Fast and slow time weighting to get the results you need. Extech 407732 sound level meter sound level meters. As a filmmaker and videographer you probably spend a lot of time trying to get the most beautiful shot possible on set. Reed sound level meters are used every day by industrial maintenance teams as part of their preventative maintenance programs.
A sound level meter is simply a device with audio frequency sensing capabilities that is controlled, essentially, by a microcontroller, which measures. 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. Its capable of both a and c level weighting for environmental noise measuring, entertainment noise measurement, and other tasks. Power the meter by moving the range switch to the lo or hi position. 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. Rionmeasure sounds reliably sound level meter class1. Please read the following instructions carefully and always keep. The cel246 is an integrating sound level meter with data logging. The digital illuminance meter is a precision instrument used to measure illuminance in the field. If the lcd does not display, check that the battery is good. This project is aimed at designing and implementing a sound level meter, with audio announcement for maintaining peace and quietness in a library. 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 xl2 is currently the worlds most versatile handheld acoustic and audio. Adjust the level on the dfg module until slm reads 60 db on the fast c or linear scale.
In home audio, a sound pressure level meter can be used to help get the best sound out of your speakers. The sound level meter complies with the requirements of iec 616721. We have 2 radio shack sound level meter manuals available for free pdf download. A sound level meter is a way to measure how loud, in decibels, music is playing. The extech 407732 sound level meter is a high accuracy instrument that meets ansi and iec 651 type 2 standards.
It is commonly a hand held instrument with a microphone. It is fully cosine corrected for the angular incidence of light. Functions of the extech 407732 sound level meter include data hold and max hold. 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. The instrument is ready to measure literally seconds after you press the power button. Sensitivity of the meter is increased by using lm741 op amp ic as preamplifier. Setting amplifier gain for optimal sound levels biamp. Rionmeasure sounds reliably sound level meter class1 with. 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. The hioki ft3432 sound level meter is used in noise management by facilitating the measurement of noise in factories and schools, near machinery, etc. Construction of meter block diagram of sound level meter the microphone is a transducer which converts sound to voltage. Sound level meter type 6236precision sound level meter. Your digital sound level meter provides automatic or manual ranging in six measurement ranges from 30 to db.
Serial interface manual describes how to use the serial interface built into the sound level meter nl20. The handheld xl2 analyzer is a powerful sound level meter, a professional. Even brief exposure at that level can cause permanent hearing damage. The hioki ft3432 is a highly sensitive 30db to db sound level meter with dc output to data acquisition equipment for analyzing equipment sound. 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. Here in this project, we are going to construct a sound level meter that displays a bar graph using 10 leds. If the lcd does not switch on, check the 9v battery located in the rear battery compartment. Small enough to fit in a pocket and weighing just 105 g, the instrument measures sound level, equivalent continuous sound level, sound exposure level. Apr 09, 2015 an introduction howto for the exair digital sound level meter have a question about this product. Sound level meter type 6236 precision sound level meter type 6238. 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. The xl2 is a powerful sound level meter for noise measurements applications.
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. The testo 8161 is ideal for sound level measurements at. Task 1 measurement of noise and vibrations by sound level meter. In home audio, a soundpressure level meter can be used to help get the best sound out of your speakers. Radio shack sound level meter owners manual pdf download. Use these tips when it comes time to set audio levels for video and film projects. Alternatively, there are many apps and microphones available for phones and tablets. The extech hd600 datalogging noise level meter features three measuring ranges from 30 to db with 1. Nti audio ag is a leading manufacturer of test and measurement solutions for acoustics, audio and vibration applications. The lineup ranges from highly affordable models for quick and easy measurement to products suitable for largescale environmental noise monitoring. Technical data sheet 01db smart building acousticssolution. 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. Find great deals on ebay for radio shack sound level meter and radio shack sound level meter 332050.
Calibrate or check the calibration of sound level meter 2. Onsite measurement of environmental noise is strongly expected to have high resolution and realtime analyzing function on the spot. 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. The testo 8161 is ideal for sound level measurements. May, 2016 download virtual sound level meter for free. This project is the matlab development of a virtual sound level meter. Hold the meter in hand facing the microphone toward the source of the sound to be measured. Max hold function keeps the top level held in memory. The best type of microphone for sound level meters is the condenser microphone, which combines precision with stability and reliability. 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. Construction of soundlevel meterwithits unique applications. Sound level meter testo 8161 sound level measurement with integrated data storage. 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. The heart of the circuit is ic lm 3915 audio level ic.
Measurement settings and results level values and bar graph are shown on the backlit lcd panel. A sound level meter is used for acoustic measurements. For example, you might use an audio patch cord to connect the meter to the aux or highlevel input of a recorder. Sl4010 your purchase of this sound level meter marks a step forward for you into the field of precision measurement. Sound level meter marks a step forward for you into the field of precision measurement. 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. Sennheiser audio level meter upm 550, has been used to achieve aweighting filter response. Note that the tripod mount is on the back of meter. Thank you for using our data logger sound level meter. The microphone of the sound level meter contains a flexible membrane that moves slightly when the sound waves hit it. Virtual sound level meter for analyzing calibrated sound files. A sound level meter is used for acoustic sound that travels through air measurements. Moreover, in the field of product development such as car parts electric appliances, etc.
In addition to the lcd digital display, an analog bargraph provides easy viewing of quickly changing sound levels. How to make audio level, vu meter using lm3914 ic youtube. 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. The intuitive navigation and flexible user interface assist in simplifying every task. This page lists 10 rion sound level meter models by application type. Soundlevel meter article about soundlevel meter by the. Products sound level meters for noise monitoring from. Supports octave and octave real time analysis, fft analysis and waveform recording as an option. The sc160 is a userfriendly, low cost, class 2 integrating sound level meter. The sound level meter mode is ideal for measuring overall sound pressure levels. It is commonly a handheld instrument with a microphone. The diaphragm of the microphone responds to changes in air pressure caused by sound waves. Radio shack sound level meter manuals manuals and user guides for radio shack sound level meter. Although this meter is a complex and delicate instrument, its durable structure will allow many years of use if proper operating techniques are developed.
Soundlevel meter a device for measuring loudness of noise. Our project measure sound pressure level and display it on 162 lcd. Owners manual radio shack sound level meter owners manual 20 pages. 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 a weighting is for general noise sound level and the c. A soundlevel meter is a way to measure how loud, in decibels, music is playing. Manuals and user guides for radio shack sound level meter. The meter response will not be flat, due to the a and cweighting networks. 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 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. Its capable of both a and clevel weighting for environmental noise measuring, entertainment noise measurement, and other tasks. 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. Measure from low frequency sound to noise 1hz to 2,000hz with a single unit simultaneously.
A background noise absorber permits you to measure sound levels accurately even in the presence of high background noise. Installing audio and alarm systems product noise certification and reduction specifications displaycounts 2000countlcd range 40todb basicaccuracy 2db condensermicrophone 0. 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. 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. 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. No need for 2 units for measuring low frequency sound and noise. Noise measurements can be downloaded to a windows computer over a usb interface. 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. Audio sound level meterled sound level meter using lm3915.
Calibrate the sound level meter by vibrating table 4. Failure to observe the following procedures may result in serious personal injury not for use in explosive or hazardous locations. The meter displays only the loudest measured sound level during the onesecond sampling period. The sc160 can be used as either a sound level meter or as a spectrum analyser and room noise evaluator by nc curves. For example, you might use an audio patch cord to connect the meter to the aux or high level input of a recorder. Failure to observe the following procedures could damage the instrument. Data can be stored in the meter or directly saved on a computer through pc. The illuminance meter is compact, tough and easy to handle owing to its construction. 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. 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. The project is also connected to audio announcement circuit. 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. With the touch of a button, the measuring instrument can be switched from slow 1 sec. Extech 407732 sound level meter sound level meters instrumart.
I want to be able to update a progressbar to the value of audio levelvolume as the sample data arrives. To ensure that you can get the most from it, we recommend that you read and follow the manual carefully before use. 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. Task 1 measurement of noise and vibrations by sound level. An introduction howto for the exair digital sound level meter have a question about this product. Genradgeneral radio 1565b sound level meter iet labs, inc. So our project continuously measure sound pressure, and compare with critical noise level set using microcontroller programming.
Sound level meters generally consist of an omnidirectional condensing microphone, electronic circuits, and the meter display. Place the meter on a tripod or hold the meter in hand facing the microphone toward the source of the sound to be measured. Reed instruments offers the latest technology in sound level meters also known as decibel and noise meters. Measure third octave band analysis of the source of noise in the given position 3. Abstract as our final year project we are going to present sound level meter with voice announcement. The meter will begin displaying sound level readings. Data logging sound level meters such as our dsm402sd, dsm403sd and dsm20 provide the documentation needed to prove compliance with regulatory limits on noise. Check out this convenient mini sound level meter from pyle. Measurement of noise and vibrations by sound level meter 1.
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