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- The IEC 711 coupler is a standard for insert-type earphones that became an IEC standard in 1981 and is standardized up to 10 kHz1. The coupler is used to measure the acoustic performance of earphones and simulates the insertion of an earplug catheter into the ear canal or auricle2. The IEC 60318-4 standard used to be called IEC 711, so ear simulators based on this standard are often nicknamed "711 simulators" or "711 couplers"3. It's important to note that the 711 ear simulators only simulate human hearing from 100 Hz to 10 kHz3.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.The IEC 60711 standard is used for insert-type ear phones. This coupler (711) became an IEC standard in 1981 and is standardized up to 10 kHz. The 318 is standardized to 8 kHz.audioxpress.com/article/testing-headphones-and-e…CRY711 Ear simulator/coupler It complies with IEC 60318-4 (60711), ITU-T Rec. P.57, with the resonance frequency of 13.5 kHz. Its acoustic impedance is similar to that of the human ears. CRY711 Ear Simulator is an ear simulator that simulates the insertion of an earplug catheter into the ear canal or auricle, and simulates ...www.crysound.com/en/product/details/48.htmlBecause the IEC 60318-4 standard used to be called IEC 711 (and then IEC 60711), ear simulators based on this standard are often nicknamed simply "711 simulators," "711 couplers," or even just "711." What many do not know is that the 711 standard is, again, 40 years old. What many also don't know is that these 711 ear ...www.head-fi.org/threads/headphone-measurement…
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WEBModel AEC304, often referred to as a Series 711 Coupler, is designed to test earphones inserted in the ear. Includes ½ inch 12.5 mV/Pa matched microphone; Meets IEC 60318-4 and IEC 60711:1981 requirements
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