Real Time EVP ITC Instrument Designed Exclusively For The Professional Paranormal Community
Proper Recording Tips & Technique
When using the RT-EVP, there are several factors that can influence the recording quality of your EVP session. Here are some suggestions that will help you to use your RT-EVP effectively while achieving optimum results.
. This is the only microphone type that we could find that could be modified to detect the lower level (15Hz) frequencies. It also provides very high sensitivity to subtle Sound Pressure Level (SPL) changes in and around the environment. The RT-EVP recording sensitivity level can be adjusted up to 81.5dB during the Simultaneous Playback. So, if you increase the Recording sensitivity beyond 55dB, the device can actually pick up some unwanted sounds, like the Audio Playback inside of your ear canal. There are several ways to resolve this matter. Here are some suggestions if using the RT-EVP's Recording sensitivity above 55dB.
1. Hold the RT-EVP device extended away from you, and project your voice in a different direction away from the RT-EVP microphone.
2. Talk more quietly and determine what voice level is best for you.
3. Always use proper fitting (in ear) earbuds. Do not use earphone or a headset that rest on the surface of your ear.
4. If you want to increase the Recording sensitivity above 65dB, there are a few things you can do. Use an audio extension cable and place the RT several feet away from you. Or, use the earbuds combined with a
. These are readily available at your local Home Depot or Hardware store for $10-$15. This combination is the most effective, and blocks 100% of the echo regardless of how loud you speak, or how high the dB level setting is.
"LIVE" Audio Remote Monitoring
If you would like to perform "LIVE" Audio EVP sessions consisting of an external speaker connected with your RT-EVP, this can be done. But there are some precautions that you must be aware of when doing so. The biggest obstacle to overcome is FEEDBACK. Feedback will occur when the RT microphone picks up the amplified sound coming out of a speaker. When you speak into the RT-EVP Microphone, the RT device amplifies your voice and sends it out through the remote speakers. While this (in theory) may be ideal for everyone in the group to hear the session, the sound from the speakers will unfortunately also be picked up by the RT's microphone. That sound is made even louder and sent back out through speakers where it is picked up by the microphone again, and again and so on. It is also referred to as a "looped signal".
Here are a few suggestions on how to avoid this problem.
at a minimum distance of 10' facing away from the RT-EVP microphone. This will help eliminate the speaker output pattern from being detected by the RT's Omni-Directional internal microphone. 2. Once the RT-EVP and remote speaker are in position, have someone speak into the RT-EVP Microphone with the Recording sensitivity starting at 50dB. Slowly raise the Recording level in 5dB increments until you get the system operating at a good volume level for everyone to hear. If you are using a Boom Box or other Amplified Audio speaker system with separate volume adjustment like I do, this can also be "tweaked" to get the desired results
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If you start hearing feedback reduce the volume level until it stops. If it is still loud enough you are all set to enjoy your session. If not, try to move the loudspeakers even further away from the microphone. Under no circumstances should the loudspeakers be behind and facing the microphone.
Just remember, the louder you want the volume, the more distance you must have between the RT-EVP and you Speaker system
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3. Avoid aiming the speakers directly at reflective surfaces such as walls, ceilings.
Room Acoustics can affect the results.
Recently, I created a handheld "Push To Listen" amplified speaker box for Zak on GA. In this scenario, you hold the RT-EVP in one hand and the speaker interface in the other. With the RT-EVP set to a 1 second (almost instant) playback, you can ask your question and then push a soft activated momentary pushbutton which activates the built- in internal / amplified speakers. The intent of using this technique is that you only hear if there is a Spirit Response...assuming that it is audible without having to use editing software. This approach still records your questions, but completely eliminates your voice from being played back through the speakers
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This allows the RT-EVP microphone and speaker to be held by the user within a few feet of each other without feedback if the recording sensitivity is set at a reasonable dB level, and you are quiet as you listen. If someone speaks during the "listening" sequence, you simply release the button and wait 1-2 seconds to reset and erase the feedback
Frequency Sweep Audio
When using the RT-EVP Frequency Sweep Feature
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it is important to understand the basic Playback operation. We discussed Feedback when using remote speakers, and how to prevent mutual interference during your EVP sessions. The same operating principal described in points 1-3 above must also be applied when doing your Frequency Sweep sessions while using a remote
If you have the RT microphone "OFF", you can perform your Sweep session with the speaker as close to the RT-EVP as you want. Please note that the RT-EVP internal 25mm speaker is only used for playback of your recorded files. It can not be used as an audio speaker when conducting a session.