Jaathi: Jaathi denotes the number of matras within the laghu component of a tala, directly influencing the overall duration of a tala cycle.
Types of Jaathi:
Tisra Jaathi – 3 matras
Chaturasra Jaathi – 4 matras
Khanda Jaathi – 5 matras
Misra Jaathi – 7 matras
Sankeerna Jaathi – 9 matras
Gathi (Nadai): Gathi, also known as Nadai, signifies the subdivision of each beat within a tala, dictating the rhythmic flow and speed inside each beat.
Types of Gathi:
Tisra Gathi – 3 subdivisions per beat
Chaturasra Gathi – 4 subdivisions (standard)
Khanda Gathi – 5 subdivisions
Misra Gathi – 7 subdivisions
Sankeerna Gathi – 9 subdivisions
Distinction:
Jaathi alters the laghu's duration.
Gathi modifies the internal structure of beats.