audio frequency wave 中文意思是什麼

audio frequency wave 解釋
聲頻波
  • audio : adj. 【無線電】聽覺的，聲音的，音頻的；成音的。
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  • wave : n 〈美海軍〉女志願軍人〈見 WAVES 條〉。n 1 波浪；碎浪； 〈the wave（s）〉 〈詩〉海。2 波動；波狀...
  1. An electromagnetic wave of audio frequency produced by atmospheric disturbances such as lightning, having a characteristically decreasing frequency responsible for a whistling sound of descending pitch in detection equipment

    嘯聲干擾一種由於諸如閃電等大氣干擾而產生的音頻電磁波，具有典型的逐漸減弱頻率的特徵，該頻減引起了檢波設備中調逐漸下降的嘯聲
  2. For digital audio encoding and decoding modules, delta - sigma modulation is introduced and audio data, preambles with accessorial data are multiplexed according to the digital audio interface standard ; for carrier wave, pll frequency synthesizer is used ; for frequency modulation, voltage control oscillator is taken ; for demodulation, pll frequency discrimination is adopted

    調制方式，並按照數字音頻介面標準對音頻數據、同步字和附加信息進行通道復用;對于載波信號，採取鎖相環頻率合成技術手段;對于頻率調制，採用壓控振蕩器;對于解調電路，採取鎖相環鑒頻電路。
  3. Whether the audio - frequency electromagnetic wave exists is demonstrated at first

    摘要首先對音頻電波的存在質疑予以可能的論證。
  4. The prototype test results indicate : voltage mode and current mode ac - ac mode ac / ac converters with high frequency link have the advantages such as high frequency electrical isolation. simple topology, two - stage power conversions, high power density, bidirectional power flow, good line current waveform, no audio noise, high converting efficiency, and high input power factor etc. this kind of converter lay the key technical foundation on new type regulated sinusoidal ac power supply, electronic transformer, ac regulator, and wave converter etc

    試驗表明，這類變換器具有高頻電氣隔離、電路拓撲簡潔、兩級功率變換（ lfac hfac lfac ） 、功率密度高、雙向功率流、無音頻噪音、變換效率高、網側功率因數高等優點。為新一代正弦交流穩壓器、電子變壓器、交流調壓器、同頻波形變換器的實現奠定了關鍵技術基礎。
  5. The relative development mature ( uses the l wave band ) face the digital audio frequency service satellite numeral audio frequency broadcast technology beginning, because designs aims at the mobile subscriber, has solved the mobile subscriber receive numeral audio frequency broadcast problem well

    相對發展成熟的面向數字音頻服務的衛星數字音頻廣播技術（使用l波段） ，由於設計之初就針對移動用戶，較好地解決了移動用戶接收數字音頻廣播的問題。
  6. Then the antenna, radiating audio - frequency electromagnetic wave, is applied to teaching english phonetics system

    然後重點對教學用音頻發射天線做了設計分析。
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