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The science and philosophy of OM-AUM
31/07/2020, 09:43
By Ainhoa Acosta
Ainhoa has a Masters degree in Audio Production and has worked as a Promo Producer and
Creative Executive for the World Service and BBC News. She teaches the children’s yoga class, a
beginners’ class and an introductory course at Maida Vale.
When going to a yoga class for the very first time, some students may be surprised that we start the
class chanting ‘Om’ three times. Some feel at ease straight away, while others might feel selfconscious or wonder why we chant a word in Sanskrit without knowing what it means. Sometimes
that first Om is strained, not harmonious, only to become a smooth and pleasant sound by the third
Often there is the question of whether it has a religious connotation.
Let us look at this more closely.
The philosophy of Om
In yoga philosophy, Om is considered a sacred syllable. “Like the Latin word ‘Omne’, the Sanskrit
word ‘Om’ means ‘all’ and conveys concepts of ‘Omniscience’, ‘Omnipresence’ and ‘Omnipotence’”
(BKS Iyengar, ‘Light on Yoga’, p. 445). Om is a sacred ‘mantra’. It is considered a universal sound, the
seed of all words without reference to any specific religion or god. According to the Big Bang theory,
Om is the cosmic sound that initiated the creation of the universe.
This sacred syllable is not just one sound, it is actually three. The ‘Pranava’ (power) mantra
comprises three syllables: ‘a’, ‘u’, ’m’, indicating the continuity of past, present and future. The Aum
sound encompasses the masculine, feminine and neutral principles. It also addresses speech (‘vak’),
mind (‘manas’) and breath (‘prana’) and alludes to the famous trinity of Indian cosmology, the
creator (Brahma), the maintainer (Vishnu) and the destroyer (Shiva). By chanting Aum at the
beginning of class or practice, the divinity within each of us is addressed, invited and called in. When
we perceive the sound of our own voice, we notice our own presence. Through sound, an invisible
yet physical expression, we are closer to perceiving our true self and our true nature. We are never
separate from sound; even if we can’t speak or hear we feel its physical vibration throughout our
At the point of chanting Aum, there is no thought, no separation. Regular practice enhances a sense
of centeredness. It is also said that while chanting Aum, the syllable is the target and our attention
becomes focused on one point (‘Ekagrata’). Like holding the bow and using the Self as the arrow,
chanting gives us a clear sense of direction and focus. It is the beginning of the inward journey and
thus the beginning of the class and of practice.
The science behind Aum
The effects of chanting Aum at the beginning of each class go beyond the philosophical realm. It is
well recognised that sound is a powerful tool for healing and can have profound effects. The ancient
yogis knew and practised many methods that are now becoming accepted by the scientific
community. One of these is the chanting of mantras.
Mantras are syllables that exert an influence or effect through sound vibrations that resonate on
specific parts of the body. Different syllables vibrate at different sound frequencies and so they will
resonate with certain organs and parts of the body. The human hearing range is 20Hz to 20KHz. Aum
vibrates at 432 Hz, which is quite low within our hearing range. This means that the sound wave is
longer and its frequency of vibration slower than a high-pitch sound at, let’s say, 15KHz. The physical
result of this is that these sound waves will affect bigger surface areas.
At a physical level, the Aum syllable addresses the whole of the human sound instrument: we open
the mouth (‘a’), move the lips closer to each other (‘u’) and then close the mouth (‘m’). This activates
the larynx fully. ‘A’ resonates in the stomach and chest, ‘u’ in the throat and chest and ‘m’ in the
nasal cavity, skull and brain. By chanting Aum we move the energy from the abdomen up to the
brain. Those of us who chant Aum daily before our practice, feel how it helps us to calm our mind
and clear our thoughts.
Specific scientific research
Modern technology, such as sound spectrum analysis and brain imaging technology, has made it
possible to analyse the structure and quality of soundwaves produced by chanting, as well as the
physiological responses induced by the repetition of the Aum sound. Separate research studies were
carried out on volunteers who have never chanted before. The recordings and the sound waves
were analysed before and after some weeks of chanting Aum on a regular basis. The soundwaves of
those who had never done any chanting showed irregular patterns, indicative of unsteadiness of
breath and more restless minds. By contrast, the soundwaves recorded after a period of regular
chanting were smooth, evenly spaced and harmonic, a clear indication of more regular
breathing. There was an increased connection between the breath and mind, which resulted in an
improved sense of calmness.1 In another experiment, functional Magnetic Resonance Imaging scans
(f-MRI scans) were used to analyse the brain and measure the response of the nervous system
during and after the Aum mantra chanting. It’s findings showed that the regular chanting of Aum can
be effective in the treatment of depression & epilepsy.2 Other studies have revealed that regular
Aum chanting can help lower high blood pressure.3 Other effects of chanting Aum regularly are
improved concentration and a reduction in stress levels.4
Modern technology and science confirm what ancient yogis knew about the healing power of Aum.
So much in just one sound.
OM sound from NASA:
The Power of OM:
Sound file of what the big bang AUM might have sounded like:
The sound of the big bang:
1 Gurjar, A. A., and Ladhake, S. A., ‘Time-Frequency Analysis of Chanting Sanskrit Divine Sound “OM”
Mantra’, IJCSNS International Journal of Computer Science and Network Security, Vol. 8, August
2008, pp. 170-175; http://paper.ijcsns.org/07_book/200808/20080825.pdf
2 Kalyani, B. G., Venkatasubramanian, G., Arasappa, R., Rao, N. P., Kalmady, S. V., Behere, R. V., Rao,
H., Vasudev, M. K., and Gangadhar, B. N., ‘Neurohemodynamic correlates of ‘OM’ chanting: A pilot
functional magnetic resonance imaging study’, International Journal of Yoga, January 2011, 4 (1), pp.
3-6; https://www.ncbi.nlm.nih.gov/pubmed/21654968
3 http://www.dailymail.co.uk/health/article-1258234/Chants-fine-thing-It-sound-daft-doctorsbelieve-meditation-really-lower-blood-pressure.html
4 Gurjar A. A., Ladhake, S. A., Thakare, A. P., ‘Analysis Of Acoustic of “OM” Chant To Study It’s Effect
on Nervous System’, IJCSNS International Journal of Computer Science and Network Security, Vol. 9
No.1, January 2009, pp. 363-367, p. 366; http://paper.ijcsns.org/07_book/200901/20090151.pdf
This article is taken from Dipika, the Iyengar Yoga Maida Vale Journal, 2020. If referencing this
article, please credit as appropriate.