plantcityparanormal.myfastforum.org

FloridaPreacher · Joined: 17 Apr 2008 Posts: 3 Location: Bradenton, Fl

I have a Digital Voice Recorder and I also have one that uses the mini-cassettes. I hate using the digital because half the time I can not figure out how to use the darn thing, but anyway I have read that they advise not using the mini-cassettes, now why is that?

_________________
Pastor Garry Smith
Staff Clergy/Investigator

admin · Posted: Thu Apr 17, 2008 6:22 pm Post subject:

Actually , I am planning on purchasing a few that use mini cassettes , as well as another digital.
What some people complain about with the micro cassette version is that ,since they are mechanical, they produce more background noise, which in turn corrupts the recording.
I,on the other hand , like the micro cassette models , and when I get mine , I will also invest in a external stereo microphone(which I also use on my digital machine), thus eliminating the built in mic, thus eleminating the background noise from the internal mechanisms of the machine !
Then you have the added convienince of having a PERMANENT record of your evidence you have accumulated(Always use new tapes for each investigation ! ) , and wont loose it if your computer happens to crash...like mine did Crying or Very sad

, and it also provides tangable evidence and verification of any EVP`s you may have caught on tape.
_________________
I chase Dead People

daeskew53 · Joined: 17 Apr 2008 Posts: 42 Location: Riverview

I use both....you can get great EVP"S on the micro-casettes. They can be costly after a while though. The digital you can get tons of hours and delete and reuse. Why they say not to use the mirco's...I don't know but I'm sure you'll get opinionated views on both. I would suggest you use both at investigations and then you'll be able to decide which YOU prefer to use. debbie

zoesgarden · Joined: 17 Apr 2008 Posts: 3

The other thing about digital is the flexibility of the recording. Imbed it on a website. Share it with others. Tapes may be permanant but they end up piling up in a drawer to eventually become corrupted. Tapes don't last forever either. Even if your computer crashes, if you post your EVP on a website, it should remain there till someone takes it off or the website goes belly up. I'm one that often doesn't "hear" what others hear. You have to almost tell me what I'm listening for unless it's VERY clear. So the less background interference the better.

daeskew53 · Joined: 17 Apr 2008 Posts: 42 Location: Riverview

FROM ANNA MARIE....... Analog or Digital Recorders?

There has been an argument for some time as to which is better,
digital voice recorders or magnetic tape recorders. I am asked this
question almost everywhere I go. While both work well for EVP work,
with some operational modifications, tape machines give you a clear
edge in the field. Let me explain why.
The basic idea involves an electromagnet (the recording head) that
applies a magnetic flux (frequency) to the oxide on the tape. The
oxide permanently "remembers" the flux it sees. A tape recorder's
record head is a very small, circular electromagnet with a small gap
in it. This electromagnet is tiny, roughly the size of a flea (even
smaller in pocket recorders). The electromagnet consists of an iron
core wrapped with wire. Bias is a special signal that is applied
during recording. The first tape recorders simply applied the raw
audio signal to the electromagnet in the head. This works, but
produces a lot of distortion on low-frequency sounds. A bias signal
is a 100-kilohertz signal that is added to the audio signal. The bias
moves the signal being recorded up into the "linear portion" of the
tape's magnetization curve. This movement means that the tape
reproduces the sound recorded on it more faithfully. It acts much
like a carrier frequency does in radio. During recording, the audio
signal is sent through the coil of wire to create a specific magnetic
field in the core. At the gap, magnetic flux forms a fringe pattern
to bridge the gap (shown in red), and this flux is what magnetizes
the oxide on the tape. During playback, the motion of the tape pulls
a varying magnetic field across the gap. This creates a varying
magnetic field in the core and therefore a signal in the coil.
Since EVPs are electromagnetic in nature, you will get your highest
class of EVP using this type of device.
In digital recording, the analog signal of a sound is converted into
a stream of discrete numbers, representing the changes in air
pressure through time; thus making an abstract template for the
original sound. The analog signal is transmitted from the input
device to an analog to digital converter (ADC). The ADC converts this
signal to a series of binary numbers. The count of the numbers
produced per second is called the sample rate. A bundle of wires
transmits these numbers into storage, usually a flash memory chip. So
people ask "how you can get an EVP at all with a digital recorder?"
The flash memory is electromagnetic in nature. Also, picking the
right microphone is very important.
No matter what type of recorder you use, never use the built in
microphone. Built in Microphones are electret type microphones. An
Electret Microphone is part dynamic and part electrostatic or
condenser in nature. In a capacitor microphone, also known as a
condenser microphone, the diaphragm acts as one plate of a capacitor,
and the vibrations produce changes in the distance between the
plates. Since the plates are biased with a fixed charge (Q), the
voltage maintained across the capacitor plates changes with the
vibrations in the air, according to the capacitance equation: Q=C x
V, where Q = charge in coulombs, C = capacitance in farads and V =
potential difference in volts. The capacitance of the plates is
inversely proportional to the distance between them for a parallel-
plate capacitor. Capacitor microphones can be expensive and require a
power supply, commonly provided from microphone inputs as phantom
power, but give a high-quality sound signal and are now the preferred
choice in laboratory and studio recording applications.

zoesgarden · Joined: 17 Apr 2008 Posts: 3

Okay, now you're making my head hurt..... Rolling Eyes

admin · Posted: Fri Apr 18, 2008 2:46 am Post subject:

Yeah...What she said ^^^^^ I`ll stick to ..because they are noisey Wink

_________________
I chase Dead People

FloridaPreacher · Joined: 17 Apr 2008 Posts: 3 Location: Bradenton, Fl

Thanks All, I will keep both

_________________
Pastor Garry Smith
Staff Clergy/Investigator