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Chinese Microphone - China Chinese Microphone Manufacturer
Chinese Microphone WebSite Link:
http://www.chinese-microphone.com/
China GuangZhou TianTuo Microphone Manufacturing Co., Ltd WebSite:
http://www.chinese-microphone.com/
Microphone Products are: Wireless Microphones, Conference Microphones,
Headset Microphones, and Lapel Microphones, interview microphones,
wired microphones, musical instrument microphones, drum microphones,
teaching microphones, recording microphones, computer's USB
microphones and microphone accessories and So on.
Microphone Products - Microphone, China Microphone Manufacturers,
China Microphone Suppliers, Made in China, Exporters, Factories -
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Wholesale Chinese Microphone

Chinese Microphone - China Chinese Microphone Manufacturer
Chinese Microphone WebSite Link:
http://www.chinese-microphone.com/
China GuangZhou TianTuo Microphone Manufacturing Co., Ltd WebSite:
http://www.chinese-microphone.com/
Microphone Products are: Wireless Microphones, Conference Microphones,
Headset Microphones, and Lapel Microphones, interview microphones,
wired microphones, musical instrument microphones, drum microphones,
teaching microphones, recording microphones, computer's USB
microphones and microphone accessories and So on.
Ribbon microphone - Wikipedia, the free encyclopedia Ribbon microphone
From Wikipedia, the free encyclopedia Jump to: navigation, search The
sensitivity pattern of a bidirectional microphone (red dot) viewed
from above.A ribbon microphone is a type of dynamic microphone that
uses a thin  
http://www.chinese-microphone.com/
 aluminum,duraluminum
or nanofilm ribbon placed between the poles of a magnet to generate
voltages by electromagnetic induction. Ribbon microphones are
typically bidirectional, meaning they pick up sounds equally well from
either side of the microphone.Contents1 Principle of operation2
History3 References4 External links[edit] Principle of operationIn the
dynamic microphone, the diaphragm is attached to a light movable coil
that generates a voltage as it moves back and forth between the poles
of a permanent magnet. In ribbon microphones, a current is induced at
right angles to both the ribbon velocity and magnetic field direction.
As the sound wave causes the ribbon to move, the induced current in
the ribbon is proportional to the particle velocity in the sound wave.
The voltage output of older ribbon microphones is typically quite low
compared to a dynamic moving coil microphone and a step-up transformer
is used to increase the voltage output and increase the output
impedance. Modern ribbon microphones do not suffer from this problem
due to improved magnets and more efficient transformers, and have
output levels that can exceed typi
cal stage dynamic microphones.[1]Ribbon microphones were once
delicate, and expensive, but modern materials, including new
nanomaterials, make present-day ribbon microphones very durable and
may be used for loud rock music and stage use. They are prized for
their ability to capture high-frequency detail, comparing very
favorably with condenser microphones, which can often sound
subjectively "aggressive" or "brittle" in the high end of the
frequency spectrum. Due to their bidirectional pickup pattern, ribbon
microphones are often used  
http://www.chinese-microphone.com/
 in
pairs to produce the Blumlein Pair recording array. In addition to the
standard bidirectional pickup pattern, ribbon microphones can also be
configured to have cardioid, hypercardioid, omnidirectional, and
variable polar patterns.[2]As many mixers are equipped with phantom
power in order to enable the use of condenser microphones, care should
be taken when using condenser and ribbon microphones at the same time.
If the ribbon microphone is improperly wired, which is not unheard of
with older microphones, this capacity can damage some ribbon elements,
but improvements in designs and materials have made those concerns
largely a thing of the past.[3][edit] HistoryRCA "44" ribbon
microphoneIn the late 1920s, Dr. Harry F. Olson of RCA began
development of the ribbon microphone, 铿乺st with 铿乪ld coils and then
with permanent magnets. One of the first ribbon microphones was the
RCA PB-31. Produced in 1931, it was a breakthrough technology in
sound, and revolutionized the audio recording and broadcasting
industries, setting a new standard in frequency response. The clarity
and realism were unmatched by any of the condenser microphones of its
day. [4]Just a few months later, in 1932, the PB-31 was replaced by
the 44A, which was enormously successful and highly regarded for its
smooth tone and defined pattern control, which not only reduced the
effects of reverberation on soundstages, but also offered higher gain-
before-feedback in live sound applications. The 44A was updated with
improved magnetic material in the 44B/44BX models. RCA also launched
the unidirectional 77A/77B models and the multipatte
rn 77C/77D mics. Nearly three-quarters of a century later, many of
these RCA ribbon models are still hard-working audio tools prized by
engineers worldwide.[5]Also of note is the ST&amp;C Coles 4038 (or PGS
- pressure gradient single) designed by the BBC in 1954 and still used
for some applications to this day. Its uses varied from talks to
symphony concerts and is regarded as a delicate, fine traditional
microphone.[6]Around 2002, Chinese-manufactured ribbon microphones
inspired by the RCA-44 and older Russian Oktava ribbon microphones
became available. These mics are relatively inexpensive ($80 - $200).
[7] They are often used fo 
http://www.chinese-microphone.com/
 r
microphone modification upgrades that rival classic ribbon mic
performance.[8]In 2007, new ribbon microphones employing ribbon
elements comprised of strong nanomaterials became available, expanding
the application of the ribbon microphone to virtually any sound
recording application. These improved ribbon microphones are immune to
wind blast, phantom power, rough handling or other extreme conditions.
[9]The ribbon microphone is an electrically simple design with no
active circuitry, and some people have attempted to build them at home
(with varying degrees of success) using basic tools and materials.[10]
[11] The acoustic complexity of ribbon microphones is comparable to
other types of air coupled transducers.[edit] References^
http://mysite.du.edu/~jcalvert/tech/microph.htm
 Prof. James B.
Calvert, Microphones^ 
http://www.recordingeq.com/EQ/req0301/hmre0301.html
Recording Engineer's Quarterly, March 2001^
http://www.epanorama.net/circuits/microphone_powering.html#phantom
Powering microphones by Tomi Engdahl 1997-2000^ 
http://www.coutant.org/12mics/
Jim Webb, Twelve Microphones That Made History^
http://mixonline.com/TECnology-Hall-of-Fame/olson-anderson-rca-090106/
Mix Magazine, RCA 44^ 
http://www.proaudioreview.com/january04/coles4040.shtml
Pro Audio Review^
 
http://www.eqmag.com/article/the-chinese-connection/Mar-06/18126
 EQ
Magazine, The Chinese Connection^
http://www.gearslutz.com/board/high-end/150891-ribbon-madness-some-comparisons.html
Ribbon Madness^ 
http://www.bizjournals.com/masshightech/stories/2008/02/11/story8.html
Local  
http://www.chinese-microphone.com/
 firms strum the chords of
real music innovation Mass High Tech: The Journal of New England
Technology^ 
http://make_a_ribbon_mic.tripod.com/
 How To Make A Ribbon
Mic^ 
http://www.rickshawrecords.com/ribbonmic/
 DIY Ribbon
Microphone[edit] External linksA complete step-by-step tutorial for
building the easy and popular AUSTIN Ribbon MicA wordy project page
about the Spike ribbon micA nice page on how to fix a broken ribbon
microphoneA version of a home-made, yet scary-looking ribbon
micWikiRecording's Ribbon Microphone TipsRetrieved from "http://
en.wikipedia.org/wiki/Ribbon_microphone
" Categories:&#32;Microphones
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