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Low delay maximally flat in passband and equiripple in stopband (MFER) FIR Digital Differentiators (DDs) are known to have high differential accuracy with low delay. The transfer function is defined as the subtraction of the stopband function from the passband function. The passband function and the stopband function realizes flatness characteristics and equiripple characteristics, respectively. However,...
The low-pass maximally flat FIR digital differentiator (low-pass MFDD) provides high accurate differentiation around the frequency ω = 0, while it reduces noises in the high frequency. Recently, authors proposed the low delay low-pass MFDD, but it can not get the steep cutoff characteristic. This paper proposes a design method of the low delay low-pass FIR digital differentiators having the flat passband...
This paper describes a general expression of the transfer function of the low-pass maximally flat FIR digital differentiator (low-pass MFDD). The low-pass MFDD provides extremely high accurate differentiation around ω = 0. Simultaneously, it can reduce noises in the high frequency. However, the conventional design method of the low-pass MFDD is designed with the linear phase characteristics. By contrast,...
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