Nada

Nada (नाद) means “sound” or “vibration.” In Indian philosophy and Tantric practice, it refers to the primordial cosmic vibration that underlies all creation — the “sound” from which the universe emerges.

Overview

Nada is classified into two types: ahata-nada (struck sound — the sound produced by external causes, like a drum or voice) and anahata-nada (unstruck sound — the inner, spiritual sound heard in deep meditation). The Nada Yoga tradition holds that all manifest reality is a vibration of Brahman — the Absolute expressing itself as sound.

Philosophical Context

Nada is central to several Indian traditions. In the Sama Veda, the recitation of sacred syllables is understood as participation in the cosmic vibration. In Tantric practice, mantra (sacred formula) is a form of nada that aligns the practitioner with the cosmic vibration. The Yoga Kundalini Upanishad states: “In the beginning there was nada, and from nada arose creation.” In the *Shri Vidya* tradition, the Panchadashi mantra is a sequence of nada that encodes the entire cosmic process.

Interpretations

The Nada Yoga system (described in Nada Bindu Upanishad and Yoga Kundalini Upanishad) teaches that the practitioner should begin with external sound (ahata) and gradually turn inward to hear the anahata-nada — the “unstruck” sound that is the vibratory body of Brahman. The Shabda Brahman (Word-Absolute) concept in the Mantra Shastra equates nada with the creative power of the Absolute. In music theory, nada is the basis of the Indian concept of shruti (the subtle, underlying pitch of all music).

Verification Notes

• Nada Bindu Upanishad and Yoga Kundalini Upanishad discuss nada.
• Shabda Brahman concept in Mantra Shastra.
• Audited against Wikipedia and Tantric studies references (September 2026).