audio-spectrum 中文意思是什麼
audio-spectrum
解釋
可聽聲譜-
At the other end of the technological spectrum, the american bible society produces an audio device, powered by a battery or hand crank and no bigger than a couple of cigar boxes, that can broadcast the bible to a crowd of a hundred
而在技術頻譜的另一端，美國聖經公會生產了一種音頻設備，採用電池或手搖發電，不過兩個雪茄盒大小，就能向上百的人群播放聖經。 -
Our experiment results have shown that the novel audio watermarking scheme in spectrum domain can achieve imperceptibleness and robustness
實驗結果表明，該方法具有良好的不可感知性和魯棒性。 -
Experiments show that, when use msp430f149 audio sensor to identify vehicles that contain plane, tank, truck and so on by time domain features and two - level f - ratio, the recognition rate is 82. 1 % ; when use both msp430f149 audio sensor and arm9 sensor to identify vehicles, and the recognition rate is much better than the original system and msp430f149 audio sensor. line spectrum of power spectra and 3 / 2 spectrum is used as frequency features on arm9 sensor, and it is caught by narrow - band bandpass filter
實驗證明，在主頻為8mhz的msp430f149感知器上，採用基於時域特徵和二階f比的識別演算法，能夠實時地完成對飛機、坦克、卡車等交通工具的識別;將msp430f149感知器與基於arm9的高端感知器配合使用，且高端感知器採用功率譜線譜或3 / 2維譜線譜作為頻域識別特徵，能夠實時的對各類交通工具做更高性能的識別。 -
At last the audio - visual filter can get and regroup the pcm audio data which transformed into the time - frequency signals by the fft. at the same time the power spectrum can be displaying on the windows by using the win32 api functions. finally the test of this system shows the processes about transport stream of receiving in the collecting card, pushing in the bridge, separating in the parser, displaying in the audio - visual filter are satisfied with the data rata at the server
音視頻效果filter內部通過獲取解碼后的pcm格式數據，並利用緩沖管理器對這些數據進行重新分組，然後對分組后的數據進行fft變換將時域信號變換到頻域之中，同時對變換后的數據作數學處理后得到其功率值，最後利用api畫圖函數對這些功率值進行了實時的特殊效果顯示。 -
Spread - spectrum audio watermarking algorithm in dct domain based on convolutional codes
域音頻擴譜水印演算法
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