1. Harmonic distortion is usually expressed as a percentage.

2. Intermodulation A consequence of some forms of harmonic distortion is that a strong signal modules a weak one.

3. The effect is termed harmonic distortion.

4. Stereo channel separation of 50 dB and low harmonic distortion for testing FM stereo receivers.

5. The SPEC-4 actually had lower total harmonic distortion and lower intermodulation distortion than its more expensive brother.

6. A magnitude of a third harmonic distortion of the waveform sequence can be used to measure distortion in the output.

7. In order to reduce total harmonic distortion factor of the inverter's output voltage, adding LC filter to inverter's output is a simple and practical method adopted extensively currently.

8. For public distribution system the total harmonic distortion is a clear measure of supply quality.

9. Reducing the total harmonic distortion (THD) of the magnet current in the parallel resonant network is the key technique for the magnet current tracking accuracy.

10. The total harmonic distortion ( THD ) is written as the following expression.

11. The total harmonic distortion of phase current is 5.2% in the proposed control, which is less than 10.2% when the speed and current closed-loop control is used.

12. To achieve low harmonic distortion and fast response, the single-phase full-bridge power converter adopts sinusoidal pulse-width modulation (SPWM) unipolar switching technique.

13. A new method for measuring the total harmonic distortion of ultra low frequency signa1 by means of FFT algorithm is presented and the measuring error is analysed in this paper.

14. The dynamic range and total harmonic distortion of digital recording system are different from analog recording system.

15. The definitions of both harmonic distortion and total distortion are introduced.

16. We observed that the total harmonic distortion ( THD ) increases due to non - linearity in the triangular wave.

17. In an audio amplifier, the kind of distortion which causes severe problems is harmonic distortion.

18. As the non-linear nature of the traditional transformer, the input line currents have significant harmonics and high total harmonic distortion (THD).

19. Active PFC techniques have been researched systematically and used widely in the recent twenty years because of high power factor (PF) and low total harmonic distortion (THD).

20. The experimental results verify that the prototype can make the power factor reach over 0.99, and make total harmonic distortion reach lower than 7%.

21. As the development and application of microcomputer and single-chip microcomputer, the cost of harmonic distortion meter decreases rapidly.

22. The turns of the transformer additional winding should be determined from the trade-off between lower voltage across the energy-storage capacitor and lower total harmonic distortion of input current.

23. It affects the SNR signal - to - noise ratio and the THD ( total harmonic distortion ) of a conversion.

24. Faraday are incorporated into the ultra - low distortion motor, further reducing? harmonic distortion as much as 20 dB.

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25. Both the computer simulation and model experiment prove that it can reduce the total harmonic distortion of the harmonic current from 30.53% to 9.45% and make the waveform approach to sine wave.

26. To overcome this problem, negative feedback is applied to reduce the harmonic distortion.

27. First , the low-frequency instability and its effect on total harmonic distortion are observed via numerical simulation as the output power increases.

28. It deeply analyzes composition of noise and its effected factor, and introduces how to measure the signal-to-noise ratio, total harmonic distortion and effective number bits of the ADC.

29. An active power factor corrector (PFC) is used to improve the input power factor (PF) and reduce the total harmonic distortion (THD) of the input current.

30. It can be seen from model experiment that the Total Harmonic Distortion (THD) of the current in the three-phase rectification circuit can be reduced from 30% to about 10%.

31. Besides, the resonant condition is monitored by minimizing the total harmonic distortion(THD) of the voltage applied to the device terminals.

32. With the rapid development of power electronics, it becomes a trend to take advantage of power electronics devices to control grid's power quality (including harmonic distortion).

33. The device can calculate transient harmonics (up to 50 orders) of any part of data wave, give the total harmonic distortion, each harmonic ratio and each harmonic value.