I was wondering about this...
Avalokitesvara or Kuan Yin is said to have been enlightened through the use of the "sound without sound", then it suddenly occurred to me that he/she might be talking about the auditory charism.
For example, in this Mahayana sutra (though I understand its lack of validity as compared to the Pali canon):
Yes, it is indeed possible that Avalokitesvara (aka Kuan Yin) had been enlightened through the use of the "sound without sound," which surely seems to be talking about the auditory charism. Or, someone else who invoked Avalokitesvara (aka Kuan Yin), and wrote the sutra in question using pseudepigraphy.
"I now submit to the World Honoured One
That all Buddhas in this world appear
To teach the most appropriate method
This will surely be true of any genuinely enlightened person who would otherwise be called a 'Buddha.' This would include all of the major mystics, whom I quote from regularly: Siddhartha Gautama, Patanjali, Jesus, Rumi, Kabir, Teresa of Avila, John of the Cross, and so many others. We know a tree by its fruit, and that fruit is the superior fruit of attainment, called 'maha-phala' in the suttas.
Which consists in using pervasive sound.
The state of Samadhi can be Realized by means of hearing.
Yes, or course, but we must keep in mind that there are many charisms (aka superior fruit (maha-phala)).
Thus was Avalokiteśvara freed from suffering.
Being freed from suffering is one of the defining qualities of one who is enlightened.
O you who (have achieved) the sound profound,
The seer of sound, of sound the purifier,
Who, unfailing as the sound of ocean tides,
saves all beings in the world make them secure,
ensure their liberation and attainment of eternity.
In my experience, and in our case histories we find the charism of sound can sound at limes like the waves of the ocean, or flowing water, or a water fall, or rain.
Reverently I declare to the Tathagata what Avalokitesvara said:
When one dwells in quietude,
Rolls of drums from ten directions
Simultaneously are heard,
So hearing is complete and perfect,
Yes, in my experience, and the GWV case histories, the stilling of the mind is the gateway to the charisms, and the charismatic sound is one of those charisms, and at times it can also sound like roaring water falls, or Rolls of drums, which can seem to come from all directions, or from inside the center of our head.
Absence of sound means nothing heard,
Not hearing devoid of nature.
Absence of sound is not the end of hearing,
And sound when present is not its beginning.
The faculty of hearing, beyond creation
And annihilation, truly is permanent
Even when isolated thoughts in a dream arise,
Though the thinking process stops, hearing does not end,
For the faculty of hearing is beyond
All thought, beyond both mind and body.
Another way of saying this is the charismatic sensations are not the product of sensory stimulation.
And other sources someone recommended me that I plan to look through:
I find so much solace taking refuge in that unstruck sound charism, it brings joyful shivers.
Joyful shivers certainly can be a manifestation of the states of deep meditation, which are called, "jhana" in the suttas.
Perhaps the video and book might be a clear description of the sound charism, which is experienced in deep meditation (jhana). However, we have to keep in mind that "we know a tree by its fruit." So, does this video and book represent all of the charisms or just one? And are the authors known for recognizing the attainments of others? If not, then we have to question the validity of their movies and books; because, too often priests of the religions of the world are just interested in securing a money-stream for themselves, and could care less for the attainments of others. A truly enlightened one validates the attainments (maha-phala) of other contemplatives.
So, we must ask ourselves, "how has Ajahn Amaro, or the priest in the video, participated in the community of people who meditate deeply today?" For instance, "Have they become friends of the GWV?"