dB or dB(A). You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. In this example you perform an audible range FR measurement by sweeping a sine wave from the lowest frequency in the range to the highest. Accurate and long-lasting, the RISEPRO Decibel Meter can provide precise data regarding the noise... Decibel Meter, Meterk Digital Sound Level Meter, Range 30-130dB(A) Noise Volume Measuring Instrument Self-Calibrated Decibel Monitoring Tester(Battery Included), Join Prime to save $4.32 more on this item, Cadrim Digital Sound Level Meter - Decibel Meter Noise Measure Device with Large LCD Display High Accuracy Range 30-130dBA (Battery Included), TestHelper Sound Level Meter Tester 30-130db,Large Screen LCD Display Wall Hanging Type Decibel Noise Measuring with Alarm (Sound Level Meter with Data Logger), Professional Decibel Meter, Digital Sound Level Meter with Backlight Display High Accuracy Measuring 30dB-130dB (with Data Record Function), Hand-Held Sound Level Meter,V-Resourcing 30~130 dB Decibel Noise Measurement Tester with Backlight Digital LCD Display for Indoor/Outdoor Uses [Max/Min/Hold Function], Laser Measure Rechargeable, TECCPO Laser Distance Meter 196ft, 99 Sets Data Storage, Electronic Angle Sensor, 2.25' LCD Backlit, Mute Function, Measure Distance, Area, Volume, Pythagoras - TDLM10P, Decibel Meter, DTOWER Digital Sound Level Meter, Noise Volume Measuring Instrument, Self-Calibrated Sound Pressure Level Reader, LCD Noise Meter with Backlight for Indoor/Outdoor Use, 30-130dBA Range, Decibel Meter, TACKLIFE Digital Sound Level Meter 30-130dB(A) Range with Sound Simulation, Max/Min/Data Hold, Fast/Slow Mode, Self-Calibration Noise Meter, Battery Included -MLM02, Magicteam Sound Machines White Noise Machine with 20 Non Looping Natural Soothing Sounds and Memory Function 32 Levels of Volume Powered by AC or USB and Sleep Sound Timer Therapy for Baby Kids Adults, Decibel Meter Sound Meter 30-130 dB Noise Meter Max/Min/Data Hold Sound Level Reader LCD Display Auto Backlight Digital Sound Level Meter Flashlight Audio Noise Volume Measuring Monitoring Instrument, EMF Meter, Electromagnetic Field Radiation Detector 5HZ—3500MHz with 3 Levels Sound-Light Alarm, Digital LCD for Testing Ghost, Magnetic Field, Electric Field Radiation and Ambient Temperature - MET01, Decibel Meter Sound Level Reader -Digital dB SPL Portable Pressure Noise Volume Measurement Device | Voice Loudness Measuring Sensor Audio Tester -Momenturn, PerfectPrime RF0350, Laser Distance Digital Range Finder Meter Diastimeter Measuring Device with Clip/Level Bubble 164ft, Pythagorean mode/Volume/Area calculation, LCD Backlight/IP54 Water/Dust Proof, Sound & Noise Meters/Decibel Meter/Sound Pressure Level Reader (SPL)/Noise Measure Device, Level Meter Detects Noise Level Size Test Meter Decibel Instrument 30-130db 31.5-8khz, REED Instruments R8050 Sound Level Meter, Type 2, 30-100 and 60-130dB, +/-1.4 dB Accuracy, Supply Various Professional Microscope Micrometers. The second plot is the maximum power the spectrum analyzer computed for each frequency bin, as the sine wave swept over the spectrum. Based on your location, we recommend that you select: . You clicked a link that corresponds to this MATLAB command: Run the command by entering it in the MATLAB Command Window. Audio Meter is freeware (no commercials, no in app purchases, FREE!) Choose C-weighted on the SPLM when you want to get a measurement of the entire frequency range from 32Hz to 10,000Hz. The frequency response plot indicates that the audio device tested in this example has a flat frequency response in the audible range. Accelerating the pace of engineering and science. The sampling frequency is set to 48 kHz. A loopback cable is used to physically connect the audio-out port of the sound card to its audio-in port. In this example, you measure the FR by playing an audio signal through audioDeviceWriter and then recording the signal through audioDeviceReader. We can obtain information on the frequency … The most basic measurement any sound level meter can make is an overall dB level. To start, use the audioDeviceReader System object™ and audioDeviceWriter System object to connect to the audio device. A basic FR measurement consists of two or three test tones: mid, high, and low. You’re seeing this ad based on the product’s relevance to your search query. The sound is then evaluated within the device and acoustic measurement … A flat response indicates an audio device that responds equally to all frequencies. Top subscription boxes – right to your door, © 1996-2020, Amazon.com, Inc. or its affiliates. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. A flat response indicates an audio device that responds equally to all frequencies.

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