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NimoTsai

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    • Dears, My name is NimoTsai. I am a master student of EE in NSYSU, Taiwan, Asia. Could you help me solve the problem: Goertzel algorithm: amplitude v.s. magnitude! I use the Goertzel filter to catch 2nd harmonic current written in DSP28335. And all the results of the 2nd value are proportionally matching the gain of N/2, i.e., for example, the input current is 0.5A(peak) and then the value of catching by that algorithm is 83(N=334,83/(N/2)=0.5A)shown in the DSP's watch window. So my question is that why the value shown in DSP shoult multiply the gain "N/2" to be the real peak value? Thank you Best wishes.

    • Dears, My name is NimoTsai. I am a master student of EE in NSYSU, Taiwan, Asia. Could you help me solve the problem: Goertzel algorithm: amplitude v.s. magnitude! I use the Goertzel filter to catch 2nd harmonic current written in DSP28335. And all the results of the 2nd value are proportionally matching the gain of N/2, i.e., for example, the input current is 0.5A(peak) and then the value of catching by that algorithm is 83(N=334,83/(N/2)=0.5A)shown in the DSP's watch window. So my question is that why the value shown in DSP shoult multiply the gain "N/2" to be the real peak value? Thank you Best wishes.