Microphone device capable of conducting adapterization from long distance

Abstract

The invention discloses a microphone device capable of conducting adapterization from long distance, which comprises two microphones and a casing, wherein the two microphones are connected in parallel and then are placed into the casing; a front voice inlet hole is arranged in front of the casing, and a rear voice inlet hole is arranged in the side surface of the casing. Compared with the existing devices capable of conducting adapterization from long distance, in the invention, the high directionality of the microphone is realized, simultaneously, the physical dimension is greatly reduced, and no signal processing and algorithms are needed in the realization process, therefore, the record device is simple in structure, small and exquisite in dimension, low in cost and easy to realize.

Description

technical field [0001] The invention relates to the technical field of sound pickup devices, in particular to a microphone device for long-distance sound pickup. Background technique [0002] With the pilot promotion of triple play nationwide, the integration of computer network, telecommunication network and cable TV network has become a trend and has preliminary development and application. If you want to integrate the computer network and the telecommunications network on the TV, you need the TV to have the function of long-distance recording, that is, you can easily communicate with the other party at the position of watching TV. [0003] For ordinary recording devices, while the microphone records the target voice signal, it will also record the environmental noise signal. Due to the long recording distance, the signal-to-noise ratio of the microphone recording will be insufficient, thus making the recorded sound blurred. Intelligibility is poor. Therefore, it is nece...

AI Technical Summary

Problems solved by technology

[0004] The current long-distance pickup devices are mainly divided into two categories: one is the gun microphone based on the interference tube structure (such as the microphone commonly used by TV reporters), and its structure is as follows: figure 1 As shown, the characteristic of this type of microphone is to use the porous structure on the interference tube to suppress the sound of non-frontal incoming sound. Since the interference tube is added in the front section of the recording microphone, its length is relatively large, generally above 400mm ; The other is an array microphone based on signal processing algorithm, its structure is as follows figure 2 As shown, this type of microphone module is characterized by the need to use multiple microphones, and the method of signal processing is required to control its directivity, the size is also relatively large (determined by the number of array microphones), and the implementation method is relatively complicated.

[0005] To sum up, in order to achieve high directivity, the existing long-distance microphones usually have relatively large geometric dimensions, or require signal processing algorithms to achieve relatively complex defects.

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