Quantization noise occurs when the bit number is too small 在比特數過少時會產生量化噪聲。
An analysis of quantization noise in fm transmitter at intermediate offset frequencies 對調頻發射機在中頻偏移下的量化噪聲分析
Dithering , which adds white noise to the input analog signals , may be used to reduce quantization noise 在輸入模擬信號中加入白噪聲,即抖動,可以降低量化噪聲。
Unsatisfactory lower resolutions are prone to cause a damaging loss of sound quality , referred to as quantization noise 不合格的低分辨率很容易損害音質,這就是量化噪音。
Furthermore , result of quantization noise shows that the effective resolution is 0 . 51og2m bits higher than its adc in the adc system 此外,高效混合電子科技大學博士論文濾波器組adc系統的量化噪聲研究結果表明其有效分辨率比其adc提高0 . 51ogzm比特。
But the most common noise is angle random walk , bias instability , rate random walk , rate ramp and quantization noise . in this paper , the random error model including the most common five noise as above 對常見的五種噪聲因素包括角度隨機游走、零偏穩定性、速率隨機游走、速率斜坡和量化噪聲建立了陀螺隨機誤差模型。
Sigma - delta modulator , combined with oversampling , effectively attenuate the in - band quantization noise in the output signal and enhance the signal - to - noise ratio ( snr ) through the shaping of the quantization error 調制器與過采樣相結合,對量化誤差噪聲進行整形,有效衰減輸出信號的帶內量化噪聲,提高了輸出帶內信噪比( snr ) 。
In this paper , optic gyro is viewed as the object of investigation and several aspects is investigated as follows . two important indexes - bias instability and scale factor were measured and investigated , including bias , its repetitiveness , temperature sensitivity , random walk coefficient and scale factor , its nonlinearity , asymmetry , repetitiveness . we make use of the allan variance method to separate the noise factors which affect the performance of the optic gyro , such as the angle random walk , bias instability , rate random walk , rate ramp , quantization noise , markov noise and sinusoidal noise 本文以光學陀螺為研究對象,開展了以下幾方面的研究工作:本文對光學陀螺性能的兩個重要指標?標度因數和零偏穩定性進行了較為詳細的研究,其中包括陀螺的零偏b _ 0 、零偏重復性b _ r 、零偏溫度靈敏度b _ t 、隨機游走系數rwc和標度因數k 、標度因數的非線性k _ n 、標度因數不對稱性k _ h 、標度因數重復性k _ r等等。
Frequency response , quantization noise , reconstruction error and its sensitivity to mismatch among adcs are studied at length in prqmf banks adc system , and the theoretic results include : ( 1 ) the distortion / aliasing functions of hybrid filter banks adc system is similar with that of switch capacitor filter banks adc system ; ( 2 ) for wide or narrow band input signal , the effective resolution of the two adc systems is 0 . 51og2m bits higher than their adc ; ( 3 ) reconstruction error ' s sensitivity to mismatch among adcs of the two adc systems is reduced effectively than time interleaved adc system 2對prqmf濾波器組adc系統的頻響、量化噪聲特性、重建誤差特性以及重建誤差對adc間的失配敏感性進行了理論分析研究,所得到的理論結果為: ( 1 )混合濾波器組adc系統與開關電容濾波器組adc系統的失真/混迭函數一致; ( 2 )無論輸入寬帶還是窄帶信號,這兩種adc系統的有效分辨率均比其adc提高了0 . 5log _ 2m比特; ( 3 )這兩種adc系統的重建誤差對其adc間的失配敏感性均明顯低于時間交織adc系統。