The Sound Cosmos Inquiry – Part 1: Philosophical Foundations by Devrishi

“The Sound Cosmos Inquiry – Part 1: Philosophical Foundations” is the first installment in a multidisciplinary series by Indian philosopher and spiritual researcher Devrishi. This paper lays the metaphysical foundation of Sonic Philosophy—an integrative framework exploring the connection between sound, consciousness, and healing. Drawing from Indian philosophical systems such as Nāda Brahma, Śabda Brahman, and the four stages of sound (parā, paśyantī, madhyamā, vaikharī), the paper bridges Vedic insights with emerging paradigms in neuroscience, cymatics, and quantum field theory. It positions sound not as an aesthetic or symbolic medium, but as a vibrational principle of consciousness. This work has been developed under the Sanatan Wisdom Foundation and Nada Yoga Research Institute (NYRI), with the broader aim of establishing sound-based methodologies for mental and emotional wellness. The document serves both as a philosophical exposition and as a research prelude to future empirical studies led by NYRI, examining the physiological impact of mantras using EEG and HRV techniques. Author: Devrishi (Rishikesh Pandey)Affiliations: Sanatan Wisdom Foundation | Nada Yoga Research Institute (NYRI)Website: https://devrishi.orgORCID: 0009-0001-5134-6752