IEC 60268 7 PDF

IEC SOUND SYSTEM EQUIPMENT –- PART 7: HEADPHONES AND EARPHONES. Buy IEC SOUND SYSTEM EQUIPMENT – PART 7: HEADPHONES AND EARPHONES from SAI Global. IEC Ed. Sound system equipment – Part 7: Headphones and earphones IEC (E), is applicable to headphones, headsets, earphones.

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Calibrate the microphones per the instructions in the SoundCheck manual.

Once calibrated, position the microphones 0. A series of post processing steps calculates the attenuation curves, their average values and shows them on the final display.

BS EN – Sound system equipment. Headphones and earphones

Please complete the short form below all fields are required. Your basket is empty. First, a pink noise stimulus is played from the noise speakers and recorded by the unoccluded ears. It then enters a loop which will run 5 times.

BS EN 60268-7:2011

It can also be used to characterize the passive attenuation only of a standard non-ANC headphone. The data from each loop iteration is displayed as it is acquired. The Hz recorded time waveforms are processed using heterodyne analysis to derive their fundamental values. The spectra are then power summed to derive a single SPL value and the Hz fundamentals are post processed to derive their SPL values. The content you have requested is available only to registered visitors.

Please download Chrome or Firefox or view our browser tips. We use cookies to make our website easier to use and to better understand your needs. Ie play and record acquisition takes place 3 times and the user is prompted to reposition the DUT on the HATS in between acquisitions.

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Noise speakers are set up adjacent to the HATS left and right ears. Take the smart route to manage medical device compliance.

This approach provides the user with the flexibility to measure all or some of the characteristics of their headphone. Learn more about the cookies we use and how to change your settings. Setup System, Hardware and Calibration Before attempting to run any of the sequences, read the following setup instructions.

Click to learn more. The user is first prompted to enter the rated voltage. Registration required The content you have requested is available only to registered visitors. The sequence uses a stepped sine stimulus to measure frequency response, THD and impedance, a composite signal of 70 Hz and Hz with an amplitude ratio of 4: A pink noise stimulus is played from the noise speakers and recorded by the occluded ears.

Connect the impedance boxes between the headphone amp out and headphone input. Test Setup for measuring headphone voltage sensitivity. This sequence uses a pink noise stimulus to characterize the passive, active and total attenuation oec noise cancelling headphones. Irc then calculates the voltage required to produce 1 mW into the rated impedance.

It is recommended that the sequences be run directly from the IEC folder. In order to add these Signal Paths to your System Calibration or relink to existing Signal Paths, you should open each of the sequences individually and, if prompted, add or relink Paths to your System Calibration.

Crosstalk and radiation curves are then shown on the final display. The standard itself is a 06268 document, 9 Sections and 3 Annexes covering 46 printed pages. If the answer is Yes, the user is prompted to turn the ANC on and the sequence repeats the passive measurements. Relink dialog Here is a list of sequences and their default signal paths unique paths are in bold: You may experience issues viewing this site in Internet Explorer 9, 10 or Search all products ic.

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IEC-60268-7 Headphone Test Sequences

Software Requirements SoundCheck Calibrate the Headphone Amplifier channels per the instructions in the SoundCheck manual. A statistics step calculates the mean of the 3 unoccluded measurements. You are ready to start the sequence.

The folder contains dependent files required to run the sequences. No – I don’t want to receive the latest audio test information by email. This value is converted to dBV and used to calculate the IM and difference frequency stimulus levels. Hardware Requirements In order to run the sequences, the following hardware is required: You may find similar items within these categories by selecting from the choices below:.

Accept and continue Learn more about the cookies we use and how to change your settings. If more than 4 input channels are available, all input signal paths may be assigned to separate hardware channels. The sequence then goes through a series of acquisition steps to generate four fundamental curves which are then post-processed to calculate crosstalk.

Headphone Voltage Sensitivity Final Display. Find Similar Items This product falls into the following categories.

IEC Headphone Test Sequences – Listen, Inc.

The sequence prompts the operator to enter the rated voltage and rated impedance of the 6028. FebDecember 17, – 3: Sound System Equipment — Part 7: This sequence satisfies the requirements of Section 8. Headphones and earphones Status: