{"id":795,"date":"2025-05-26T10:50:43","date_gmt":"2025-05-26T01:50:43","guid":{"rendered":"https:\/\/acoustic-measurement.com\/?post_type=technology&#038;p=795"},"modified":"2025-05-26T10:50:43","modified_gmt":"2025-05-26T01:50:43","slug":"headphonetest","status":"publish","type":"technology","link":"https:\/\/acoustic-measurement.com\/en\/technology\/headphonetest\/","title":{"rendered":"Headphone Testing"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Since Sony launched the Walkman\u00ae in the late 1970s, the use of portable audio devices with headphones and earphones has become widespread.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Consumers expect high sound quality from headphones and earphones, and these products must deliver excellent audio performance while also protecting listeners&#8217; hearing.<br>When developing and testing headphones and earphones, it is important to consider the influence of the pinna (the outer part of the ear) and to reproduce a realistic acoustic load.<br>This approach enables realistic evaluation across various product types, including open-back headphones, closed-back headphones, and in-ear monitors (IEMs).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Type 4128-C is a Head and Torso Simulator (HATS) designed to accurately replicate the acoustic properties of an adult human head and upper torso, incorporating an integrated ear simulator.<br>When combined with a LAN-XI input\/output module and the PULSE-based Type 7797 Electroacoustic Testing Software, it enables detailed measurements of headphone performance under realistic usage conditions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Using this system, the following headphone characteristics can be measured:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Output response<\/li>\n\n\n\n<li>Frequency response<\/li>\n\n\n\n<li>Harmonic distortion<\/li>\n\n\n\n<li>Intermodulation distortion<\/li>\n\n\n\n<li>Acoustic load<\/li>\n\n\n\n<li>Simulated insertion characteristics<\/li>\n\n\n\n<li>Left\/right tracking balance<\/li>\n\n\n\n<li>Insertion loss for background noise<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Additionally, the system can be configured to comply with the European standard EN 50332, which specifies the maximum allowable sound pressure levels for portable audio players.<br>This ensures that products meet relevant safety and quality standards.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Since Sony launched the Walkman\u00ae in the late 1970s, the use of portable audio devices with headphones and earphones has become widespread. Consumers expect high sound quality from headphones and earphones, and these products must deliver excellent audio performance while also protecting listeners&#8217; hearing.When developing and testing headphones and earphones, it is important to consider [&hellip;]<\/p>\n","protected":false},"featured_media":502,"parent":0,"template":"","solution_cat":[3],"class_list":["post-795","technology","type-technology","status-publish","has-post-thumbnail","hentry","solution_cat-tax_electric","en-US"],"acf":[],"_links":{"self":[{"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/technology\/795","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/technology"}],"about":[{"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/types\/technology"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/media\/502"}],"wp:attachment":[{"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/media?parent=795"}],"wp:term":[{"taxonomy":"solution_cat","embeddable":true,"href":"https:\/\/acoustic-measurement.com\/wp-json\/wp\/v2\/solution_cat?post=795"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}