structural_invariantR_c278_sruti enumeration śruti = mesure d'écart de pañcama par augmentation/diminution; nombre contesté (22, 66, ou infinśruti_count_classes_caste enumeration Svaras are classified by śruti count into three classes: 4-śruti (brāhmaņas), 3-śruti (kṣatriyas), 2śruti_imperceptible_parts definition Śrutis have imperceptible parts and do not appear as composed of parts.śruti_register_preservation structural A svara should be sounded in all three registers with the same śruti count as originally composed.śruti_shake_3sruti_rule_eroded transformation The traditional rule limiting shakes (kampita) to 3-śruti svaras appears abandoned in certain alaṅkāstructural