IEC SOUND SYSTEM EQUIPMENT – PART 1: GENERAL. Buy IEC Ed. Sound system equipment. Part 1: General from SAI Global. Buy IEC SOUND SYSTEM EQUIPMENT – GENERAL from SAI Global.

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Five separate sequences are provided, each designed to measure specific characteristics. You 602681- see results of such measurements in the form of histogram on Portable players page. It can be created by passing pink noise 600268-1 a special filter network defined in IEC Methods for specifying and measuring general characteristics used for equipment performance.

Test Setup for measuring headphone voltage sensitivity. A special test signal “Program Simulation Noise”, whose spectral content is representative of music and speech.

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Calibrate the Headphone Amplifier channels per the instructions in the SoundCheck manual. Methods for specifying and measuring general characteristics ic for equipment performance 06268-1 T he new audio metric allows to measure waveform degradation using music as a test signal.

Please download Chrome or Firefox or view our browser tips. This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. This is an even-only harmonics companion of standard triangle signal. It consists of two pure tones: Try to mine at least hashes. There are several unique Signal Paths used in the sequences which are not a part of the default SoundCheck installation.

Calibrate the headphone amplifier channels per the instructions in the SoundCheck manual. Ieec the smart route to manage medical device compliance.

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You are ready to start the sequence. You may find similar items within these categories by selecting from the choices below:. If the answer is Yes, the user is prompted to turn the ANC on and the sequence repeats the passive measurements.

A statistics step calculates the mean of the 3 unoccluded measurements. The sequence first plays a stepped sine through both channels of the DUT and captures the sound radiation from the DUT using 2 reference mics.

6026-1

The folder contains dependent files required 602668-1 run the sequences. The content you have requested is available only to registered visitors. You may experience issues viewing this site in Internet Explorer 9, 10 or 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: If passive, connect to the headphone amp or separate audio power amplifier You are 6026-1 to start the sequence.

The Hz recorded time waveforms are processed using heterodyne analysis to derive their fundamental values.

Search all products by. For the purpose a new audio metric is used. It is recommended that the sequences be run ied from the IEC folder.

All signals are 30s long, dBFS rmsstereo, 16bit and have Hz sample rate. Sound System Equipment — Part 7: BS EN adds an additional requirement – that the crest factor of the test signal the ratio between the instantaneous peak level of the signal and its RMS level be between 1.

Worldwide Standards We can source any standard from anywhere in the world. Headphone Voltage Sensitivity Final Display.

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We use cookies to make our website easier to use and to better understand your needs. Learn more about the cookies we use and how to change your settings. The faster, easier way to work with standards. Registration required The content you have requested is available only to registered visitors. Your basket is empty. Audio equipment, Audio systems, Communication equipment, Performance testing, Acoustic testing, Acoustic measurement, Testing conditions, Accuracy, Marking, Test equipment, Experimental data, Graphic representation, Magnetic field measurement, Frequencies, Signal level, Weighting functions, Errors, Calibration.

Band-limited version of triangle wave is used.

BS 6840-1:1987, IEC 60268-1:1985

It is generated by means of Fourier synthesis http: The spectra are then power summed to derive a single SPL value and the Hz fundamentals are post processed to derive their SPL values. Test signals Along with listening tests SoundExpert performs objective measurements of audio devices and technologies. While test signals can be of any kind the measurement procedure stays the same and waveform degradation is measured with a single parameter – Difference level dB.

The play 602268-1 record acquisition takes place 3 times and the user is prompted to reposition the DUT on the HATS in between acquisitions. Software Requirements SoundCheck Verfahren zur Festlegung und Messung von allgemeinen Kennwerten ice die Geraeteleistung.