主要内容

信号操作

对信号执行延迟、重新排序、重采样和加窗操作

您可以使用 DSP System Toolbox™ 中的模块和 System object 执行信号操作,如速率转换、卷积、数字上变频和数字下变频、相位提取、DC 分量去除、峰值定位、信号填充和延迟加法。

对象

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dsp.DigitalDownConverterTranslate digital signal from intermediate frequency (IF) band to baseband and decimate it
dsp.DigitalUpConverterInterpolate digital signal and translate it from baseband to IF band
dsp.FarrowRateConverterPolynomial sample rate converter with arbitrary conversion factor
dsp.SampleRateConverterMultistage sample rate converter
dsp.DCBlocker阻断输入信号中的 DC 分量(偏移量)
dsp.ParameterSmootherSmooth input parameters using exponential smoothing (自 R2024a 起)
dsp.PhaseExtractorExtract the unwrapped phase of a complex input
dsp.PhaseUnwrapperUnwrap signal phase
dsp.ZeroCrossingDetectorDetect zero crossings
dsp.DelayDelay input signal by fixed samples
dsp.VariableFractionalDelayDelay input by time-varying fractional number of sample periods
dsp.VariableIntegerDelayDelay input by time-varying integer number of sample periods

模块

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DownsampleResample input at lower rate by deleting samples
Digital Down-ConverterTranslate digital signal from intermediate frequency (IF) band to baseband and decimate it
Digital Up-ConverterInterpolate and translate digital signal from baseband to intermediate frequency (IF) band
Farrow Rate ConverterPolynomial sample-rate converter with arbitrary conversion factor
InterpolationInterpolate values of real input samples
RepeatResample input at higher rate by repeating values
Sample and HoldSample and hold input signal
Sample-Rate ConverterMultistage sample-rate conversion
UpsampleResample input at higher rate by inserting zeros
Convolution两个输入项的卷积
DC BlockerBlock DC component
DetrendRemove linear trend from vectors
OffsetTruncate vectors by removing or keeping beginning or ending values
PadPad or truncate specified dimension(s)
Parameter SmootherSmooth input parameters using exponential smoothing (自 R2024a 起)
Peak FinderDetermine whether each value of input signal is local minimum or maximum
Phase ExtractorExtract the unwrapped phase of a complex input
UnwrapUnwrap signal phase
Window FunctionCompute and apply window to input signal
Zero CrossingCount number of times signal crosses zero in single time step
Variable Integer Delay按固定或可变采样周期延迟输入信号
Variable Fractional DelayDelay input by time-varying fractional number of sample periods

主题

基于采样和基于帧的处理

速率转换

信号操作

延迟和时滞

可变大小信号支持

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