x
uploads/frequency channel.jpg

frequency channel 【電視】頻道。

frequency curve

“ ri chen “ fa shao grade tone frequency channel wire put to use nooxygen - copper to do wire , 75 same axises structure , physics send out of spongy pe insulator high density , much more tieas weaving to protect , enter pvc outcover , pure copper an nomagnetic gold - plating plug it ' s high grade cd , dvd tv tone frequency signal for a special wire , the effect is very good for family - film 日辰發燒級音頻線采用無氧銅導體, 75歐同軸結構設計,物理發泡pe絕緣層、高密度、多層編織屏蔽保護,進口pvc外被,純銅無磁性鍍金插頭,是高級cd 、 dvd機音頻信號輸出專用線,配合使用高保真家庭影院系統效果更為明顯。

A large amount of experience data accumulated through long term operation is introduced . combined with the definition of relative requirements , the choosing and definition of operation index of high - frequency channels specially used for protection of hubei electric power network are discussed and elaborated through calculation and analysis such as input impedance and channel impedance of transmitter , sensitive voltage of received signal , redundancy of received signal , warning of channel redundancy and warning of channel faults etc 引用了長期運行中積累的大量經驗數據,通過計算分析,結合有關規程規定,探討和闡述了湖北電網繼電保護專用高頻通道諸如收信機輸入阻抗及通道阻抗、收信靈敏電平、收信裕度、通道裕度告警、通道異常告警等運行指標的選取和確定。

Wavelet decomposition : db4 wavelet decomposition and energy norm l1 was employed to extract feature of zr - 4 alloy images . with the selected wavelet db4 , features at different frequency channels of life span were gotten . then an energy change at the direction of fracture extension was studied to find the relationship between the feature and life - span . fractal algorithm : feature of image at different channel was extract after wavelet transform 基于小波分解的斷口圖像的分析,首先提取鋯- 4合金低周疲勞斷口紋理圖像的特征,實驗確定了db4小波分解和l1能量的計算方法,求得不同壽命的斷口圖像在各個頻率通道的特征值,斷口圖像的變化反映在特征值的變化,這為圖像的壽命分析提供了一種有效的手段。

When these faults occur they usually produce nonstationary vibration signals , by using wavelet packets transform on these signals , the fractal dimension of each frequency channel is extracted and the box dimension is used to depict the failure characteristics of vibration signals , and then the failure modes can be classified by radial basis function neural network 以小波包分形技術作為訊號的故障特徵識別工具,將訊號分解成各自獨立的頻帶,然后計算每個頻帶訊號的盒維數,以盒維數量化的結果來描述系統之狀況。

According to practical test on high - frequency channels of electric lines in different - altitude areas , the thesis discusses and analyses influence on high - frequency channels of electric lines in high - altitude areas , test methods of high - frequency parameters of high - frequency channels of electric lines , theoretical - calculation methods of high - frequency parameters of high - frequency channels of electric lines and required primary factors of parameter design of high - frequency channels of electric lines , theoretically and practically 通過對不同海拔地區電力線高頻通道的實際測試,從理論和實際上討論分析了電力線高頻通道在高海拔地區的影響,電力線高頻通道高頻參數的測試方法,電力線高頻通道高頻參數的理論計算方法以及電力線高頻通道參數設計需考慮的主要因素。

The main works are as follows : firstly , we compare image enhancement in wavelet domain with that based on unsharp masking and indicate that there is intrinsic relation between them , namely they both enhance images by enhancing the high frequency coefficients . because after an image is decomposed in wavelet domain , every high frequency can be enhanced . however , if unshrap masking is used , only one high frequency channel is enhanced 本文主要研究了基于小波多分辨分析的圖像去噪和增強,主要工作如下: 1將反銳化掩模與基于小波多分辨分析的圖像增強進行了對比分析,指出它們之間存在著內在的聯系,即兩者都是對與圖像邊緣細節對應的高頻實行增強,而且指出前者只不過是后者的一個特例,因為小波分解后,多級尺度多個高頻通道可得到增,而反銳化掩模僅增強了一個高頻通道。

The images are specially enhanced by the hong kong observatory for your viewing . the enhancement is done by assigning different colours ( red , blue or green ) to images taken by different frequency channels on the satellite . these images are then suitably combined to bring out features of interest 為方便大家觀賞,圖像經香港天文臺特別處理,將衛星不同的頻道配以不同的顏色(紅、綠或藍) ,圖像經合成處理后,能突顯有趣的現像。

The images are specially enhanced by the hong kong observatory for your viewing . the enhancement is done by assigning different colours red , blue or green to images taken by different frequency channels on the satellite 為方便大家觀賞,圖像經香港天文臺特別處理,將衛星不同的頻道配以不同的顏色紅綠或藍,圖像經合成處理后,能突顯有趣的現像。

On the government s proposed frequency plan , mr . kwong said , “ without achieving frequency plan coordination with china , the government could not really decide on how many frequency channels are available for dtt 被問及有關政府建議的頻譜方案時,鄺氏稱:在香港沒有配合內地的頻譜規劃協調下,港府難以決定數碼地面電視可采用多少條頻道。

The ideal array would also be able to adjust the beam pattern so that it minimized interference from other users who were communicating on the same frequency channel 當其他用戶利用相同的頻道通話時,理想的陣列也必須能夠調整波束的場形,才能把訊號的干擾降到最低。

By using video compression technology , dtv enables several television programmes to be digitally combined before they are carried on the same frequency channel 藉著利用視頻壓縮技術,數碼電視能夠以數碼形式整合數個電視節目,然后以同一條頻道傳送。

The two users could be communicating with the adaptive array at the same time and on the same frequency channel , but their signals would not interfere with each other 透過適應型陣列通訊,兩位用戶可同時使用相同的頻道,但卻不會彼此干擾。

Ofta issues consultation paper on frequency channels inside in - building coaxial cable systems trial led by the information technology and broadcasting bureau ,攜手參與一項由資訊科技及廣播局督導的數碼地面電視技術測試。

This paper particularly introduces each circuit schematics and terminal signal processing methods . the radio frequency channel is analyzed in detail 對實現系統的各部分電路及終端的信號處理方法作了較為詳細的介紹。

Capacity series and radio - frequency channel arrangement and equipment main technical specifications for 100 1000mhz radio relay communication systems 100 1000mhz接力通信系統的容量系列波道配置及設備的主要技術要求

Calling a registered frequency when the automatic frequency selection function is not used . this example calls a frequency channel 01 不使用自動頻率選擇功能時,調出已登記的頻率。該例調出01頻道的頻率。

At present , using analogue technology , a whole frequency channel is needed for carrying one television programme 目前,本港利用模擬技術進行廣播,需要一整條頻道才足夠傳送一個電視節目。

In the running gear ( notebook computer , the 3g handset ) watch the cable tv or individual exclusive frequency channel 在行動裝置(筆記型電腦、 3g手機)收看有線電視或個人專屬頻道。

Each reader operates in a particular frequency channel of the authorised 2 . 45 ghz ism band 每一臺感應讀卡機都必須在不同的頻道下運作,不能有任何兩臺感應讀卡機使用相同頻道。