- 定差调制
- 增量调制
- delta: n. 1.希腊语字母表第四字母〔Δ，δ〕。 2.(河流的 ...
- modulation: n. 调整，调节；(声调的)抑扬，变化；【音乐】转调，变 ...
- adaptive delta modulation: 适应三角调变; 自适应δ调制; 自适应增量灯; 自适应增量调制
- adaptive delta modulation adm: 自适应增量调制
- adm adaptive delta modulation: 自适应增量调制
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delta modulation中文什么意思
- 定差调制
- 增量调制
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例句与用法
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- Sigma delta modulation frequency synthesis is an advanced technology that applies in pll ( phase - locked loop ) frequency synthesizer , which could transform the spurs created by fractional - n synthesizers into phase noise that could be filtered by inherent low - pass identity in pll
此技术应用-调制将锁相环频率合成器中分数分频器产生的相位杂散转化为相位噪声,通过锁相环本身低通滤波特性滤除,从而使用单环即可获得很高频率分辨率和极低的相位杂散。 - This paper focuses on the analysis of sigma delta modulation theories such as mathematics models , noise shaping characteristics , etc . combined with traditional pll fractional - n synthesizers structures , a project of sigma delta modulator is proposed , and the algorithmic analysis is implemented by fpga
本文在阐述-调制理论,分析其数学模型,噪声整形特性基础上,结合传统小数分频合成器,提出了-调制小数分频锁相环频率合成器实现方案,及其在fpga里的调制器算法。 - In recent years , oversampling techniques based on sigma - delta modulation are widely used to implement the interfaces between analog and digital signals in vlsi systems . this kind of technique can offer numerous advantages for the realization of high - resolution analog - to - digital converters ( adcs ) , and be insensitive to process variations . in other ways , the architecture is power - efficient means of implementing adcs
近年来,基于sigma - delta调制器的过采样技术被广泛的应用于模拟和数字接口电路,这种技术对实现高精度模数转换器有较多优势,同时可以降低系统功耗,但对工艺要求不是很苛刻,而且采用合适的低电压,以保证电路在低电压下可靠的工作。 - We made an improvement in overcoming the defects in speech signal adaptive delta modulation ( abbr . adm ) , such as slope overloading and grain noise . in this method , numerical sliding average filtering was used for filtering decoding speech signal . experiments and analyses indicate that the method makes waveforms in good agreement between the decoding of adm and the original pulse coding modulation ( abbr . pcm ) signal , and considerably improves , the playback speech quality in naturalness , legibility and under standability
针对语音信号自适应增量调制( adm )方式中斜率过载和颗粒噪声缺点，提出了一种改进方法，它利用滑动平均方法对解码后的信号进行数字滤波.试验和分析表明，该方法使解码后的信号波形与原脉冲编码调制( pcm )波形具有很好的一致性，使再生语音质量在自然度、清晰度和可懂度方面比改进前均有较大提高 - Our object is an intermediate frequency modem of a software defined radio transmitter - receiver of multi - service , multi - modulationmode and multi - processdatarate . first , related software defined radio theory is introduced ; later , channels of transmitter - receiver are designed with consideration of data format , modulation , fec , interwaving . and scrambling ; emphasis is placed on theory and implementation of an audio compression algorithm cvsd ( continuous variable slope delta modulation ) and a fec technique convolutional coding - decoding
本文首先介绍了相关的软件无线电理论；然后完成了包括数据格式，调制方式，纠错码方式，交织器和扰码器等部分的中频调制解调器通道设计；接着着重介绍了系统中使用的音频压缩算法cvsd (连续可变斜率增量调制)的原理和实现，以及作为前向纠错码的卷积码编码理论和编解码的高效实现。