The method of cultivating the organ of the ear to perfect penetration

I wonder how this relates to Kenneth's "Ship's in the Harbour" technique?

'How then can one develop true Insight, Perfect Wisdom, into the ultimate reality of life? If the human attempt to be an impartial observer of natural processes is not the appropriate method, what would be the right method? It is clear that the right method would need to result in the cultivation and integration of the transcendental state of Absolute Wakefulness, the state of Nirvana. The BuddhistShurangama Sutra offers the following deep insight:

"Through which sense organ should I cultivate? You ask. Don't be nervous. It is the very organ of the ear which Gwan Yin Bodhisattva used that is best for you.

Gwan Yin Bodhisattva perfected his cultivation through the organ of the ear, and Ananda will follow him in cultivating the same method. The Buddhas and Bodhisattvas of former times have left us such a wonderful Dharma-door that we should also follow the method of cultivating the organ of the ear to perfect penetration. This is the easiest method."

But, how should one be with a sound? What is the right method? The Shurangama Sutra offers further explanation in the following verses:

"Ananda, and everyone in the great assembly,
Turn around your mechanism for hearing.
Return the hearing to hear your own nature
The nature will become the supreme Way.
That is what perfect penetration really means.
That is the gateway entered by Buddhas as many as dust motes.
That is the one path leading to Nirvana.
Tathagatas of the past perfected this method.
Bodhisattvas now merge with this total brightness.
People of the future who study and practice
Will also rely on this Dharma." ~ Shurangama Sutra'

www.elephantjournal.com/2011/07/the-budd...dr-evan-finkelstein/

This might be informative on that topic:

www.abhayagiri.org/journals/entry/614/

I recalled reading it some time ago and had to Google of fit to find it.