Deutsche Version |
Fill out the gray box and click at the respective calculation bar under it. Don't forget to enter the minus sign with the distortion attenuation in decibels. |
The distortion factor is always less than 1 or less than 100%, therefore, the Total harmonic distortion must always a be negative dB value. Total harmonic distortion: in dB. Input k in percent. Total harmonic distortion (THD) in %. Input ak in dB with a minus sign. To calculate the distortion factor, there are two different formulas: (Distortion att. up to 5%) × 100 (THD) The distortion factor was historically introduced before the THD-value and the ratio of the effective value of all harmonics to the RMS value of all harmonics plus fundamental frequency, that is the total signal. The THD is the ratio of RMS signal of all harmonics to the RMS of the fundamental signal. |
The distortion factor is always smaller than 1 or less than 100 %, therefore the distortion attenuation must be a negative dB value. Distortion attenuation: in dB. Input k in percent. Distortion factor THD: in %. Input ak in dB with a minus sign. |
k | k (%) | ak | Number | Percent | dB |
1 | 100 | 0 |
0.5 | 50 | −6 |
0.2 | 20 | −14 |
0.1 | 10 | −20 |
0.05 | 5 | −26 |
0.02 | 2 | −34 |
0.01 | 1 | −40 |
0.005 | 0.5 | −46 |
0.002 | 0.2 | −54 |
0.001 | 0.1 | −60 |
0.0005 | 0.05 | −66 |
0.0002 | 0.02 | −74 |
0.0001 | 0.01 | −80 |
0.00005 | 0.005 | −86 |
0.00002 | 0.002 | −94 |
0.00001 | 0.001 | −100 |
in dB
where V2 to Vx are the amplitudes of harmonics to the fundamental amplitude V1.
Enter simply the value to the left or the right side. The calculator works in both directions of the ↔ sign. The distortion attenuation in dB must begin with a minus sign. |
Don't forget the minus sign, when entering the distortion attenuation in decibels. |
Addition of harmonic distortion attenuation of multiple devices.
Overtones, partials and harmonics from fundamental frequency Keyboard, frequencies = Naming of musical notes, piano keys Frequency domain of the musical instruments and voices |
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