In a seated position with the spine straight.

With eyes closed chant a mantra and after the mantra is chanted open yourself up to the feeling that it creates.

Every sound would give rise to a feeling and every sound rises up from a state of soundlessness.

This feeling that s generated after the sound becomes the doorway the key to enter this state of soundlessness.

With the inhaling breath chant the mantra mentally and while exhaling breath begin to become open to the feeling that is being created.

Keep on practicing this with every inhaling and exhaling breath.