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by vernhart

DSP Filter Range of applications DSP in the digital measurement system has many functions widely used, they can improve the sampling rate is limited due to frequency response, phase response, noise performance, bandwidth expansion and other indicators. Digital measurement system (such as digitizers, digital oscilloscope) of the DSP configuration shown in Figure 1, DSP on the A / D conversion of analog signals after the digital processing of data streams, the most commonly used features a fast Fourier transform (FFT), digital modulation , gain control, encoding / decoding in digital communication known computing, digital measurement systems in the most important function of the digital filter, DSP filter as a software filter can provide more excellent than the hardware filter characteristics. Digital measurement system can be measured using the waveform mathematics Finite Impulse Response (FIR) filters, infinite impulse response can also use (IIR) filter, DSP filters can be regarded as a modified wave shape of the mathematical procedure . As requested, we can design a specific filter, the waveform transform into any shape desired. Because the broad point of view, any system can handle signals as a filter filters, digital oscilloscope, for example, the DC input channel is a low-pass filter, 3dB roll-off point is its frequency bandwidth, in the case of AC input It is the band-pass filter. The main application of DSP filter as follows: