Bhagvad-Gita Chapter 1 Sloka 12

HARE KRISHNA!
SLOKA 1/12

TASYA SANJANAYAN HARSHAM KURU VRIDDHAH PITAMAHAH

SIMHA-NAADAM VINADYOCHCHAIH SANKHAM DADHMAU PRATAPVAN

MEANING

After this the great pitamah Bhishma the great valiant grand sire of Kuru dynasty the fighters of the fighters, blew his conch shell very loudly, making a sound like roar of a lion and this gives Duryodhana a great joy.

SLOKA 1/13

TATAH SHANKHASCH BHERYASHCH PANAVANKA-GOMUKHAH

SAHSA EVA ABHYAHANYANTA SA SABDAS TUMULO BHAVAT

MEANING

 Just after the blowing of conch shell drums, bugles, trumpets, and horns were all of a sudden sounded and the combined sound was tremendous.

Explanation

Piatamah understood the meaning of the heart of his grandson Duryodhana and out of his natural compassion for him he tried to cheer him by blowing his conch shell very loudly befitting hid position as a lion . Indirectly by the symbolic blowing of the conch-shell he informed his depressed grandson Duryodhana that he had no chance of victory as on the other side Lord Krishna is there But it is still his duty to fight and no pains would be spared ion that connection. And just after the blowing of conch shell the sounds of another conch shell, drums, bugles, trumpets, and horns started sounding suddenly and the combined sound was very frightening as well as joyous for the warriors. 

HARI BOL!