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distortion factor [2 records]
Record 1 - internal organization data 1994-04-27
Record 1, English
Record 1, Subject field(s)
- Audio Technology
Record 1, Main entry term, English
- distortion factor
1, record 1, English, distortion%20factor
proposal
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record 1, French
Record 1, Domaine(s)
- Électroacoustique
Record 1, Main entry term, French
- coefficient de distorsion
1, record 1, French, coefficient%20de%20distorsion
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Le coefficient de distorsion représente le dernier critère qualitatif de la Hi-Fi. Lorsque des fréquences parasites sont ajoutées involontairement à une source sonore originale (par exemple à cause d'une surcharge d'éléments électroniques), on parle de coefficient de distorsion. Ce dernier est en règle générale précisé sous forme de pourcentage. Il représente la part des fréquences parasites par rapport aux fréquences originales. Plus ce pourcentage est faible, meilleur sera l'enregistrement. Certains amplificateurs sont par exemple caractérisés par des coefficients de distorsion inférieurs à 1 %. 1, record 1, French, - coefficient%20de%20distorsion
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1981-01-07
Record 2, English
Record 2, Subject field(s)
- Radioelectricity
- Audio Technology
Record 2, Main entry term, English
- distortion factor
1, record 2, English, distortion%20factor
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
The [DFM] meter indicates the distortion factor, which is the ratio of the rms total distortion to the amplitude of the fundamental frequency, including harmonics. 2, record 2, English, - distortion%20factor
Record number: 2, Textual support number: 1 OBS
A common measurement is total harmonic distortion (thd) where the fundamental of a very low distortion sine-wave test signal is removed by a steep notch filter. The summed harmonics that remain are then measured as a voltage of the fundamental at the required test power of the amplifier. (When measured in this manner the term thd is not really correct since the distortion also has the amplifier noise added to it within the test passband. The correct term is distortion factor). (GRAEL, 1977, p. 326). 3, record 2, English, - distortion%20factor
Record 2, French
Record 2, Domaine(s)
- Radioélectricité
- Électroacoustique
Record 2, Main entry term, French
- taux de distorsion
1, record 2, French, taux%20de%20distorsion
correct
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
[Dans le Teac AS M50] les taux de distorsion restent très faibles quelle que soit la puissance, et (...) la décroissance des amplitudes dans l'analyse du spectre de distorsion par harmoniques est régulière. 1, record 2, French, - taux%20de%20distorsion
Record 2, Spanish
Record 2, Textual support, Spanish
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