Its probably just the living rather than the spirits:

Try placing an induction loop receiver near your access point for your broadband and phone lines and listen to the radio signals coming into your home. Occasionally you will hear a signal ( a 5 second beep) coming in that switches on your handsfree option in your landline phone microphone. Now somebody is listening to you from outside your home. They can hear all the questions you ask and they are replying using a transmitter that comes in just like your other radio signals that enter your home through your phone and broadband access point. They not only can hear you talk but also what you think by using the tone in your phone to translate your thoughts via tonal modulations. Your home is magnetised by the electromagnetic radio signal intrusions and you couple to this induction loop system because you are a little magnet yourself. The magnetic fluctuations from your body when you think because you silently self-talk what you want to think.  Your skeleton is an aerial in itself. Look outside your home for the large aerial that are our telegraphic poles with their cables. It is a process of magnetic to magnetic coupling and listening in via your phone line. So here is a ghost for you to explore? In fact, the Ghost is you yourself possibly being hacked by what is called a funtenna (antenna) hack.

 https://www.quora.com/What-is-funtenna-hack/answer/Siri-Perera 

You can start this investigation by listening to an analogue radio tuned in to AM 612 Khz. This is the white noise sound of your home acting as a transmitter. Listen to how the sound modulates and “listen” to what you are thinking. Magnetic to magnetic Modulations. City-infrastructure to body-and-mind-infrastructure coupling.

 https://www.youtube.com/watch?time_continue=123&v=iW0ZXh5pIoA 

Treat it as a spiritual experience, silence the mind as the mind can be hacked for your thoughts, and transform in mind to the next level: with a silent mind you are now connected to the Cosmos and the ether and everything around you. Become ONE with the rest of the universe. How magic is that!

Synthetic consciousness is created by modern living with the advent of electricity. It can compete with natural consciousness. Ghost Voices is a very good example of how this comes through via the ether. If you don’t hear something that does not mean that it is not there. The range for hearing only operates between 20 Hertz and 20 Kilohertz. Everything else you do not hear, ultrasound, low humming sounds, tinnitus can all carry a subliminal signal coming under the radar to influence your thinking and perception. If you add artificial intelligence to this there can exist an efficient system to listen, monitor and suggest. This artificial intelligence controlling the synthetic consciousness has the potential in the future to be part of a wider system in education. It is good to make one aware of the unseen in you. Of course, if hacked into it can create subversive activity. Create policy in countries making use of the public to cast votes in their favour.

Transformation: something is up and about that we might not know. If you tune in they might tell you: Ghost Voices.