The nine śrutis group has been associated with the vamsa (flute) because the production of svaras can be clearly described there in terms of opening, shaking, and half-opening holes
"This group of nine śrutis has been associated with the vamsa (flute) because the production of the svaras of four, three and two śrutis has been clearly described there in terms of 'opening' the hole (removing the finger), shaking the finger and half-opening of the hole"
VIMARŚA
<sup>159</sup>
20-23. Utkarşa and apakarşa lit. mean heightening and lowering respectively.
They are used singly and also in a pair in NS. Our text uses them in a pair in the
present passage and also in Anu. 36 (while explaining grāma). Again in Anu. 8
(while explaining the process of sāraṇā) 'apakarṣa' and 'apakṛṣṭa' (adjective
for Viņā ) is used. Mārdava and āyatatva are used in a pair in the present
passage; but 'ayatatva' is replaced with 'viprakarşa' in Anu. 50
( while
explaining tāna-kriyā ) and mārdava is explained there as loosening ( of the
string).
Word
Reference
Context
Apakṛṣṭa (Pañcama)
NS XXVIII
p. 20
Madhyamagrāma
Utkarşa-apakarşa
p. 20
Measure of śruti
.
Apakṛṣṭa (Vīṇā)
p. <sup>20</sup>
Sāraņā
M
Utkarşa ( of gandhara )
p. 26
Mūrchanā-grāma
Mărdava (of dhaivata)
p. <sup>26</sup>
Utkṛṣṭa ( niṣāda )
p. <sup>32</sup>
Svara-sādhāraņa
(gāndhāra)
p. <sup>32</sup>
<sup>99</sup>
Mārdava-āyatatva
p. 20
Measure of sruti
×
Ayatatva
XXVIX
p. 37
Sruti-jāti
Mṛdutva
p. 37
Viprakarşa-mārdava
XXVIII
p. <sup>27</sup>
Tāna-kriyā
Viprakarşa-pidana
Abhi. Bhā.
( stretching of the
on above
string)
Mārdava =
śithilikarana
(loosening of the string).
It is an acoustic fact that stretching or tightening of the string results in
higher pitch and loosening of the string results in the reverse viz. lower pitch.
The words utkarşa and apakarşa stand for these two resultant changes in pitch
respectively. 'Ayatatva' and 'mārdava' are basically concerned with the process of
tightening and loosening of the string respectively. Both these pairs are closely
related since they represent the effect and cause. Both the pairs are mentioned
together in BrD and NS in the context of sāraņā (the process of verification of
śruti). It is notable that although utkarşa and āyatatva and apakarşa and
mārdava are pairs of mutually related terms, their order is reversed both in NŠ
and BrD where mārdava-āyatatva is said to be an alternative of utkarşa-apakarşa;
the proper order would have been apakarşa-utkarşa. Abhinavagupta
commenting on this passage of NS explains the mutual relativity of the
constituents of both the pairs. When there are two viņās, if one string on one
viņā is tightened, this action has two effects viz. higher pitch on that viņā and
relatively lower pitch on the corresponding string of the other viņā without any
change of tension in that string. Hence ayatatva produces both utkarşa and
apakarşa. Similarly, if one string is loosened on one viņā, this action has two