GRAS風(fēng)球AM0009適用于中國(guó)大陸41AM的擋風(fēng)玻璃
GRAS風(fēng)球 GRAS麥克風(fēng) GRAS* GRAS辦事處 GRAS代理 GRAS擋風(fēng)玻璃
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GRAS AM0009 Windscreen for 41AM/CN
Max.diameter x height: 70 x 120 mm
Material: Foam
GRAS AM0009適用于中國(guó)大陸41AM的擋風(fēng)玻璃
大直徑x高度：70 x 120 mm
材料：泡沫
Technology
Introduction
The GRAS AM0009 is a set of 5 windscreens. The windscreen is included with the complete windscreens with birdspikes i.e. AM0145, AM0370, and AM0052 but can be replaced separatelly when worn out.
Design
When a microphone is placed in a laminar flow, turbulence is created which in turn results in unwanted pressure variations on the diaphragm. By using a windscreen the pressure variations are moved as far away from the diaphragm as possible.
Theoretically this supports a “the-bigger-the-better design”, but in practice it is a compromise between air speed reduction, practical size and self-induced noise. Self-induced noise is wobble-noise which is generated, when the windscreen starts moving around the microphone.
The GRAS windscreens are all size optimized and their special, open-cell foam structure and number of pores per inch2 (ppi), are designed to resist a humid environment and at the same time not influence the sound pressure measurement result significantly.
Quality & Warranty
GRAS accessories are made of stainless steel, alloys and high-quality composites. These items are covered by a 2 year warranty respecting their intended use.
On consumables like batteries, cables and windscreen we offer a 6 month warranty.
技術(shù)介紹
GRAS AM0009是一套5塊擋風(fēng)玻璃。擋風(fēng)玻璃包括帶有鳥(niǎo)釘?shù)耐暾麚躏L(fēng)玻璃，即AM0145、AM0370和AM0052，但磨損時(shí)可以單獨(dú)更換。
設(shè)計(jì)
當(dāng)傳聲器置于層流中時(shí)，會(huì)產(chǎn)生湍流，從而導(dǎo)致隔膜產(chǎn)生不必要的壓力變化。通過(guò)使用擋風(fēng)玻璃，壓力變化盡可能遠(yuǎn)離隔膜。
理論上這支持“越大越好的設(shè)計(jì)”，但在實(shí)踐中，這是在空氣速度降低、實(shí)際尺寸和自感噪聲之間的折衷。自感噪聲是當(dāng)擋風(fēng)玻璃開(kāi)始圍繞麥克風(fēng)移動(dòng)時(shí)產(chǎn)生的搖擺噪聲。
GRAS擋風(fēng)玻璃都是尺寸優(yōu)化的，其特殊的開(kāi)孔泡沫結(jié)構(gòu)和每英寸的孔數(shù)（PPI）被設(shè)計(jì)成能夠抵抗潮濕環(huán)境，同時(shí)不會(huì)顯著影響聲壓測(cè)量結(jié)果。
質(zhì)量和保修
GRAS配件由不銹鋼、合金和復(fù)合材料制成。這些產(chǎn)品的預(yù)期用途保修期為2年。
對(duì)于電池、電纜和擋風(fēng)玻璃等消耗品，我們提供6個(gè)月的保修。
Gras 46BP
Gras 46BH
Gras 40SC
Gras 46SA
Gras 26AB
Gras 26AN
Gras 46AR
Gras 26AC
Gras 26HG
Gras 26AS
Gras 26CK
Gras 26CB
Gras 26CG
Gras 26CC
Gras 26CS
Gras 41AC
Gras 40HF
Gras 40HH
Gras AL0030
Gras AA0079
Gras 46BL
Gras 46BD
Gras 46BE
Gras OP0040
Gras OP0041
Gras OP0030
Gras OP0031
Gras OP0032
Gras OP0050
Gras OP0051
Gras OP0070
Gras 44AA
Gras 44AB
Gras OP0045
Gras OP0046
Gras 43AH
Gras 43AI
Gras AA0032
Gras AA0033
Gras AA0034
Gras AA0035
Gras AA0070
Gras AA0073-CL
Gras 12AL
Gras 12AX
Gras 42AG
Gras 42AP
Gras 46BP-1
Gras 46DP-1
Gras 46BH-1
GRAS AM0069
GRAS AM0009
GRAS AM0071
GRAS AM0363
GRAS AM0376
GRAS AM0364
GRAS AM0033
GRAS AM0037
GRAS AM0038
GRAS AM0089
GRAS AM0029
GRAS AM0052
