E — heart resonance
Middle-axis vowel
E is rendered as a middle resonance around the heart centre, between the open A and the forward I. The placement is explicitly comparative because canonical yoga texts do not establish one universally binding E-to-organ correspondence.
Point 4 of 8 in Nāda Yoga — Sound-Body Resonance Map
Cross-tradition overlaps
No overlapping points are registered for this point.
Sources
Yoga Sūtras 1.27–29 (primary_canonical)
Supports praṇava contemplation, not this specific vowel-centre chart.
Guy L. Beck, Sonic Theology: Hinduism and Sacred Sound (scholarly_modern)
Documents variation in sacred-sound interpretation and mapping.