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A cardiod is a polar pattern that resembles a heart shape. "Cardi" is a Greek root word for 'heart'. That is why it is called a cardiod; because the pattern is heart-shaped.

The pattern is to demonstrate just how the mic itself hears.

Notice that its hearing is skewed twards the round side.
Much like a beam antenna works - BTW.

There are other kinds of mic patterns. Such as omni-directional (hears 360 degrees, just like an omni-directional vertical antenna does) and bi-directional (hears in two directions, just like a horizontal dipole does).

A dynamic mic is so-called because it uses a voice coil moving in a magnetic field (just like a very small, yet efficient speaker). A condenser mic uses a thin diaphragm charged with current (acting like a capacitor which is very sensetive to ultra slight changes in current). A ribbon mic uses a moving coil suspended close to a magnet (similar but not the same as a dynamic element does).

A microphone that has a flat, uncolored frequency response will not color the sound. All stock or power CB mics add a lot of color that you just won't hear from a quality mic. "Color" refers to a frequency response that is anything but flat. Odd peaks in a freq response will make for an unnatural sound. Getting a mic with a real natural sound is recommended. Especially condenser mics; this is why they are used so often and prized in the recording industry. A cardiod pattern is the preferred pattern for radio use. You wouldn't want to get ambient sound when transmitting; you only want your voice to be picked up and nothing else.

<blockquote data-quote="Robb" data-source="post: 341499" data-attributes="member: 8446">A cardiod is a polar pattern that resembles a heart shape.&nbsp; &quot;Cardi&quot; is a Greek root word for &#039;heart&#039;.&nbsp; That is why it is called a cardiod; because the pattern is heart-shaped.The pattern is to demonstrate just how the mic itself hears.<img src="http://upload.wikimedia.org/wikipedia/commons/thumb/5/5a/CardioidCircleEnvelope.svg/300px-CardioidCircleEnvelope.svg.png" alt="" class="fr-fic fr-dii fr-draggable " data-size="" style="" /> Notice that its hearing is skewed twards the round side.&nbsp; Much like a beam antenna works - BTW.There are other kinds of mic patterns.&nbsp; Such as omni-directional (hears 360 degrees, just like an omni-directional vertical antenna does) and bi-directional (hears in two directions, just like a horizontal dipole does).A dynamic mic is so-called because it uses a voice coil moving in a magnetic field (just like a very small, yet efficient speaker).&nbsp; A condenser mic uses a thin diaphragm charged with current (acting like a capacitor which is very sensetive to ultra slight changes in current).&nbsp; A ribbon mic uses a moving coil suspended close to a magnet (similar but not the same as a dynamic element does).A microphone that has a flat, uncolored frequency response will not color the sound.&nbsp; All stock or power CB mics add a lot of color that you just won&#039;t hear from a quality mic.&nbsp; &quot;Color&quot; refers to a frequency response that is anything but flat.&nbsp; Odd peaks in a freq response will make for an unnatural sound.&nbsp; Getting a mic with a real natural sound is recommended.&nbsp; Especially condenser mics; this is why they are used so often and prized in the recording industry.&nbsp; A cardiod pattern is the preferred pattern for radio use.&nbsp; You wouldn&#039;t want to get ambient sound when transmitting; you only want your voice to be picked up and nothing else.</blockquote>

[QUOTE="Robb, post: 341499, member: 8446"] A cardiod is a [I]polar pattern[/I] that resembles a heart shape. "Cardi" is a Greek root word for 'heart'. That is why it is called a cardiod; because the pattern is heart-shaped. The pattern is to demonstrate just how the mic itself hears. [IMG]http://upload.wikimedia.org/wikipedia/commons/thumb/5/5a/CardioidCircleEnvelope.svg/300px-CardioidCircleEnvelope.svg.png[/IMG] Notice that its hearing is skewed twards the round side. Much like a beam antenna works - BTW. There are other kinds of mic patterns. Such as [I]omni-directional[/I] (hears 360 degrees, just like an omni-directional vertical antenna does) and [I]bi-directional[/I] (hears in two directions, just like a horizontal dipole does). A [I]dynamic mic[/I] is so-called because it uses a voice coil moving in a magnetic field (just like a very small, yet efficient speaker). A [I]condenser mic[/I] uses a thin diaphragm charged with current (acting like a capacitor which is very sensetive to ultra slight changes in current). A [I]ribbon mic[/I] uses a moving coil suspended close to a magnet (similar but not the same as a dynamic element does). A microphone that has a [B][I]flat, uncolored frequency response[/I][/B] will not color the sound. All stock or power CB mics add a lot of color that you just won't hear from a quality mic. "Color" refers to a frequency response that is anything but flat. Odd peaks in a freq response will make for an unnatural sound. Getting a mic with a real natural sound is recommended. Especially condenser mics; this is why they are used so often and prized in the recording industry. A cardiod [I]pattern[/I] is the preferred pattern for radio use. You wouldn't want to get ambient sound when transmitting; you only want your voice to be picked up and nothing else. [/QUOTE]

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