaw, and soft palate. They allow us to change the sounds we make and this makes up our speech and other vocal cues. |
| Formants | When we change the shape of the vocal tract, it changes the frequency and causes peaks of pressure, thus altering the frequencies. This is how we can form vowels. We call the peas of the altering frequencies formants. |
| Sound spectrogram | Sound spectrogram is when we form words the different frequencies that are made have individual vibrations from using the formants. The sound spectrogram shows the pattern of frequencies and intensities over time that make up the acoustic signal. |
| Formant transitions | Formant transitions are rapid changes in frequency preceding or following formants. |
| Phonemes | Phonemes is the shortest segment of speech and if changed it would change the meaning of a word. |
| Categorical perception | Categorical perception occurs when stimuli that exits along a continuum are perceived as divided into discrete categories. |
| McGurk effect | The McGurk Effect is the interaction between hearing and vision within speech perception. The auditory component of one sound is paired with the visual component of another sound, which leads to the perception of a third sound. |
| Speech segmentation | Speech segmentation is identifying the boundaries between words, syllables, and phonemes within spoken languages. |
| Transitional probabilities | Transitional probability is mainly used for mathematical terms and it is used to describe the actions and the reactions to the Markov Chain. |
| Indexical characteristics | Indexical characteristics are the qualities of speech and language that give the speaker informational and attitudinal cues within their speech. |
| Broca’s aphasia | Broca’s aphasia is an injury to the left frontal lobe of the brain that was caused by a stroke. The frontal regions of the left hemisphere can bring on different language and speech issues. |
| Wernicke’s aphasia | Wernicke’s aphasia is when someone endures poor auditory processing, along with poor speech and repetition. Wernicke’s aphasia is caused by damage to the temporal lobe of the brain. |
| Dual-stream model of speech perception | Dual stream model of speech perception is when there are two streams for processing verbal and auditory stimuli. These two streams are called the dorsal and the ventral processing streams. |
| Motor theory of speech perception | Motor theory of speech perception is known as the hypothesis in which people perceive spoken words by identifying the vocal tract gestures with which they are properly pronounced, rather than identify the sound patterns that speech generates. |
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