Additional information
Origin | Mainland China |
---|---|
Certification | NONE |
Sklep online tanie
66.61 $
4920 in stock
Origin | Mainland China |
---|---|
Certification | NONE |
modname=ckeditor Type1: Basic test of in-ear headphones
Type2:
Standard soft pinna plus head-mounted test board
Type3:
Standard soft pinna plus flat test connector
Type4:
Headphone test dedicated sound card x 1
Type5:
Headphone impedance curve test box x 1+2 recording lines
If you need a pair of left and right pinnas, please buy 2pcs, otherwise 1piece will be sent randomly by default.
IEC711 artificial ear, refer to the design of Danish GRAS and BK artificial ears, with soft pinna, can test in-ear headphones, flat-head headphones, big earmuffs, etc.
This link is a precision version with a base. It supports direct insertion into the 3.5 microphone port of a PC computer.
The IEC711 artificial ear adopts the IEC-711 human ear simulator as the coupling cavity, which is used to couple the earphone with the human ear for acoustic measurement by means of earplugs;
Meet the following criteria:
IEC 60318-4:2010 Ed.1.0 formerly IEC 60711 Electroacoustics-Simulator of human ear and head, Part 4: Measuring plugged ear simulator for plug-in earphones;
SJ/T 10659-1995 An ear simulator for measuring plug-in earphones;
ITU-T recommends P.57, type 2 artificial ear
IEC711 artificial ear technical parameters
Executive standard ITU-T P.57 sec. 5.2 Type 2 proposal and IEC60318-4
Frequency range 100Hz-10kHz ±1dB simulating human ear impedance
Coupling cavity frequency range 20Hz-16kHz used by coupling cavity
IEC711 test tool, precision production according to international standard earphone test requirements, professional factory processing and manufacturing, can test in-ear, moving iron, customized earphones and other tests. With the optional standard test pinna, you can also perform headphone testing, flat headphone testing and more. Commonly used functions include sounding curve, waterfall graph, sudden attenuation and so on.
Main technical performance:
1. Microphone frequency range: 20Hz~20000Hz;
2. Frequency response: le;plusmn;1dB#xff08;20Hz~10000Hz#xff09;, le;plusmn;2dB#xff08;10000Hz~20000Hz#xff09;;
3. Compliance with standards: IEC60711, ITU-T P.57 Recommendation, SJ/Z9150-1987;
The following document is the original IEC standard
1 Scope
This part of IEC 60318 specifies an ear simulator for the measurement of supra-aural and
circumaural earphones #xff08;used for example in audiometry and telephonometry#xff09; applied to the
ear without acoustical leakage, in the frequency range from 20 Hz to 10 kHz. The same
device can be used as an acoustic coupler at additional frequencies up to 16 kHz.
NOTE 1 This device has alternative configurations for supra-aural earphones and different types of circumaural
earphones. In practice, the alternative configurations can be realised through the use of adapters where necessary.
NOTE 2 Repeatability for supra-aural and circumaural earphones may get significantly worse above 10 kHz.
App Led Controller Things Wifi Module Things Esp8266 Esp-01s Smart Switch Relay Wireless Remote Control Switch Smart Home Description: 100 Brand New and High Quality! This WIFI relay based on AI-Thinker ESP-01S WIFI module. It is designed for smart home, Internet of thing and other DIY project. With this smart relay, you will easy to DIY your smart switch to control any device by your phone anywhere. Specification: Product size: 37 x 25mm Operating voltage: DC5V Communication: WIFI ESP8266 module Transmission distance: the maximum transmission distance of 400m open environment, mobile phone equipped with WIFI [...]
41.05 $ Add to cartROVATE Purifier Kitchen Faucet with Filtered 3 way water purifier kitchen faucet:Cold water, hot water, water purifier Drinking water switch and kitchen faucet switch can be turned on at the same time Brass chrome faucet, double handle control, delivery of three stainless steel inlet hose Payment: Shipping: Contact us: Feedback: [...]
108.96 $ Add to cartUniversal 360 Rotation Faucet Bubbler Swivel Water Saving Economizer Head Shower Kitchen Faucet Nozzle Adapter Sink Accessories [...]
44.05 $ Add to cartFeatures: High quality and not fade Convenient to use Comfortable to touch Great helper to pull out drawer, cabinets and other furniture Style: Modern ,durable, simple and elegant design, also not easy to fade out. Specifications: Quantity: 1piece Material:Hollow Stainless Steel Finishing:Brushed Stainless Steel Color:Silver Pitch:Center hole~320mm Detail Size: Please look at option picture Types of:Furniture Handle For:Kitchen Cupboards / Cabinets / Door / Drawer Note: There are errors in manual measurement, please refer to the actual object unit: [...]
40.39 $ Add to cartDescription If you are looking for a professional and bike lock, then your research is over here. Thats because our product can meet your need. Adopted of premium material, it is practical and durable for long time use. It is not easy to get deformed and bring you much convenience. Features -Color:As Shown -Material:ABS, Steel Wire -Note: The first password is 000. - The lock cylinder of the bike lock is made of premium material, with a precise structure to technical opening. - Can be to lock your skis, bikes, trolleys, ski boots and more. You can [...]
45.40 $ Add to cart24V WIFI Controller 7 Days Programmable Room Smart Thermostat for Floor Heat Pump/Central AC System Tuya APP Alexa Voice Control On Appearance 1.Negative black sceen will bring you to a secret world. 2.4.8 inch large colorful display creates your colorful life. 3.Touch buttons to make simple operation. 4.Amazing silver frame opens your modern life. 5.The visiable thickness above the wall is only 2cm 0.787 inch. 6.The snap connection allows you to easily install. 7.Wall mounted or suitable for the installation of Europe, China, Japan, USA and Italy etc,. 8.White, black or brushed stainless steel for your selection. 9.Wrap-around cooling holes [...]
144.86 $ Add to cartSpecification: 1, this is the newest adapter converter; 2,Automatic Volts Converter; 3, It fits for 5V USB Type C Adapter. 65W Max. 4,The input is no more than 22V. 5,Compatible with any USB Type C devices 65W Max. 6, Powerful Connection It comes with 6 Female Plugs,you can charge your USB C devices from 6 different plug laptop adapters, Detail Plug size as follows, M - Square Plug 11.0 x 4.5 : For Lenovo Thinkpad Yoga; K - 7.9 x 5.5mm: For Lenovo Thinkpad; I - 7.4 x 5.0mm: For Dell Hp Laptops; O - 4.5 x 3.0mm: For [...]
54.10 $ Add to cart【The Most Easily Install Single Hole Bathroom Faucet】 Waterfall Bathroom Faucet Packed With 2 Piece Of Standard 1/2 Hot And Cold Water Supply Hoses. 【Drip-Free Valve Of Ceramic Disc Cartridge】 Faucets Bathroom Sink Built-In A Ceramic Disc Cartridge, A High Seal Performance Cartridge Valve Provide You A Smooth Stream And Low Probability Of Leakage. 【EASY TO RETURN 100】 Lifetime replacement warranty and youre protected by getting a new bathroom faucets guarantee ! Any issues of the black waterfall bathroom faucet, please contact us! [...]
90.41 $ Add to cartChcę coś kupić ale szukam informacji jak zamówić... |
Kupiłem coś ale chcę poznać status zamówienia... |
Odebrałem paczkę ale mam pytanie lub problem... |
Chcę dokonać zwrotu i potrzebuję informacji... |
Droptech Sp. z o.o. droptech.polska@gmail.com |
ul. Łódzka 118, Piotrków Tryb. Sprzedajemy tylko przez internet |
NIP: 7712911090 REGON 386758083 |
Wysyłka bezpośrednio od producenta lub dostawcy |
DARMOWA WYSYŁKA + ubezpiecznie dostawy + śledzenie przesyłki |
CAŁKOWITY ZWROT podczas reklamacji |
Reviews
There are no reviews yet.