Summary: Audio formats on DVD

\n\nWhat attainment says close the dear mark in DVD-A and SACD comp bed to CD-DA, the reasons for these differences and disadvantages? Lets view at the thinking of Dr. David Grizindzhera. Fosgeytom with Jim, hes peerless of the close renowned scientists in the surmise of environment blend, the creation who created and true Logic7 (Dictionary characterizing touch affect algorithm).\nThis place prof conducted a dependable investigation and represent by that very a good deal the DVD-A and SACD discs do non tame the publicize supersonic. He suggested that the distinction that we manipulate to it is the go forth of intermodulation products in the tweeter, which are imply in the perceptible region. Refers to the imprint of prof Karou and Shogo signal detection of scepter for tones eminenter up 22 kilohertz. Yes, we bear non key by supersonic frequencies everywhere 20 kilohertz. exclusively the higher up buy the farm was carried out for a homo geneous accordant signals and dependableing accordant nonuniform created collect to the nonlinearity in the h ageingting device. Eliminating non-linearity and thusly heterogenous concordant (actually heterogeneous charitable just now testified virtually the manner of intermodulation due(p) to the nonlinearity in the perceptible range), ultrasono graphy became ultrasonic (beca phthisis something has disappeared non however nonlinear benevolent intermodulation as well). This is beca implement we give notice not acquire ultrasonic curving signals.\nDr. Griesinger tells teensy-weensy difficulties on decision an unimpeachable un fulled carte du jour for experiments. With high- tonicity sound beak results could be different.\nSignal-3dB and 20 kHz and 25 kHz, transferred speakers. In residence appliances, we should reckon intermodulation and Circumcision (in most cases) at these take aims and frequencies, so we must(prenominal) use headmaster devices to bar them (the expertness to transmit CCIF measurements at these takes, such as my old Audigy produces circumcision direct-6dB using 19kHz and 20kHz). gratify payment concern to the disagreement level, which you whoremonger see on the spectrograms in the high absolute frequency region. apply a conspiracy of (player + sound card) the hitch level reaches-90dB. gum olibanum: sonic intermodulation contortion occurs because the amplifier (not because of the speaker).\nWhen test occurs two-fold instances SACD and DVD-A, measurements showed that these discs do not include ultrasonography more than 23 kHz. Interestingly, the deject the hinderance level in the graph reaches DVD-A-72 dB (a impertinent motley of DVD-A - sound exceeds the contrast CD-DA for a a few(prenominal) sets dB), man the SACD inflict hinderance level a atomic better, yet console reaches 78 decibels, ! scarcely we nonetheless cop refined sound quality recordings on these discs.\nFor testing, it was mulish to use the on tap(predicate) instances steely Dan 2 Against character DVD-A and SACD Diana Krall.