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what is the difference among the differential head set mic, mono mic and stereo mic..

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Member level 3
Nov 30, 2009
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Hi All,

What is the difference among the differential head set mic, mono mic and Stereo mic.


---------- Post added at 18:48 ---------- Previous post was at 18:44 ----------

I know that may be the simple question but I am facing audio recording problem. so please help me.

Mono and Stereo are two classifications of reproduced sound. Mono is the term used to describe sound that is only from one channel while stereo uses 2 or more channels to provide an experience much like being in the same room where the sound was created. Listening to a stereo sound allows you to distinguish which sound is coming from which direction which is very similar to being in the same room as the sound was created. This provides listeners with a much more natural experience compared to where the sound comes from a single direction.

The most prominent use of stereo sound is in music where multiple sources of sound are present. When you are listening to a band play and you have a sharp ear, you can distinguish the sound made by each instrument. This is what stereo tries to replicate with the use of multiple channels and what mono is completely unable to do. This is why all radio stations that broadcasts music use stereo, using mono would simply result in inferior sound.

Mono is still widely used today in situations where stereo only takes up bandwidth and offers no advantages. A good example for this is in voice communications like in talk radio and telephone calls. In these cases, the only desired source of sound is the mouth of the speaker, utilizing two channels for this would only mean a greater bandwidth taken up which is counterproductive.

The equipment needed to record stereo sound is also a little bit more complicated and pricey compared to equipment for mono. Recording mono sound requires only a single microphone and the data it acquires is automatically stored in magnetic tape or converted to digital formats for storage. With stereo, you would need multiple microphones along with the equipment needed to splice the multiple channels together in order to create a single sound stream that a player can break apart into the original channels. This is why most hand-held sound recorders can only record sound in mono since stereo recording is not really needed for the applications they are used for.

1. Mono sound uses only a single channel while stereo sound uses two channels or more
2. Stereo sound gives you a more natural listening experience compared to mono
3. Stereo is essential for broadcasting and listening to music since Mono provides inadequate sound quality
4. Mono is used widely in talk radio and mobile communications since stereo doesn’t really provide any practical advantages in these situations
5. Recording in mono is less complicated compared to recording in stereo
6. Most hand-held voice recorders can only record in mono

what about the differential head set mic?

The Differoid microphone uses only one mic capsule which is open to sound
at two points: the front and rear of the diaphragm. The diaphragm is moved
by the difference in sound pressure between its front and rear sides —
hence the name “Differential.”

A differential microphone is a noise-cancelling because of mechanic construction

The differential microphone is useful in hearing aids, telecommunications equipment, information technology and military applications.

In rock bands
The microphone was also designed to reject sound behind the microphone,
for example, from a fl oor monitor speaker. Not only does this prevent
feedback, it also reduces the sonic coloration caused by monitor sound
leaking into the vocal microphone.



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Thanks KAK,

Any connection difference with respect to normal mic e.g. mono/stereo.

I drew a principal picture , what is the idea in differential microphone.
Connections are same for both .
Even pressure sensitive part ( mic. capsule ) can be same in differential and
conventional microphone.

View attachment Diff_Mic_01.pdf

It is associated with the amplifier. Mono mics, positive/plus mark to the input of your amplifier (usually at +) and the other one negative/minus mark straight to the ground. For the differential mic negative/minus mark is connected to the minus mark of your amplifier. For Stereo type its either (differential or mono) two mics intended for each channel (right or left).

thanks KAK and elex.


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