EN 60268-7 PDF

Maumi Sound system equipment — Part 7: Headphones and earphones A test signal is sent to the transducer headphonewhich in turn is measured by a reference microphone in a coupler. Relink dialog Here is a list of sequences and their default signal paths unique paths are in bold: Calibrate the microphones per the instructions in the SoundCheck manual. You may find similar items within these categories by selecting from the choices below:. Worldwide Standards We can source any standard from anywhere in the world. Your basket empty. If the answer is No, the sequence jumps to post-processing steps which calculate passive attenuation and the final display step.

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Document Status Indicators The Green document status indicator indicates that the document is: Find Similar Items This product falls into the following categories. There are several unique Signal Paths used in the sequences which are not a part of the default SoundCheck installation. Your basket is empty. Certain products may necessitate testing the frequency response at one level and performing a second, higher level test for distortion. Click to learn more. Registration required The content you have requested is available only to registered visitors.

Graphic detail of the DRP using a head-torso simulation device. Now, let us look at the differences. This sequence satisfies the requirements of Section 8. Noise speakers are set up adjacent to the HATS left and right ears. Free to use BIM project management tool provides step-by-step help to define, manage and validate responsibility for information development and delivery at stage of the asset life cycle in level 2 BIM projects.

Take the smart route to manage medical device compliance. Setup System, Hardware and Calibration Before attempting to run any of the sequences, read the following setup instructions. A pink noise stimulus is from the noise speakers and recorded by the occluded ears.

Testing on a head-and-torso simulator. It is recommended that the sequences be run directly from the IEC folder. This document Older versions. Want access to British Standards? It then enters a loop which will run 5 times. First, a pink noise stimulus is played from the noise speakers and recorded by the unoccluded ears.

Some set the drive level to achieve a certain sound pressure level at a given eh others choose the level that equates to 1 mW of power. Crosstalk and radiation curves are then shown on the final display. A statistics step calculates the of the 3 unoccluded measurements. The Amber document status indicator indicates that some caution is needed when using this document — it is either: You may experience issues viewing this site in Internet Explorer 9, 10 or Connect the impedance boxes between the headphone amp out and headphone input.

Marking, Microphones, Audio systems, Ratings, Designations, Instructions for use, Headphones, Classification systems, Frequency response, Earphones, Audio equipment, Voltage measurement, Impedance measurement, Testing conditions, Preamplifiers, Comparative tests, Acoustic measurement, Electrical wave measurement, Electrical properties and phenomena, Acoustic testing. Five separate sequences are provided, each designed to measure specific characteristics. The faster, easier way to work with standards.

If the answer is No, the sequence jumps to post-processing steps which calculate passive attenuation and the final display step. Accept and continue Learn more about the cookies we use and how to change your settings. The user is first prompted to enter the rated voltage.

Effect of acoustic leakage on frequency response. Their committees work with the manufacturing and service industries, government, businesses and consumers eb facilitate the production of British, European and International standards. A series of post-processing steps follow to apply the weighting and correction curves, calculate the LAEQ and then the Simulated Characteristic Voltage is calculated along with the Hz voltage sensitivity.

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