Short Answer 
Laminal sounds involve the articulation of consonants using the blade of the tongue, as seen in the sound ‘sh’ in “shin.” They contrast with apical sounds, which are articulated using the tip of the tongue, highlighting differences in tongue positioning and sound production.
Understanding Laminal Sounds
The term laminal refers to a type of speech sound where the blade of the tongue is used for articulation. This blade is the flat area just behind the tip of the tongue, crucial for producing certain consonant sounds. Laminal sounds are distinct because they utilize this part of the tongue in a specific way, differing from other sounds made using different tongue parts.
Example of a Laminal Sound
An excellent example of a laminal sound is the consonant ‘sh’ found in the word “shin.” To produce this sound, the blade of the tongue approaches the roof of the mouth, specifically targeting areas like the alveolar ridge or hard palate. This articulation allows for the characteristic sound of ‘sh’ and is essential in understanding how laminal sounds function.
Differences with Apical Sounds
Laminal sounds contrast with another category known as apical sounds, which are produced using the tip of the tongue. Understanding the difference between these two types of sounds can enhance clarity in speech. Key distinctions include:
- Laminal: Uses the blade of the tongue.
- Apical: Uses the tip of the tongue.
- Positioning: Laminal sounds often approach the alveolar ridge, while apical sounds might emphasize the tip more dramatically.