"We have launched a distinct tune which represents the brand. This is a part of a national campaign that was launched before Diwali," its marketing head Kartik Jain told PTI.
The 'sonic branding' is being included at all the touch-points, including ATMs and phone-banking application, where customers will hear the tune, he said.
The effort is part of a national marketing campaign stressing the digital banking, he said.
The campaign involves a spend of over Rs 30 crore, a senior official said.
Last fiscal, the bank had invested Rs 140 crore in advertising efforts.
