Microphone Reflection Filter

Microphone Reflection Filter

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POSTAUDIO ARF 32 Ambient Room Microphone Reflection Filter
POSTAUDIO ARF 32 Ambient Room Microphone Reflection Filter
Paypal   US $89.00
Post Audio ARF 32 v2 Reflexion Filter Portable Vocal Booth For Microphone Stand
Post Audio ARF 32 v2 Reflexion Filter Portable Vocal Booth For Microphone Stand
Paypal   US $129.99
SHURE 65BA8451 Screw On Battery Cup For Shure PGX SLX Series Mic Transmitter
SHURE 65BA8451 Screw On Battery Cup For Shure PGX SLX Series Mic Transmitter
Paypal   US $13.99
Audio Technica AT4047 SV Cardoid Condenser Mic AT 4047 AT4047SV
Audio Technica AT4047 SV Cardoid Condenser Mic AT 4047 AT4047SV
Paypal   US $498.00
BINAURAL EAR MOUNTED ELECTRET CONDENSER MICROPHONE
BINAURAL EAR MOUNTED ELECTRET CONDENSER MICROPHONE
Paypal   US $45.56
SHURE SLX2 BETA58 J3 UHF Wireless Microphone Trasmitter
SHURE SLX2 BETA58 J3 UHF Wireless Microphone Trasmitter
Paypal   US $279.00
SHURE SLX2 SM58 J3 UHF Handheld Transmitter w SM58 Microphone 572 596 MHz J3
SHURE SLX2 SM58 J3 UHF Handheld Transmitter w SM58 Microphone 572 596 MHz J3
Paypal   US $219.00
NEW AE F ACOUSTIC REFLECTION FILTER PORTABLE VOCAL SOUND BOOTH REFLEXION
NEW AE F ACOUSTIC REFLECTION FILTER PORTABLE VOCAL SOUND BOOTH REFLEXION
Paypal   US $129.99
Audio Technica AT4033A Dynamic Cable Professional Microphone with case VGC
Audio Technica AT4033A Dynamic Cable Professional Microphone with case VGC
Paypal   US $199.00
Post Audio ARF 32 ARF32 Microphone Reflection Filter Mic Screen NEW
Post Audio ARF 32 ARF32 Microphone Reflection Filter Mic Screen NEW
Paypal   US $129.00
AUDIO TECHNICA AT4047 SV CARDIOD STUDIO CONDENSER MICROPHONE
AUDIO TECHNICA AT4047 SV CARDIOD STUDIO CONDENSER MICROPHONE
Paypal   US $212.50
SHURE RPW118 Wireless Beta58A Cartridge Housing Assembly And Matte Grille
SHURE RPW118 Wireless Beta58A Cartridge Housing Assembly And Matte Grille
Paypal   US $122.99
AUDIO TECHNICA AT4040SP AT 4040 SP STUDIO PACK MIC NEW
AUDIO TECHNICA AT4040SP AT 4040 SP STUDIO PACK MIC NEW
Paypal   US $549.00
Audio Technica AT4047SV Condenser Cable Professional Microphone
Audio Technica AT4047SV Condenser Cable Professional Microphone
Paypal   US $499.00
SHURE PG48 LC Cardioid Dynamic Vocal Mic On Off Switch
SHURE PG48 LC Cardioid Dynamic Vocal Mic On Off Switch
Paypal   US $34.00
SHURE 565SD LC Cardioid Dynamic Classic Unisphere Mic
SHURE 565SD LC Cardioid Dynamic Classic Unisphere Mic
Paypal   US $115.39
SHURE RK354SB Lapel Mic Clip For WL93 SM93 2 Pk
SHURE RK354SB Lapel Mic Clip For WL93 SM93 2 Pk
Paypal   US $11.99
HOSA HMIC 025 REAN XLR Female To XLR Male Pro Mic Cable 25 NEW WIRELESSSOUNDS
HOSA HMIC 025 REAN XLR Female To XLR Male Pro Mic Cable 25 NEW WIRELESSSOUNDS
Paypal   US $21.19
SENNHEISER ew300 2IEMG3 G Wireless Monitoring System
SENNHEISER ew300 2IEMG3 G Wireless Monitoring System
Paypal   US $1,199.95
Audio Technica AT4050ST Stereo Condenser Microphone AT 4050ST 4050 ST Mic
Audio Technica AT4050ST Stereo Condenser Microphone AT 4050ST 4050 ST Mic
Paypal   US $999.00
SHURE PG288 PG58 H7 Wireless Microphone System
SHURE PG288 PG58 H7 Wireless Microphone System
Paypal   US $549.00
NEW SHURE PGX WIRELESS MICROPHONE SM58 UHF SM 58 MIC
NEW SHURE PGX WIRELESS MICROPHONE SM58 UHF SM 58 MIC
Paypal   US $399.99
Audio Technica AT4033 CL Side Address Mic Microphone ProAudioStar
Audio Technica AT4033 CL Side Address Mic Microphone ProAudioStar
Paypal   US $285.00
NEW AUDIO TECHNICA AT4040 AT 4040 CARDIOID STUDIO MICROPHONE
NEW AUDIO TECHNICA AT4040 AT 4040 CARDIOID STUDIO MICROPHONE
Paypal   US $299.01
Audio Technica AT4047 SV AT 4047SV Side Address Mic
Audio Technica AT4047 SV AT 4047SV Side Address Mic
Paypal   US $499.00
Audio Technica AT4047 Condensor Microphone AT 4047
Audio Technica AT4047 Condensor Microphone AT 4047
Paypal   US $479.00
Audio Technica AT4047 SV Cardioid Condenser Microphone NEW FREE SHIPPING
Audio Technica AT4047 SV Cardioid Condenser Microphone NEW FREE SHIPPING
Paypal   US $699.00
Audio TechnicaAT4050 Multi Pattern MicFREE 2 DAYPRO Microphone AT 4050 NEW
Audio TechnicaAT4050 Multi Pattern MicFREE 2 DAYPRO Microphone AT 4050 NEW
Paypal   US $699.01
Audio Technica AT4040 Audio technica Cardioid Condenser Microphone
Audio Technica AT4040 Audio technica Cardioid Condenser Microphone
Paypal   US $299.00
Audio Technica AT4033 CL Cardioid Condenser Microphone Bundle
Audio Technica AT4033 CL Cardioid Condenser Microphone Bundle
Paypal   US $399.00
Audio Technica AT4033 CL Cardioid Condenser Microphone
Audio Technica AT4033 CL Cardioid Condenser Microphone
Paypal   US $399.00
Audio Technica AT4033CL Condenser Microphone ShockMnt
Audio Technica AT4033CL Condenser Microphone ShockMnt
Paypal   US $399.99
Shure PGX24 SM58 Wireless Handheld System With SM 58 Dynamic Vocal Mic NEW
Shure PGX24 SM58 Wireless Handheld System With SM 58 Dynamic Vocal Mic NEW
Paypal   US $399.00
Audio Technica AT4040 Studio Condenser Microphone
Audio Technica AT4040 Studio Condenser Microphone
Paypal   US $299.00
New sE Electronics Reflexion Filter Pro RF PRO Stand Mounted Portable Acoustic
New sE Electronics Reflexion Filter Pro RF PRO Stand Mounted Portable Acoustic
Paypal   US $299.00
NEW AKG D4400 VOCAL DYNAMICS SUPERCARDIOID MICROPHONE MIC AUTHORIZED DEALER
NEW AKG D4400 VOCAL DYNAMICS SUPERCARDIOID MICROPHONE MIC AUTHORIZED DEALER
Paypal   US $59.95
Post Audio ARF 12 Reflection Filter Portable Vocal Booth Mounts On Mic Stand 
Post Audio ARF 12 Reflection Filter Portable Vocal Booth Mounts On Mic Stand 
Paypal   US $149.00
AUDIO TECHNICA U891RC Cardioid Condenser Boundary Microphone 5 Count
AUDIO TECHNICA U891RC Cardioid Condenser Boundary Microphone 5 Count
Paypal   US $700.00
Audio Technica AT4033 CL Audio technica Cardioid Condenser Studio Microphone
Audio Technica AT4033 CL Audio technica Cardioid Condenser Studio Microphone
Paypal   US $399.00
iSK Professional Studio Microphone Kit Condenser Ribbon Mic Accessories
iSK Professional Studio Microphone Kit Condenser Ribbon Mic Accessories
Paypal   US $799.99
Audio Technica AT4050
Audio Technica AT4050
Paypal   US $700.00
Audio Technica AT4050 LE
Audio Technica AT4050 LE
Paypal   US $770.00
Audio Technica AT4050 URUSHI
Audio Technica AT4050 URUSHI
Paypal   US $2,000.00
Violet Design GOLD FINGER Cardioid Condenser Microphone
Violet Design GOLD FINGER Cardioid Condenser Microphone
Paypal   US $360.00
SE Electronics PSRF Project Studio Reflection Filter
SE Electronics PSRF Project Studio Reflection Filter
Paypal   US $199.00
NRG SA 825 Legend Series Pro Cardioid Dynamic Handheld Microphone SA825
NRG SA 825 Legend Series Pro Cardioid Dynamic Handheld Microphone SA825
Paypal   US $121.93
Audio Technica AT4033 SE Cardioid Capacitor Recording
Audio Technica AT4033 SE Cardioid Capacitor Recording
Paypal   US $319.99
Audio Technica AT4040 Cardioid Condenser Side Address Microphone Mic
Audio Technica AT4040 Cardioid Condenser Side Address Microphone Mic
Paypal   US $299.00
Audio Technica AT4047SV Condenser Cable Pro Microphone
Audio Technica AT4047SV Condenser Cable Pro Microphone
Paypal   US $699.00
Audio Technica AT4033CL Condenser Cable Microphone
Audio Technica AT4033CL Condenser Cable Microphone
Paypal   US $399.00

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For More choices check out Microphone Reflection Filter some of our other merchants.

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K&M PopKiller Microphone Pop Filter


K&M PopKiller Microphone Pop Filter


$44.95


K&M PopKiller Microphone Pop Filter has a double nylon screen that ensures superior performance. Unobtrusive black round filter frame. Non-marring locking screw prevents scratching your microphone stand.

Nady SSPF-4 Microphone Pop Filter


Nady SSPF-4 Microphone Pop Filter


$29.95


The Nady SSPF-4 microphone pop filter has an integrated spider shock mount with 8 elastic suspension points to prevent vibration and significantly reduces the noise transmitted from the mic stand. The Nady SSPF-4 mic filter also features a pinch clamp holder than fits any microphone with a diameter of 38–53mm.

Nady Sspf-4 Microphone Pop Filter


Nady Sspf-4 Microphone Pop Filter


$29.95


The Nady SSPF-4 microphone pop filter has an integrated spider shock mount with 8 elastic suspension points to prevent vibration and significantly reduces the noise transmitted from the mic stand. The Nady SSPF-4 mic filter also features a pinch clamp holder than fits any microphone with a diameter of 3853mm.8 elastic suspension points isolate the mic from vibrationCurved metal pop filter protects your mic from the wildest vocal takesPinch clamp holder fits any microphone with diameter 38-53mmPop filter can be rotated down or removed completelyAdjustable swivel attachment fits standard mic stands

Sabra Som Universal Microphone Shockmount With Pop Filter


Sabra Som Universal Microphone Shockmount With Pop Filter


$189.99


The Sabra mic protection kit is just what you need for your studio! The heavy-duty double support system and noise suppressor hold your mics gently, keeping floor rumble at bay. The integral pop filter does what all good pop filters do: it keeps those plosive consonants from overloading the signal or even damaging the mic capsule.Universal double support with 5/8" thread Mechanical noise suppressor support Pop filter for hard phonetic impact sounds

Applied Microphone Technology ERTS Percusssion Microphone


Applied Microphone Technology ERTS Percusssion Microphone


$343


The AMT ERTS is a 2nd generation microphone system for drums and percussion instruments designed, hand-manufactured, and distributed by Applied Microphone Technology in the USA. Its mini condenser microphone features natural and even sound reproduction, resistance to feedback, and high SPL tolerances, making it perfect for professional live and studio use. The mic system comes with 1 AMT microphone with Iso-Ring technology, an AMT inline preamp (phantom power required), and a clamp that fits onto various drums and percussion instruments. It can even attach to the ropes of hand drums.The ERTS incorporates a flat frequency response, allowing the microphone to reproduce percussion instruments as naturally as possible. The inline preamp can be placed on the floor, a belt clip for mobility, or in your pocket. A low roll-off filter and a dB cut are included on the inline preamp.

Blue Cactus Tube Microphone


Blue Cactus Tube Microphone


$2499


With detailed information in the midrange area and a soft silky response in the top end, the Cactus Tube Microphone from Blue details and mellows the program material. The Cactus Microphone's amplifier design is based on a single vacuum tube sub-miniature. Multipattern. 20Hz - 20kHz frequency range. Blue includes a power supply, ATA flight case, series one shockmount/pop filter, and Kiwi cord with your Cactus Tube Microphone.Requires phantom power.

Applied Microphone Technology HR3 Harmonica Microphone


Applied Microphone Technology HR3 Harmonica Microphone


$239


The AMT HR3 is Applied Microphone Technology's 3rd generation of harmonica microphone systems. It's designed and manufactured by hand in the USA to reproduce the sound of the harmonica as naturally as possible.The HR3 microphone is intended to fit different-sized harmonicas from diatonic to 16-hole. The HR3, unlike its predecessors, has a clamp that adjusts by a thumb and allen screw to fit different instruments. The HR3 mic also includes AMT's DCT (Disconnecting Cable Technology), allowing for easy replacement of the cable from the harmonica microphone and giving it the ability to interface with various wireless systems on the market.The included AMT inline preamp can be used on the floor, with a belt clip, or in a pocket, and it has a low roll-off filter as well as a dB cut. The system includes a soft carrying pouch, AMT inline preamp (phantom power required), and adjustable clamp.

Applied Microphone Technology Erts Percusssion Microphone


Applied Microphone Technology Erts Percusssion Microphone


$343


The AMT ERTS is a 2nd generation microphone system for drums and percussion instruments designed, hand-manufactured, and distributed by Applied Microphone Technology in the USA. Its mini condenser microphone features natural and even sound reproduction, resistance to feedback, and high SPL tolerances, making it perfect for professional live and studio use. The mic system comes with 1 AMT microphone with Iso-Ring technology, an AMT inline preamp (phantom power required), and a clamp that fits onto various drums and percussion instruments. It can even attach to the ropes of hand drums.The ERTS incorporates a flat frequency response, allowing the microphone to reproduce percussion instruments as naturally as possible. The inline preamp can be placed on the floor, a belt clip for mobility, or in your pocket. A low roll-off filter and a dB cut are included on the inline preamp.Mini percussion condenser microphone for live and studio applicationsIncludes carrying pouch, 6' cable, ERTS clamp, and AMT inline preamp (phantom power required)

Neumann Kms105 Microphone Black


Neumann Kms105 Microphone Black


$699.95


The Neumann KMS105 Microphone provides superior voice resolution with extended frequency response and accurate transient detail. A studio condenser capsule delivers vocal nuances with focus and power. This Neumann microphone features a supercardioid polar pattern, low self-noise, and colorless off-axis pickup complement in-ear personal monitor systems. The KMS105 mic has a 4-layer acoustic filter that virtually eliminates unwanted pops and handling noise.Requires phantom power.

Shure Pg48-Qtr Microphone With Switch


Shure Pg48-Qtr Microphone With Switch


$39


The Shure PG48-QTR Vocal Microphone comes complete with a 15', 1/4" phone cable and clip for plug and play convenience. The dynamic cartridge offers rugged, reliable performance and its cardioid pattern rejects noise and minimizes feedback. Built-in pop filter and on-off switch. Includes clip, mic pouch, and educational guide.Dynamic cartridge offers rugged, reliable performanceCardioid pattern rejects noise and minimizes feedbackNeodymium magnet produces high outputBuilt-in pop filter and on/off switchIncludes 15' cable, clip, and storage bag

Applied Microphone Technology Hr3 Harmonica Microphone


Applied Microphone Technology Hr3 Harmonica Microphone


$239


The AMT HR3 is Applied Microphone Technology's 3rd generation of harmonica microphone systems. It's designed and manufactured by hand in the USA to reproduce the sound of the harmonica as naturally as possible.The HR3 microphone is intended to fit different-sized harmonicas from diatonic to 16-hole. The HR3, unlike its predecessors, has a clamp that adjusts by a thumb and allen screw to fit different instruments. The HR3 mic also includes AMT's DCT (Disconnecting Cable Technology), allowing for easy replacement of the cable from the harmonica microphone and giving it the ability to interface with various wireless systems on the market.The included AMT inline preamp can be used on the floor, with a belt clip, or in a pocket, and it has a low roll-off filter as well as a dB cut. The system includes a soft carrying pouch, AMT inline preamp (phantom power required), and adjustable clamp.Fits microphones of all sizes, from diatonic to 16-holeDisconnecting Cable Technology allows for easy cable replacementIncludes carrying pouch, inline preamp (phantom power required), and adjustable clamp

Rode Microphones Procaster Dynamic Microphone


Rode Microphones Procaster Dynamic Microphone


$229


The RDE Procaster is a professional broadcast quality dynamic microphone, specifically designed to offer uncompromising performance for voice applications in the broadcast environment. Featuring a tight polar pattern and tailored-for-voice frequency response, the Procaster microphone is great for every application where a great-sounding, rugged microphone with great ambient noise rejection is demanded.Broadcast quality soundHigh output dynamic capsuleBalanced, low impedance outputInternal shock mounting of capsule for low handling noiseInternal pop-filter to reduce plosivesRobust, all metal constructionDesigned and manufactured in AustraliaTen year warranty

Nady SCM 1000 Microphone


Nady SCM 1000 Microphone


$129.99


The Nady SCM 1000 Microphone is equipped with transformerless output and true condenser design for exceptionally low self-noise and increased dynamic range. It provides enhanced low- and high-end response with improved linearity across the frequency range and high SPL capacity. The Nady microphone features a large dual-diaphragm capsule, selectable low-cut filter, 10dB attenuation pad, and 3 polar patterns (omni, cardioid, and figure 8). Uses an FET specially chosen for its low distortion and superior S/N ratio.Requires phantom power.

Shure Sm48s-Lc Microphone


Shure Sm48s-Lc Microphone


$59.99


The Shure SM48S-LC Mic is for those who want to step up to the quality of a Shure vocal microphone, but can't fit an SM58 into their budget. The SM48S-LC has a voice-contoured presence boost for that trademark Shure vocal sound, plus a unidirectional polar pattern to prevent feedback, cartridge shockmounting to suppress handling noise, and a pop filter to handle those "p" peaks. An on/off switch makes the SM48S-LC microphone particularly handy for solo and lounge gigs. Excellent for vocals, but also works well on many instruments. This same Shure mic is also available without the on/off switch.

Behringer B-5 Condenser Microphone


Behringer B-5 Condenser Microphone


$75.99


The Behringer B-5 Condenser Microphone features interchangeable cardioid and omnidirectional capsules and a gold-sputtered diaphragm. It is perfect for acoustic instruments, vocals, and overhead miking. Its ultralow-noise, transformerless FET input eliminates low-frequency distortion. The -10dB attenuator can be used with high-volume signal sources, while the low-cut filter eliminates floor rumble. Behringer delivers the B-5 Condenser Microphone in a rugged hard case with stand adapter and windscreen.Requires phantom power.Condenser typeInterchangeable capsules, for cardioid and omnidirectional patternsGold-sputtered diaphragmLow-noise transformerless FET input-10dB attenuatorLow-cut filterIncludes hard case, stand adapter, and windscreen

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Post Audio ARF-32 12 Inch Ambient Room Filter Post Audio ARF-32 12 Inch Ambient Room Filter
List Price: $199.99
Sale Price: $129.00

At 18 inches wide and 12 inches high, this is not only our largest filter. It is our lightest filter as well. It includes all the hardware to mount the filter and your mic on any standard issue mic stand.

SeElectronics Project Studio Reflexion Filter SeElectronics Project Studio Reflexion Filter
List Price: $249.00
Sale Price: $199.00

After 3 years and many poor imitations of sE Electronics now industry standard design, sE Electronics have gone back to the drawing board to produce what many budget concuss customers have so desired....

SE Electronics Reflexion Filter Pro Ambience Control SE Electronics Reflexion Filter Pro Ambience Control
List Price: $399.00
Sale Price: $299.00

The sE Electronics Reflexion Filter is portable. It's innovative. It's versatile. It uses state of the art materials. It works, and its a fraction of the price of acoustically treating your studio environment! With the RF you can bring acoustic treatment with you wherever you need it and improve your recordings...

Foscam FI8918W Wireless/Wired Pan & Tilt IP/Network Camera with 8 Meter Night Vision and 3.6mm Lens (67° Viewing Angle) Foscam FI8918W Wireless/Wired Pan & Tilt IP/Network Camera with 8 Meter Night Vision and 3.6mm Lens (67° Viewing Angle)
Sale Price: $75.50
Used From: $84.50

The Foscam FI8918W Wireless IP Camera (White) offers features such as high-quality video and audio, pan/tilt, remote internet viewing, motion detection and night-vision. With 1/4" color CMOS image sensor, it delivers clear images in MJPEG format at a resolution of 640 x 480...

SeElectronics Instrument Reflexion Filter Microphone Screen SeElectronics Instrument Reflexion Filter Microphone Screen
Sale Price: $199.00

SM Pro Audio Mic Thing w/ Stand Microphone Isolation Panel SM Pro Audio Mic Thing w/ Stand Microphone Isolation Panel
List Price: $399.99
Sale Price: $329.99

The Mic Thing is a portable multi-purpose acoustic treatment panel suitable for minimizing room artifacts and improving separation during microphone recording sessions. Great for a range of applications including helping to control room ambience, minimizing spill from instrument amplifiers, or even creating temporary control rooms the Mic Thing is certainly one handy thing! The Mic Thing can be mounted on just about any microphone, drum, or speaker stand up to 1 in...

Q-Mic QM-101 Ultimate Stereo Reflexion Filter / Vocal Booth Q-Mic QM-101 Ultimate Stereo Reflexion Filter / Vocal Booth
List Price: $299.95
Sale Price: $219.95

There's nothing quite like the QM-101. First, we eliminated the quirky c-clamp mounting hardware that the competition uses, for a more stable center mass mounting on the top of the mic stand. This eliminates stability problems encountered with clamp mounting, so your expensive gear won't go crashing to the floor...

Microphone Stand Mountable Reflection Screen. Microphone Stand Mountable Reflection Screen.
Sale Price: $250.00

Canon EOS 60D 18 MP CMOS APS-C Digital SLR Camera with EF-S 18-55mm f/3.5-5.6 IS Lens + 2x Telephoto lens + Wide Angle Lens (3 Lens Kit) + 32GB SDHC Memory + Car+Home Battery Charger + 3 Piece Filter Kit + Full Size Tripod + Shockproof Case + Accessory Kit Canon EOS 60D 18 MP CMOS APS-C Digital SLR Camera with EF-S 18-55mm f/3.5-5.6 IS Lens + 2x Telephoto lens + Wide Angle Lens (3 Lens Kit) + 32GB SDHC Memory + Car+Home Battery Charger + 3 Piece Filter Kit + Full Size Tripod + Shockproof Case + Accessory Kit
Sale Price: $1,199.00

Kit Includes! » Canon EOS 60D 18 MP CMOS APS-C Digital SLR Camera with EF-S 18-55mm f/3.5-5.6 IS Lens » 32GB SDHC Memory Card » USB SDHC Memory Card Reader » Lithium Ion High Capacity Battery » Home+Car Rapid Battery Charger » UV, Florescent, Polarizer Filter Kit » ShockProof Case » 2x Telephoto Lens » Super Wide Angle Lens » Professional Full Size Tripod » LCD Screen Protectors » Lens/LCD Cleaning Kit » Mini Table Size Tripod More About This Camera! With the new EOS 60D DSLR, Canon gives the photo enthusiast a powerful tool fostering creativity, with better image quality, more advanced features and automatic and in-camera technologies for ease-of-use...

Auralex SonoLite Panel 2'x2'x1 Auralex SonoLite Panel 2'x2'x1" Tan
Sale Price: $29.99

SonoLite absorption panels are designed to reduce unwanted reflections and flutter echo in critical listening environments such as control rooms, live rooms and rehearsal spaces. These 2'x2'x1" panels will clean up the sound in your room, and are a cost-effective alternative to fiberglass cloth-covered panels...


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Microphone Reflection Filter

A Role of Sensors for Industrial Applications

Since a significant change involves an exchange of energy, sensors can be classified according to the type of energy transfer that they detect. Thermal temperature sensors: thermometers, thermocouples, temperature sensitive resistors (thermistors and resistance temperature detectors), bi-metal thermometers and thermostats

heat sensors: bolometer, calorimeter

 

Electromagnetic electrical resistance sensors: ohmmeter, multimeter

Electrical current sensors: galvanometer, ammeter

Electrical voltage sensors: leaf electroscope, voltmeter

Electrical power sensors: watt-hour meters

Magnetism sensors: magnetic compass, fluxgate compass, magnetometer, Hall Effect device,

Metal detectors

 

Mechanical pressure sensors: altimeter, barometer, barograph, pressure gauge, air speed indicator, rate of climb indicator, variometer

gas and liquid flow sensors: flow sensor, anemometer, flow meter, gas meter, water meter, mass flow sensor  mechanical sensors: acceleration sensor, position sensor, selsyn, switch, strain gauge

 

Chemical sensors detect the presence of specific chemicals or classes of chemicals. Examples include oxygen sensors, also known as lambda sensors, ion-selective electrodes, pH glass electrodes, and redox electrodes.

 

Optical and radiation electromagnetic time-of-flight. Generate an electromagnetic impulse, broadcast it, and then measure the time a reflected pulse takes to return. Commonly known as - RADAR (Radio Detection And Ranging) are now accompanied by the analogous LIDAR (Light Detection And Ranging. See following line), all being electromagnetic waves. Acoustic sensors are a special case in that a pressure transducer is used to generate a compression wave in a fluid medium (air or water)

light time-of-flight. Used in modern surveying equipment, a short pulse of light is emitted and returned by a retro reflector. The return time of the pulse is proportional to the distance and is related to atmospheric density in a predictable way.

 

Ionizing radiation

 

Radiation sensors: Geiger counter, dosimeter, Scintillation counter, Neutron detection

Subatomic particle sensors: Particle detector, scintillator, Wire chamber, cloud chamber, bubble chamber

 

Non-ionising radiation

 

light sensors, or photo detectors, including semiconductor devices such as photocells, photodiodes, phototransistors, CCDs, and Image sensors; vacuum tube devices like photo-electric tubes, photomultiplier tubes; and mechanical instruments such as the Nichols radiometer. Infra-red sensor, especially used as occupancy sensor for lighting and environmental controls.

Proximity sensor- A type of distance sensor but less sophisticated. Only detects a specific proximity. May be optical - combination of a photocell and LED or laser. Applications in cell phones, paper detector in photocopiers, auto power standby/shutdown mode in notebooks and other devices. May employ a magnet and a Hall effect device.

scanning laser- A narrow beam of laser light is scanned over the scene by a mirror. A photocell sensor located at an offset responds when the beam is reflected from an object to the sensor, whence the distance is calculated by triangulation.

focus. A large aperture lens may be focused by a servo system. The distance to an in-focus scene element may be determined by the lens setting.

binocular. Two images gathered on a known baseline are brought into coincidence by a system of mirrors and prisms. The adjustment is used to determine distance. Used in some cameras (called range-finder cameras) and on a larger scale in early battleship range-finder

interferometer. Interference fringes between transmitted and reflected lightwaves produced by a coherent source such as a laser are counted and the distance is calculated. Capable of extremely high precision.

Scintillometers measure atmospheric optical disturbances.

 

Acoustic sound sensors: microphones, hydrophones, seismometers.

 

Acoustic: uses ultrasound time-of-flight echo return. Used in mid 20th century polaroid cameras and applied also to robotics. Even older systems like Fathometers (and fish finders) and other 'Tactical Active' Sonar (Sound Navigation And Ranging) systems in naval applications which mostly use audible sound frequencies.

 

 

Other types motion sensors: radar gun, speedometer, tachometer, odometer, occupancy sensor, turn coordinator

Orientation sensors: gyroscope, artificial horizon, ring laser gyroscope

distance sensor (non contacting) Several technologies can be applied to sense distance: magnetostriction

 

 

 

 

Non Initialized systems

 

Gray code strip or wheel- a number of photo detectors can sense a pattern, creating a binary number. The gray code is a mutated pattern that ensures that only one bit of information changes with each measured step, thus avoiding ambiguities.

 

Initialized systems

These require starting from a known distance and accumulate incremental changes in measurements.

 

Quadrature wheel- An disk-shaped optical mask is driven by a gear train. Two photocells detecting light passing through the mask can determine a partial revolution of the mask and the direction of that rotation.

whisker sensor- A type of touch sensor and proximity sensor.

 

Classification of measurement errors

A good sensor obeys the following rules:

 

the sensor should be sensitive to the measured property

the sensor should be insensitive to any other property

the sensor should not influence the measured property

In the ideal situation, the output signal of a sensor is exactly proportional to the value of the measured property. The gain is then defined as the ratio between output signal and measured property. For example, if a sensor measures temperature and has a voltage output, the gain is a constant with the unit [V/K].

 

If the sensor is not ideal, several types of deviations can be observed:

 

The gain may in practice differ from the value specified. This is called a gain error.

Since the range of the output signal is always limited, the output signal will eventually clip when the measured property exceeds the limits. The full scale range defines the outmost values of the measured property where the sensor errors are within the specified range.

If the output signal is not zero when the measured property is zero, the sensor has an offset or bias. This is defined as the output of the sensor at zero input.

If the gain is not constant, this is called nonlinearity. Usually this is defined by the amount the output differs from ideal behavior over the full range of the sensor, often noted as a percentage of the full range.

If the deviation is caused by a rapid change of the measured property over time, there is a dynamic error. Often, this behavior is described with a bode plot showing gain error and phase shift as function of the frequency of a periodic input signal.

If the output signal slowly changes independent of the measured property, this is defined as drift.

Long term drift usually indicates a slow degradation of sensor properties over a long period of time. Noise is a random deviation of the signal that varies in time.

 

Hysteresis is an error caused by the fact that the sensor not instantly follows the change of the property being measured, and therefore involves the history of the measured property.

If the sensor has a digital output, the signal is discrete and is essentially an approximation of the measured property. The approximation error is also called digitization error.

If the signal is monitored digitally, limitation of the sampling frequency also causes a dynamic error.

 Sensor may to some extent be sensitive for other properties than the property being measured. For example, most sensors are influenced by the temperature of their environment.

All these deviations can be classified as systematic errors or random errors. Systematic errors can sometimes be compensated for by means of some kind of calibration strategy. Noise is a random error that can be reduced by signal processing, such as filtering, usually at the expense of the dynamic behaviour of the sensor.

 

 

Resolution

 

The resolution of a sensor is the smallest change it can detect in the quantity that it is measuring. Often in a digital display, the least significant digit will fluctuate, indicating that changes of that magnitude are only just resolved. The resolution is related to the precision with which the measurement is made. For example, a scanning probe (a fine tip near a surface collects an electron tunneling current) can resolve atoms and molecules.

 

 

Biological

 

All living organisms contain biological sensors with functions similar to those of the mechanical devices described. Most of these are specialized cells that are sensitive to:

 

Light, motion, temperature, magnetic fields, gravity, humidity, vibration, pressure, electrical fields, sound, and other physical aspects of the external environment;

Physical aspects of the internal environment, such as stretch, motion of the organism, and position of appendages (proprioception);

an enormous array of environmental molecules, including toxins, nutrients, and pheromones;

Many aspects of the internal metabolic milieu, such as glucose level, oxygen level, or osmolality;

an equally varied range of internal signal molecules, such as hormones, neurotransmitters, and cytokines;

and even the differences between proteins of the organism itself and of the environment or alien creatures.

Artificial sensors that mimic biological sensors by using a biological sensitive component, are called biosensors.

 

Actuator

Data acquisition

Data acquisition system

Data logger

 Detection theory

Fully Automatic Time

Hydrogen microsensor

Lateral line

Limen

 List of sensors

Machine olfaction

Receiver operating characteristic

Sensor network

About the Author

Assistant professor in lord venkateswara engineering college.I am doing phd in sathyabama university, Tamil Nadu,India.