Me ha llamado la atención leyendo en audioplanet esta página: http://www.servobass.com/Project-XF18.html
Sobre todo en términos de THD el cambio que produce. Acting? xD
Sobre todo en términos de THD el cambio que produce. Acting? xD
Taboadax escribió:Me ha llamado la atención leyendo en audioplanet esta página: http://www.servobass.com/Project-XF18.html
Sobre todo en términos de THD el cambio que produce. Acting? xD
Hay estudios sobre la audibilidad añadiendo armónicos a una señal pura y éstos tienen que ser muy intensos para que apreciemos la diferencia; más aún tan abajo en frecuencia como muestra parte de dichas gráficas
Ya conoces el blind test de axiomaudio bajo auriculares con tonos puros (como en el enlace que has citado, donde no veo blind test por ningún lado pero si propaganda del servo
) :http://www.axiomaudio.com/distortion
Otros enlaces:
http://gedlee.com/downloads/Distortion_AES_I.pdf
The current trend seems to be to dismiss nonlinear distortion, or at least to lessen it's importance. Much of this comes from the studies on harmonic distortion, which generally show it to be not particularly audible. Read Dr. Geddes' comments on multiple DIYaudio posts. Or, consider the quote below from Sean Olive. He's referring to the generally poor harmonic distortions results in some ipod audio docking stations--
Harmonic Distortion Measurements
Harmonic distortion (second and third harmonic only) measurements were made in the anechoic chamber at a SPL of 95 dB. The distortion levels of the harmonics are plotted along with the fundamental for each of the Music Stations in slide 18. Note that the levels of the harmonics have been raised 20 dB for the sake of clarity.
All of the Music Stations exhibited relatively high distortion at low frequencies below 100 Hz, with generally less harmonic distortion at higher frequencies. Music Station B differentiated itself by having higher levels of second and third harmonic distortion between 100 Hz to 1 kHz. Music Station C had the lowest distortion even though it received the lowest preference and distortion ratings from the listeners.
In conclusion, the harmonic distortion measurements of the Music Stations are not particularly good at predicting listeners’ distortion ratings, or overall preference in sound quality. This confirms many previous loudspeaker studies that have reported that harmonic distortion measurements are poor predictors of listeners’ overall impression of the loudspeaker. This can be explained by the fact that the distortions are often below the threshold of audibility, and the measurements themselves do not account for the masking properties of human hearing.
http://www.audioheuristics.org/primers/ ... atters.htm
Un saludete
