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What is the difference between the velocity operated and pressure operated microphones?
Know your microphones - what is the difference between pressure, pressure gradient, and velocity microphones?David Mellor | November 30, -0001Microphones work on the principle of pressure, pressure gradient, or velocity. If you don't know the difference, then you can't yet call yourself a sound engineer.This is something from the text books. Actually you don't have to know this to be a sound engineer - the proof of that is the 90% of sound engineers that don't know it! Yet a little theory never hurt anyone. And if you know how things work in theory, then you can apply them better in practice.There are two basic types of microphone - omnidirectional and figure-of-eight, which can be made in either dynamic or capacitor forms. Cardioid and hypercardioid microphones are hybrids, combining features of both the omni and figure-of-eight.The omnidirectional microphone works on the pressureprinciple. The diaphragm, which picks up sound vibrations in the air, is completely open at one side, but completely closed at the other.The sound vibration is either pushing the diaphragm against the fixed pressure of the air on the other side, or it is reducing the pressure on the front of the diaphragm allowing the pressure behind to push it out.One of the features of pressure in a gas is that it pushes equally in all directions. "Equally in all directions"? That makes the mic omnidirectional then.[For the sake of completeness, it should be mentioned that there is a tiny hole in the capsule to the rear of the diaphragm. This is so the microphone can compensate for long-term variations in air pressure. The hole is too small to affect its sound characteristics.]The figure-of-eight microphone on the other hand has both sides of the diaphragm fully open to the air. So it doesn't compare the incoming sound pressure with a fixed pressure on the other side of the diaphragm like the omnidirectional microphone. Instead it compares the pressure of the sound wave on one side with the pressure of that same sound wave after it has traveled through to the other side.Yes, it is a tiny difference in pressure, but strong enough to move the diaphragm.The difference in pressure between the front and the back of the diaphragm depends on the angle of incidence of the sound wave. In the extreme, if the sound arrives from the side of the diaphragm, then the pressure will be the same at the front and the rear, therefore the diaphragm will not move and there will be no output.Lastly, the velocity microphone... it doesn't exist! However you will see the term used frequently, particularly in relation to ribbon microphones.A velocity microphone, if it existed, would respond to the actual velocity of the air molecules striking the diaphragm.For this to happen though, the diaphragm would have to be so light that it could respond almost instantaneously, and so thin that there was no pressure difference between the two sides of the diaphragm. In practice, the diaphragm is too heavy to acquire the velocity of the air molecules and it has significant thickness.But a microphone that doesn't make it as a velocity mic, because its diaphragm is too heavy and thick, is still sensitive to pressure gradient. So in practice, these microphones are pressure gradient mics.So now you know it - the difference between pressure, pressure gradient and velocity microphones.
What is difference between dynamic and volumetric compressor?
what is difference between dynamic and volumatic compressor
What is the difference between MS and SS in WiMAX system?
what is difference between mild steel and stainless steel
What is difference between scope and superscope?
Both are same no difference Both are same no difference
What is the method to find the difference between two sets in Python?
To find the difference between two sets in Python, you can use the "-" operator or the difference() method.
What is the difference between a CB microphone and a regular microphone?
CB microphones are generally more powerful than regular microphones. CB microphones are designed to only pick up sound from a certain direction where regular microphones may pick up unwanted background noise.
Discus the different between omnidirectional and unidirectional waves?
An omni directional antenne receives or transmits signals from all directions as in 360 degrees. A directional antenne is aimed in a specific direction so that it may direct an outgoing signal to or receive a signal from a specific source.-by MD.ISRAFIL CSEWhat_is_the_difference_between_omni_directional_and_directional_antennas
What are the differences between hypercardioid and supercardioid microphones?
Hypercardioid and supercardioid microphones are both directional microphones that are designed to pick up sound primarily from the front while rejecting sound from the sides and rear. The main difference between them is their pickup patterns - hypercardioid microphones have a slightly wider pickup pattern with some sensitivity to the rear, while supercardioid microphones have a narrower pickup pattern with more rejection of sound from the rear.
How many different polar patterns are there for a microphone?
Microphones typically feature several polar patterns, with the most common being cardioid, omnidirectional, and bidirectional (or figure-eight). Additionally, some microphones offer variable patterns, allowing them to switch between multiple options, such as supercardioid and hypercardioid. Overall, there are several distinct polar patterns, each suited for different recording environments and applications.
What is the difference between an omnidirectional and an isotropic antenna?
An omnidirectional antenna can be practically implemented but an isotropic antenna cannot be implemented practically. An isotropic antenna resembles an ideal antenna with ideal values for all parameters.
What is the difference between unidirectional and bidirectional sequencing When would you use one method over the other?
Same, use bi if the gene products will be too big to resolve.
What are the difference Between bidirectional and unidirectional sampling gates?
Bidirectional sampling gates allow signals to pass in both directions, enabling two-way communication, while unidirectional sampling gates permit signal flow in only one direction. This fundamental difference affects their applications; bidirectional gates are often used in scenarios requiring feedback or two-channel systems, whereas unidirectional gates are typically employed in simpler, one-way transmission systems. Additionally, bidirectional gates may introduce more complexity in design and control compared to their unidirectional counterparts.
What is the difference between the velocity operated and pressure operated microphones?
Know your microphones - what is the difference between pressure, pressure gradient, and velocity microphones?David Mellor | November 30, -0001Microphones work on the principle of pressure, pressure gradient, or velocity. If you don't know the difference, then you can't yet call yourself a sound engineer.This is something from the text books. Actually you don't have to know this to be a sound engineer - the proof of that is the 90% of sound engineers that don't know it! Yet a little theory never hurt anyone. And if you know how things work in theory, then you can apply them better in practice.There are two basic types of microphone - omnidirectional and figure-of-eight, which can be made in either dynamic or capacitor forms. Cardioid and hypercardioid microphones are hybrids, combining features of both the omni and figure-of-eight.The omnidirectional microphone works on the pressureprinciple. The diaphragm, which picks up sound vibrations in the air, is completely open at one side, but completely closed at the other.The sound vibration is either pushing the diaphragm against the fixed pressure of the air on the other side, or it is reducing the pressure on the front of the diaphragm allowing the pressure behind to push it out.One of the features of pressure in a gas is that it pushes equally in all directions. "Equally in all directions"? That makes the mic omnidirectional then.[For the sake of completeness, it should be mentioned that there is a tiny hole in the capsule to the rear of the diaphragm. This is so the microphone can compensate for long-term variations in air pressure. The hole is too small to affect its sound characteristics.]The figure-of-eight microphone on the other hand has both sides of the diaphragm fully open to the air. So it doesn't compare the incoming sound pressure with a fixed pressure on the other side of the diaphragm like the omnidirectional microphone. Instead it compares the pressure of the sound wave on one side with the pressure of that same sound wave after it has traveled through to the other side.Yes, it is a tiny difference in pressure, but strong enough to move the diaphragm.The difference in pressure between the front and the back of the diaphragm depends on the angle of incidence of the sound wave. In the extreme, if the sound arrives from the side of the diaphragm, then the pressure will be the same at the front and the rear, therefore the diaphragm will not move and there will be no output.Lastly, the velocity microphone... it doesn't exist! However you will see the term used frequently, particularly in relation to ribbon microphones.A velocity microphone, if it existed, would respond to the actual velocity of the air molecules striking the diaphragm.For this to happen though, the diaphragm would have to be so light that it could respond almost instantaneously, and so thin that there was no pressure difference between the two sides of the diaphragm. In practice, the diaphragm is too heavy to acquire the velocity of the air molecules and it has significant thickness.But a microphone that doesn't make it as a velocity mic, because its diaphragm is too heavy and thick, is still sensitive to pressure gradient. So in practice, these microphones are pressure gradient mics.So now you know it - the difference between pressure, pressure gradient and velocity microphones.
Difference between isotropic antenna and omnidirectional antenna?
The isotropicantenna by definition has a radiation pattern that is a perfect sphere. The omni driectional antenna is characterized by a radiation pattern resembling a doughnut.
What are the differences between cardioid and supercardioid microphones for live vocals?
The main difference between cardioid and supercardioid microphones for live vocals is their pickup patterns. A cardioid microphone captures sound from the front and sides, while a supercardioid microphone has a narrower pickup pattern that focuses more on the front and reduces side noise. This makes supercardioid microphones better at isolating the vocalist's voice and reducing feedback on stage.
Difference between unidirectional and bidirectional TVs diode?
Unidirectional TVS: A TVS device with asymmetrical current versus voltage (I−V) properties. A unidirectional TVS is best suited for protecting circuit nodes whose signals are unidirectional or always above or below the reference voltage, usually ground. Bidirectional TVS: A TVS device with symmetrical I−V properties. A bidirectional TVS is best suited for protecting electrical nodes whose signals are bidirectional or can have voltage levels both above and below the reference voltage, usually ground
What brand of microphones do recording studios use?
Studios use a variety of microphones, and choose between them depending on the situation. Condensor microphones are widely used in recording studios, but diaphram and dynamic microphones are often used as well.
