Review #7 (Microphone)

The Music Telegraph | Text 2019/03/21 [13:48]

Review #7 (Microphone)

The Music Telegraph| 입력 : 2019/03/21 [13:48]

▲ Microphone Off-Axis Rejection at 180°



 

Review #7 (Microphone)

 

 

14. Dynamic Mic | Condenser Mic | Ribbon Mic?

 

*Instruments are each would be best used by:

1) Dynamic Mic —> Kick drum

2) Condenser Mic —> Vocal, Piano

3) Ribbon Mic —> Vocal, Acoustic instruments (Guitar, etc.)

 

 

1) Dynamic Mic

- Common in use in stage use, where physical strength is very important

- Also, this is reasonably insensitive to environmental factors, so can be used in extensive use and outdoor use

- Since moving-coil technology is fairly refined and capable of very good sonic characteristics, dynamic microphones are also widely used in recording studio

- Rapidly fall off above 10 kHz and gradually fall off below 100 Hz

 

 

2) Condenser Mic

- Since the diaphragm of a condenser Mic is not loaded down with the mass of coil, it can respond very quickly and accurately to an incident sound

- Thus, this has generally excellent sonic characteristics, so are used widely in recording studios (for recording)

- Being sensitive to physical shocks and environmental factors (humidity), so it is less used in sound reinforcement

- Slightly bright/brittle, peak: 8k ~ 10 kHz

 

 

3) Ribbon Mic

- Usually have excellent sonic characteristics with great warmth and gentle high frequency response

- They also have excellent transient response and very low self-noise

- So, vocal and acoustic instruments are good for use

- Warm, peak: presence and 200 Hz (low freq.)

 

 

 

15. What is 'Off-axis rejection'? (see the Top picture)

- In cardioid Mic, 

: Signals arriving at the front (0°, on-axis) of the diaphragm will produce a full output level

: Signals arriving at the rear of the diaphragm (180°, off-axis) will cancel each other out, resulting in a greatly reduced output

 

 

 

[side trip]

- Mic shape is Not a trade mark (™). The shape of microphone, like airplane wings, is a structure in common sense. 

- Neumann U87: Studio reference microphone in general.

 

 

 

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