A background noise absorber permits you to measure sound levels accurately even in the presence of high background noise. I want to be able to update a progressbar to the value of audio levelvolume as the sample data arrives. Functions of the extech 407732 sound level meter include data hold and max hold. The a weighting is for general noise sound level and the c. No need for 2 units for measuring low frequency sound and noise. Max hold function keeps the top level held in memory. The hioki ft3432 sound level meter is used in noise management by facilitating the measurement of noise in factories and schools, near machinery, etc. A sound level meter is simply a device with audiofrequency sensing capabilities that is controlled, essentially, by a microcontroller, which measures, compares, and triggers the appropriate action makes an audio announcement to reduce noise level once the.
The bar graph segment that corresponds to the peak reading stays on the display for 2 seconds or until the meter measures a higher maximum level. Hold the meter in hand facing the microphone toward the source of the sound to be measured. The meter displays only the loudest measured sound level during the onesecond sampling period. The manual covers the communication protocol, use of control commands for the sound level meter, format of data output by the sound level meter, and other topics. This multifunctional digital sound noise level meter with lcd display is designed to meet the measurement requirement of noise engineers, noise quality control and health prevention in various environments. Calibrate or check the calibration of sound level meter 2. In addition to the lcd digital display, an analog bargraph provides easy viewing of quickly changing sound levels.
The xl2 is a powerful sound level meter for noise measurements applications. Although this meter is a complex and delicate instrument, its durable structure will allow many years of use if proper operating techniques are developed. As a filmmaker and videographer you probably spend a lot of time trying to get the most beautiful shot possible on set. The project is also connected to audio announcement circuit. Data can be stored in the meter or directly saved on a computer through pc. Small enough to fit in a pocket and weighing just 105 g, the instrument measures sound level, equivalent continuous sound level, sound exposure level. Note that the tripod mount is on the back of meter. Extech 407732 sound level meter sound level meters. Sound level meter type 6236precision sound level meter type.
Please read the following instructions carefully and always keep. A sound level meter is used for acoustic sound that travels through air measurements. Its capable of both a and c level weighting for environmental noise measuring, entertainment noise measurement, and other tasks. The cel246 is an integrating sound level meter with data logging. For example, you might use an audio patch cord to con nect the meter to the aux or high level in put of a recorder. Rionmeasure sounds reliably sound level meter class1 with. If the lcd does not display, check that the battery is good. The sound level meter complies with the requirements of iec 616721. The meter will begin displaying sound level readings. It is commonly a handheld instrument with a microphone. The extech 407732 sound level meter is a high accuracy instrument that meets ansi and iec 651 type 2 standards. Soundlevel meter a device for measuring loudness of noise.
Model km 8080 km 8080 is the most popular sound level meter that gives possibilities of measuring of noise with hindication of digital display with analog graph. The sound level meter mode is ideal for measuring overall sound pressure levels. We have 2 radio shack sound level meter manuals available for free pdf download. A sound level meter is simply a device with audio frequency sensing capabilities that is controlled, essentially, by a microcontroller, which measures. Extech 407732 sound level meter sound level meters instrumart. This page lists 10 rion sound level meter models by application type. The extech hd600 datalogging noise level meter features three measuring ranges from 30 to db with 1. A sound level meter is used for acoustic measurements. Rionmeasure sounds reliably sound level meter class1. Construction of soundlevel meterwithits unique applications. Technical data sheet 01db smart building acousticssolution. Sound level meter testo 8161 sound level measurement with integrated data storage db the testo 8161 is ideal for sound level measurements at workplaces, in industrial and production halls, and in public places.
The meter response will not be flat, due to the a and cweighting networks. Sennheiser audio level meter upm 550, has been used to achieve aweighting filter response. Even brief exposure at that level can cause permanent hearing damage. Radio shack sound level meter owners manual pdf download. So our project continuously measure sound pressure, and compare with critical noise level set using microcontroller programming. May, 2016 download virtual sound level meter for free. Serial interface manual describes how to use the serial interface built into the sound level meter nl20. Risepro decibel meter, digital sound level meter 30 db audio noise measure device backlight maxmin, data hold auto power off dual ranges ht80a decibel meter, meterk digital sound level meter, range 30dba noise volume measuring instrument selfcalibrated decibel monitoring testerbattery included.
The lineup ranges from highly affordable models for quick and easy measurement to products suitable for largescale environmental noise monitoring. The diaphragm of the microphone responds to changes in air pressure caused by sound waves. To ensure that you can get the most from it, we recommend that you read and follow the manual carefully before use. Construction of meter block diagram of sound level meter the microphone is a transducer which converts sound to voltage. Check out this convenient mini sound level meter from pyle. Fast and slow time weighting to get the results you need. It is commonly a hand held instrument with a microphone. The best type of microphone for sound level meters is the condenser microphone, which combines precision with stability and reliability.
Setting amplifier gain for optimal sound levels biamp. Noise measurements can be downloaded to a windows computer over a usb interface. Task 1 measurement of noise and vibrations by sound level meter. This project is aimed at designing and implementing a sound level meter, with audio announcement for maintaining peace and quietness in a library. Abstract as our final year project we are going to present sound level meter with voice announcement. The instrument is ready to measure literally seconds after you press the power button. Sound level meter marks a step forward for you into the field of precision measurement.
Sound level meter type 6236precision sound level meter. The slm700 is a stable, safe and reliable sound level meter, designed for all kinds of sound level measurements and compliant to all international standards for. A sound level meter can be used for measuring sound or noise for community noise analysis, building acoustics, industrial noise control, machinery noise analysis, and further applications. Its capable of both a and clevel weighting for environmental noise measuring, entertainment noise measurement, and other tasks. Genradgeneral radio 1565b sound level meter iet labs, inc. There are no line or microphone cords to trip over or bother with, and the ergonomically designed controls permit one hand operation and rapid interpretation of the results just aim and read.
For example, you might use an audio patch cord to connect the meter to the aux or high level input of a recorder. Alternatively, there are many apps and microphones available for phones and tablets. Extech type 2 35 decibel to decibel digital sound level meter whether youre monitoring workplace machinery, installing audio or alarm systems, or handling product noise certification and reduction, the extech digital sound level meter gets the job done. The xl2 is currently the worlds most versatile handheld acoustic and audio. Data logging sound level meters such as our dsm402sd, dsm403sd and dsm20 provide the documentation needed to prove compliance with regulatory limits on noise. Sound level meters generally consist of an omnidirectional condensing microphone, electronic circuits, and the meter display. Realtime applications for our sound level meters include soundsystem setups, music recording, and measurement of the noise produced by a machine or vehicle or typical of an environment. It is fully cosine corrected for the angular incidence of light. This project is the matlab development of a virtual sound level meter. Radio shack sound level meter manuals manuals and user guides for radio shack sound level meter. The sc160 can be used as either a sound level meter or as a spectrum analyser and room noise evaluator by nc curves.
Sound level meter type 6236 precision sound level meter type 6238. The illuminance meter is compact, tough and easy to handle owing to its construction. For example, you might use an audio patch cord to connect the meter to the aux or highlevel input of a recorder. Introduction this equipment has been designed to meet measurement requirement of safety engineers, health, industrial safety office and sound quality control in various environment which include factory, office, traffic, family and audio system this equipment has the following functions. Use these tips when it comes time to set audio levels for video and film projects.
Adjust the level on the dfg module until slm reads 60 db on the fast c or linear scale. The heart of the circuit is ic lm 3915 audio level ic. The sc160 is a userfriendly, low cost, class 2 integrating sound level meter. Measure from low frequency sound to noise 1hz to 2,000hz with a single unit simultaneously. Task 1 measurement of noise and vibrations by sound level. Find great deals on ebay for radio shack sound level meter and radio shack sound level meter 332050. Virtual sound level meter for analyzing calibrated sound files. For best results, it is recommended to use an ansi type 1 or 2 sound level meter with a calibrated measurement microphone, particularly if there is a requirement for compliance with osha, noise ordinances, or other jurisdictional regulations. Exairs model 9104 digital sound level meter is an easy to use instrument that can measure and monitor the sound level pressure in a wide variety of industrial environments. Measure octave band spectra of grinding machine and transmission.
This meter is ideal for basic occupational noise measurements to osha, european, canadian and many other regulations. Sound level meter testo 8161 sound level measurement with integrated data storage. Realtime applications for our sound level meters include sound system setups, music recording, and measurement of the noise produced by a machine or vehicle or typical of an environment. Measure third octave band analysis of the source of noise in the given position 3. Sensitivity of the meter is increased by using lm741 op amp ic as preamplifier. With the touch of a button, the measuring instrument can be switched from slow 1 sec. Your digital sound level meter provides automatic or manual ranging in six measurement ranges from 30 to db. The digital illuminance meter is a precision instrument used to measure illuminance in the field. Soundlevel meter article about soundlevel meter by the. The hioki ft3432 is a highly sensitive 30db to db sound level meter with dc output to data acquisition equipment for analyzing equipment sound. Power the meter by moving the range switch to the lo or hi position. In home audio, a sound pressure level meter can be used to help get the best sound out of your speakers. Failure to observe the following procedures could damage the instrument.
Measurement settings and results level values and bar graph are shown on the backlit lcd panel. If the lcd does not switch on, check the 9v battery located in the rear battery compartment. Owners manual radio shack sound level meter owners manual 20 pages. This multifunctional digital soundnoise level meter with lcd display is designed to meet the measurement requirement of noise engineers, noise quality control and health prevention in various environments. Audio sound level meterled sound level meter using lm3915. In home audio, a soundpressure level meter can be used to help get the best sound out of your speakers. The testo 8161 is ideal for sound level measurements. Apr 09, 2015 an introduction howto for the exair digital sound level meter have a question about this product.
Supports octave and octave real time analysis, fft analysis and waveform recording as an option. Products sound level meters for noise monitoring from. Professional sound engineers often use one to check the volume coming out of a pa at a big stadium show, trying to get the sound to peak at a certain level. Sl4010 your purchase of this sound level meter marks a step forward for you into the field of precision measurement. Here in this project, we are going to construct a sound level meter that displays a bar graph using 10 leds. Reed sound level meters are used every day by industrial maintenance teams as part of their preventative maintenance programs. A sound level meter is a way to measure how loud, in decibels, music is playing.
How to make audio level, vu meter using lm3914 ic today i will show you how to make audio level indicator vu meter circuit using lm3914 ic make at home. Calibrate the sound level meter by vibrating table 4. An integrating octave band sound level meter with advanced data logging, time history, realtime octave band filters and audio recording. The hd600 decibel meter meets ansi and iec 616721 type 2 standards. Manuals and user guides for radio shack sound level meter. Measurement of noise and vibrations by sound level meter 1. Sound meter the amprobe sm10 sound level meter is designed to meet the measurement requirements of safety engineers, health, industrial safety offices and quality control in various environments. The handheld xl2 analyzer is a powerful sound level meter, a professional. The extech 407732 sound level meter has high 65 to db and low 35 to 100db measuring ranges enabling its use in a variety of environments. The 1565b soundlevel meter fits in the palm of your hand, and operates in severe environments for up to fifty hours using a standard 9v battery. Installing audio and alarm systems product noise certification and reduction specifications displaycounts 2000countlcd range 40todb basicaccuracy 2db condensermicrophone 0. The intuitive navigation and flexible user interface assist in simplifying every task.
Moreover, in the field of product development such as car parts electric appliances, etc. This is a onechip sound level meter that can be used for displaying the sound level of an amplifier or simply the sound level from a microphone. Reed instruments offers the latest technology in sound level meters also known as decibel and noise meters. Failure to observe the following procedures may result in serious personal injury not for use in explosive or hazardous locations. A soundlevel meter is a way to measure how loud, in decibels, music is playing. Our project measure sound pressure level and display it on 162 lcd. Place the meter on a tripod or hold the meter in hand facing the microphone toward the source of the sound to be measured. Nti audio ag is a leading manufacturer of test and measurement solutions for acoustics, audio and vibration applications. An introduction howto for the exair digital sound level meter have a question about this product. Onsite measurement of environmental noise is strongly expected to have high resolution and realtime analyzing function on the spot. The testo 8161 is ideal for sound level measurements at. How to make audio level, vu meter using lm3914 ic youtube.642 119 167 1508 1029 1603 810 1368 1086 1478 432 1611 1414 105 1567 850 355 1627 1124 1200 1151 987 860 1126 27 596 861 803 1001 897 726 865 1061 292 1443 1484 21 136 538 364 853