voice activity detection 中文意思是什麼

voice activity detection 解釋
話音活動檢測
  • voice : n 1 語聲；嗓音；鳴聲；〈比喻〉呼聲。2 發聲力，語言（力）；想說話的慾望。3 （學說、主義等的）代言...
  • activity : n. 1. 活動；活躍；動作；活動力；能動性。2. 活性；放射性。3. 機能，功能。4. 〈美國〉機構。5. 〈pl. 〉 活動范圍。
  • detection : n. 1. 探知；發現，發覺；敗露。2. 【化學】檢定，檢查；【電訊】檢波。
  1. Based on all these above, the results of main research are as follows : ( 1 ) a voice activity detection ( vad ) algorithm based on dct band - partitioning spectral entropy is proposed

    本文以此為基礎，並取得了如下研究成果: （ 1 ）提出了基於dct分帶譜熵的語音檢測演算法。
  2. Voice activity detection method based on gray correlation analysis algorithm

    一種基於灰關聯分析法的語音激活檢測演算法
  3. Section ii describes the design approach and implementation of speech module on mcf5249 coldfire core. the speech codec optimizes g. 729a codes and added voice activity detection of g. 729b to save bandwidth ; the implementation of acoustic echo cancellation uses nlms algorithm and it can reduce echo though designing adaptive fir filter and speech detector ; the dtmf and cpt generate signal using two second order digital sinusoidal oscillators and detect signal by picking up the frequency information. but only get the frequency information is not enough in cpt detector, this thesis introduces a method

    其中對語音編解碼器的設計採用優化g . 729a代碼達到設計要求，並在此基礎上加入g . 729b的靜音檢測模塊，以進一步降低網路傳輸帶寬;對回聲消除器的設計採用nlms演算法，通過設計自適應fir濾波器和語音檢測器達到回聲消除目的;對雙音多頻設計，信號發生端採用構造靜態參數表並通過二階正弦振蕩器產生信號，信號檢測端提取頻率信息以檢測信號;對呼叫進程音設計，除了類似雙音多頻的信號發生及頻率檢測設計外，還需要檢測信號持續時間，作者設計了一種基於匹配狀態表的方法以檢測信號持續時間。
  4. The speech processing module can be divided into two parts, the first part includes speech compression, voice activity detection and echo cancellation module, which improve speech quality ; the other part includes dtmf and cpt module, which generate and detect some necessary telephony signal in the communication. this thesis is organized as follows

    該語音處理模塊由兩部分組成，一方面是對語音的處理，包括語音壓縮模塊、靜音處理模塊和回聲消除模塊，主要為了提高voip的語音質量;另一方面是對電話通信的控制和處理，包括雙音多頻模塊和呼叫進程音模塊，主要為了產生和檢測ip電話通信中一些必須的電話信號。
  5. To improve the speech quality, it is necessary to adopt such speech processing techniques like speech compression, voice activity detection, echo cancellation, jitter buffer and so on

    為了提高語音質量，需要採取一系列的語音處理技術，主要包括語音壓縮技術、靜音處理技術、回聲消除技術、抖動緩沖技術等。
  6. Voice activity detection based on wavelet transformation

    基於小波變換的語音激活檢測
  7. Voice activity detection va

    話音活動檢測
  8. Voice activity detection ad

    話音活動檢測
  9. Tdma third generation wireless - minimum performance standards for acelp voice activity detection

    時分多址聯接第三代無線電通信. acelp話音活動性檢測的最低性能標準
  10. The system realization mainly includes the realization of recording, playing, coding - decoding, compressing and rtp of the audio as well as video capturing, replaying, etc. those problems of audio - compressing technology, audio - delaying, audio - jitter, echoing and voice activity detection which influence the audio quality have also been discussed and dealt with

    其中系統實現主要包括語音的錄制、播放、編解碼、壓縮、實時傳輸協議等的實現以及視頻採集、回放等。對影響語音質量的語音壓縮技術、語音時延、語音抖動性、回聲以及靜音等問題進行了探討和處理。
  11. On the basis of analyzing noise property, this thesis emphasizes on two noise estimation methods : classical method based on voice activity detection ( vad ) and the latest method based on optimal smoothing and minimum statistics. some improvements have been proposed to enhance the vad ’ s performance based on lpc cepstrum coefficients

    2 .在分析噪聲特性的基礎上，重點研究了基於語音活性檢測和基於連續更新噪聲譜的兩種噪聲參數估計方法，並提出了將能零積的思想應用到基於lpc倒譜系數的語音活性檢測演算法中。
  12. Chapter 3 investigates the capacity improvement in cdma multi - cellular system with base - station smart antenna. we consider the effects of multipath interference, thermal noise, path loss, processing gain and voice activity factor. and introduces multiuser detection combined with smart antenna

    考慮了多徑干擾、熱噪聲、路徑損耗、處理增益和語音激活因子的影響；並介紹了與智能天線技術相結合的多用戶檢測技術。
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