The APF-D Processor (Audio Playback Filter) is a real time recorder that operates continuously during your ghost or spirit box session that allows you to analyze the session by:

* Display the audio spectrum
* Pause and resume your Spirit Box session without losing any session and response data.
* Rewind your responses using the Playback feature in 10 second Intervals. You can rewind as far back as you'd like.
* Amplify audio
* Listen to responses slower using the adjustable speed control to make deciphering easier. If you hear something, you can rewind the response, and then slowly decrease the speed in 5% increments until you can hear the response more clearly.
* Our Adjustable Noise Filter (ANC) removes as much or as little noise as you want from the sweep session.
* Adjustable high pass filter will allow only higher frequencies to pass through.  It elevates the responses that sound muffled or have too much base.
* Provides a real time Audio spectrum of sounds and voice artifacts.
* Comes with a Bluetooth Transmitter and Receiver to connect your spirit box or other device to the APF
* Has a Built-In Speaker or can be used with an external speaker.
* Designed to to be used with any Spirit Box or Audio Recording device with 3.5mm audio output that will allow the user to:
 
The APF-D processor is more of an analytical tool that is used with your spirit or ghost box's frequency sweep modes and other recording devices. The APF is a real time recorder that operates continuously during your session. Even when you "pause" your session sweep data is being accumulated and ready for user analysis with the push of a button. It can operate efficiently for up to four hours using the supplied (rechargeable) 9Vdc battery.
 
VIDEO General Set-up and Use: https://youtu.be/m7SYxuoiqLg
 
VIDEO Response Examples Using P-SB7T: https://youtu.be/PsafPtqnUmk
 
VIDEO Spirit Say: “A Lot of Words Coming Out” Then “It’s Unusual”:  https://youtu.be/wf9yIC3s78s