In articulatory phonetics, a consonant is a speech sound that is articulated with complete or partial closure of the vocal tract. a basic speech sound in which the breath is at least partly obstructed and which can be combined with a vowel to form a syllable.

1. CONSONANTS

2. CONSONANTS:
In articulatory phonetics, a consonant is
a speech sound that is articulated with
complete or partial closure of the vocal
tract.

3. ETYMOLOGY:
The word consonant comes from Latin
oblique stem cōnsonant-, from cōnsonāns
(littera) "sounding-together (letter)", a
calque of Greek σύμφωνον sýmphōnon
(plural sýmphōna).

4. FEATURES:
The manner of articulation is how air escapes from the vocal tract
when the consonant or approximant (vowel-like) sound is made.
The place of articulation is where in the vocal tract the obstruction
of the consonant occurs, and which speech organs are involved.
Places include bilabial (both lips), alveolar (tongue against the gum
ridge), and velar (tongue against soft palate).

5. FEATURES:
The voice onset time (VOT) indicates the timing of the
phonation.
The airstream mechanism is how the air moving through
the vocal tract is powered.
The length is how long the obstruction of a consonant
lasts.

7. ARTICULATORY ORGANS:

8. CONSONANTS CAN BE CLASSIFIED ON THE
BASIS OF
1. Airstream mechanism
2. State of glottis
3. The position of the soft palate
4. Points of articulation
5. The manner of articulation

9. PLACE OF ARTICULATION:
1.BILABIAL
2.DENTAL
3.LABIO DENTAL
4.ALVEOLAR
5.PALATO ALVEOLAR
6.VELAR
7.GLOTTAL
8.PALATAL
9 .PALATO ALVEOLAR

10. MANNER OF ARTICULATION:
1.STOPS/PLOSIVES
2.FRICATIVES
3.AFFRICATES
4.NASALS
5.SEMI-VOWELS
6.LATERAL
7.FRICTIONLESS CONTINUANT TRILLS/ROLLS