What is deep ear, what is shallow ear? At present, there is no standard yet. Personal opinion is that all catheters + earmuffs belong to the deep ear, otherwise they belong to the shallow ear. (As shown below) In-ear earplugs Shallow in-ear earplugs In-depth features of ear
Read moreIntroduction In recent years, due to the rapid development of China's social economy and changes in people's lifestyles, the incidence of cardiovascular disease and related risk factors have been rising, and people are paying more and more attention to their physical
Read moreInterconnect solutions provider Molex, in conjunction with other members of the Optical Interworking Forum (OpTIcal Internetworking Forum, OIF), conducted a live demonstration of OIF interoperability during the 2012 European Conference on CommunicaTIon (ECOC 2012) In achieving
Read moreThe basic circuit of the "digital power amplifier" is an already existing Class D amplifier (referred to as Class D amplifier in China). Previously, due to price and technical reasons, this amplifier circuit was only used in laboratories or high-priced test instrumen
Read more1. TDA1521 TDA1521 / TDA1514A are two chips specially designed and launched by Philips in the Netherlands for the low distortion and high stability of digital audio during playback. They are used to connect the CD player for direct output of particularly good sound quality.
Read moreAccording to the ABI survey report, in 2011, the market share of the semiconductor market in the mobile field (including processors, radio frequency circuits, power management and wireless interconnection, etc.) reached more than 30 billion US dollars. ABI has not estimated t
Read moreWDR requires the use of fast-reading CMOS image sensors. With CCD image sensors, users are restricted to use continuous 1 / 60s or 2x 1 / 30s parity field synthesis. In the new technology with wide dynamic range, users can take a long exposure of 1 / 30s image, use a short exp
Read moreWDR requires the use of fast-reading CMOS image sensors. With CCD image sensors, users are restricted to use continuous 1 / 60s or 2x 1 / 30s parity field synthesis. In the new technology with wide dynamic range, users can take a long exposure of 1 / 30s image, use a short exp
Read moreQualcomm has planned to provide support for 27 Russian GLONASS navigation satellites on the mid-end models S2 and S3 of its Snapdragon mobile processor. Previously, it supported GPS communication with 24 satellites. Smartphones usually require at least 4 satellites for comple
Read moreGenerally speaking, electromagnetic noise is difficult to eliminate, but various measures can be taken to suppress electromagnetic noise to a level that does not cause electromagnetic interference. It is often difficult to use a simple method to solve the electromagnetic noise
Read moreWhat is HDCD? HDCD is the abbreviation of High DefiniTIon CompaTIble Digital (High Resolution Compatible Digital Technology). It uses a new recording technology to exceed the traditional CD system 44.1 when the analog audio signal on the master tape is sent to the HDCD encode
Read moreWhat is HDCD? HDCD is the abbreviation of High DefiniTIon CompaTIble Digital (High Resolution Compatible Digital Technology). It uses a new recording technology to exceed the traditional CD system 44.1 when the analog audio signal on the master tape is sent to the HDCD encode
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