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Overview of Normal Speech. Acoustic Features of Speech. Suprasegmentals Vowels Consonants. Suprasegmentals…. Pitch Intensity Duration. Vowels and Diphthongs…. Good vowel production means proper development of tongue control
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Acoustic Features of Speech Suprasegmentals Vowels Consonants
Suprasegmentals… • Pitch • Intensity • Duration
Vowels and Diphthongs… • Good vowel production means proper development of tongue control • Diphthongs: “A quick but smooth movement from one sound to another” • Production is influenced by consonant context as well as speed of production
Consonants… • Classified according to three articulatory dimensions • Manner • Place • Voicing
Manner… • Plosives • Stops • Nasals • Semivowels • Liquids • Fricatives • Affricates
Manner - Plosives… • Produced by closing some portion of the vocal tract and then releasing the pressure built up in the process as a sharp burst • /p/, /t/, /k/
Manner - Stops… • Much the same as a plosive except they are unreleased and therefore have no burst characteristics • /b/, /d/, /g/
Manner - Fricatives… • Produced by creating such a small aperture in the vocal tract that the breath stream becomes turbulent and thus causes noise at the point of constriction. • /wh/, /f/, /th/ (they), /v/, /s/, /sh/, /th/ (that), /z/, /dz/, casual
Manner - Nasals… • Produced by stopping the oral tract with either the tongue or the lips and lowering the velum, thus coupling the oral and nasal cavities. • /m/, /n/, /ng/
Manner - Semivowels… • Formed in the same way as the vowels /u/ (who) and /i/ (ease) are, but with greater vocal tract restriction. These do not occur in word-final positions. • /w/ (we), /j/ (you)
Manner - Liquids… • Produced with a relatively open vocal tract, the tongue creating a partial occlusion and a diversion of the breath stream within the oral cavity. • /l/, /r/
Manner - Affricates • Formed by releasing a stop with a fricative. • /ch/, /j/ (jeep)
Place… • Place specifies the point of greatest constriction in the vocal tract during articulation. Sounds may be described as… • Bilabial • Labiodental • Linguadental • Alveolar • Palatal • Velar • Glottal
Place…What’s Production • Of sounds’ three dimensions: frequency, intensity and duration, FREQUENCY carries the most important information on place of production.
Voice… • Voicing is a binary dimension! If the vocal cords vibrate as the sound is produced it is regarded as voiced, and if they do not, as unvoiced.
It’s All On A Continuum… • Vocalization • Suprasegmentals • Vowels and Diphthongs • Step One Consonants • Step Two Consonants • Step Three Consonants • Step Four Consonants • Consonant Blends
Vocalizations… • Non-specific vowel-like sounds • These permit independent control of voice patterns and tongue movement • Flexible voice patterns
Steps 1-4 Consonants… • Step 1 consonant sounds are the most visible on the lips (except /h/). Step 1 consonant sounds b, p, f, v, th, h, w, m, and final p/b teach manner of articulation. These visible consonants lay the foundation for correct consonant articulation and act as building blocks for later developing sounds. • Steps 2 and 3 consonants teach place of articulation. Most Step 2 sounds are dental, (d/t, s/z, sh/zh, y, n, and final t/d). They are important in spoken language because many of these consonants, which appear frequently in English, are used in many morphological markers, such as verb endings and plurals. Step 3 consonants include back sounds that are difficult to see (g/k, ng, final k/g) and sounds that are more difficult to pronounce (/r/ and /ch/). • Step 4 consonants concentrate on teaching voiced/voiceless distinctions.
Progression of Sounds for Children with Hearing Loss Based on the Ling Method Suprasegmental Patterns Duration Intensity Pitch Initial Consonant Blends Final Consonant Blends * cochlear implant users may have more difficulty with