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• COBY CVE5 DYNAMIC STEREO EARPHONE W/CASE - Electronic Appliances.
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• Earphone with Microphone.

• Joytech GBA SP Earphones + Earphone Adaptor on GBA from Gameseek. ...
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• Stereo Earphone Adapter, allows use of stereo headphones for private play .
• There are no reviews for Joytech GBA SP Earphones + Earphone Adaptor (GBA) yet! - Write your own Review here.

• COBY CVE05 STEREO EARPHONE.
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• Earphone characteristic measuring device.
• An earphone characteristic measuring device comprises an acoustic coupler having an acoustic tube simulated to an external auditory canal in which an earphone under measurement is to be inserted and an acoustic tube of a smaller diameter having an acoustic impedance of approximately 320 ohms connected to an end of the first acoustic tube, a sound source for emitting an impulse sound to the acoustic coupler, a microphone mounted at the end of the first acoustic tube for picking up sound pressure information and a characteristic calculation circuit for transforming an earphone characteristic of the acoustic coupler to an earphone characteristic of a real ear based on an input impedance of the acoustic coupler viewed from an end of the earphone inserted in the acoustic coupler and an input impedance of the real ear represented by a sum of an eardrum impedance of the real ear and an external auditory canal volume of the real ear, stored in a memory in response to the sound pressure information from the microphone. The use of the acoustic coupler of a simple structure facilitates the measurement of a vent characteristic of the earphone and an insertion gain and improves reliability of the measurement.
• An earphone characteristic measuring device for simulation-measuring a characteristic of an earphone in a real ear, comprising:.
• an acoustic coupler including an acoustic tube having an opening to which an earphone under measurement is to be removably mounted and having an acoustic resistance termination;.
• inc of said acoustic coupler viewed from an end of an earmold of said earphone inserted into said acoustic coupler, an input impedance Z. ...
• characteristic calculation means coupled to said memory means for transforming the earphone characteristic of the acoustic coupler to the earphone characteristic of the real ear; and output means coupled to said characteristic calculation means for outputting a calculation result.
• An earphone characteristic measuring device according to claim 1, wherein said memory means stores a program for calculating by said characteristic calculation means a vent characteristic H. ... r of a vented earphone in the real ear; ##EQU6## where H. ...
• An earphone characteristic measuring device according to claim 1, wherein said memory means stores a program for calculating by said characteristic calculation means an insertion gain G. ...
• An earphone characteristic measuring device according to claim 1, wherein said acoustic coupler is mounted in a dummy head simulated to a human head through a pinna formed on an outer periphery of said dummy head.
• An earphone characteristic measuring device according to claim 4, wherein said dummy head is mounted on a dummy body simulated to a human body.
• An earphone characteristic measuring device according to claim 1, wherein said sound source means includes an electrical impulse generating circuit having an impulse period irregularly changed in a predetermined pattern, and impulse response thereto being averaged in said memory means.
• An earphone characteristic measuring device according to claim 1, wherein said acoustic coupler comprises a further acoustic tube of a smaller diameter than said acoustic tube of said acoustic coupler, said further acoustic tube being connected to an end of said acoustic tube and having an acoustic impedance of approximately 320 ohms.
• An earphone characteristic measuring device according to claim 2, wherein said acoustic coupler is mounted in a dummy head simulated to a human head through a pinna formed on an outer periphery of said dummy head.
• An earphone characteristic measuring device according to claim 8, wherein said dummy head is mounted on a dummy body simulated to a human body.

• Game Boy Advance SP Earphone Adapter: Cobalt.
• Game Boy Advance SP Earphone Adapter: Cobalt -- Product Details.
• Game Boy Advance SP Earphone Adapter: Cobalt -- Customer Reviews.
• Rating: - Works fine - Annoying to require special earphones I bought the earphone adapter so that my son can play our Game Boy on a flight without annoying everyone or having to battle with him to keep the volume down. ...

• Coby CVM29 Hands-Free Neckband Earphone w/ Microphone.
• Coby CVM807 Two-in-One Stereo Neckband Earphone with Hands-Free Kit.
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• Re: Shure In-Ear monitoring system earphone recommendation?.
• In reply to: Michael Drainer: "Re: Shure In-Ear monitoring system earphone recommendation?" .
• Next in thread: Ivan Smith: "Re: Shure In-Ear monitoring system earphone recommendation?" .

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