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Implante de tubo valvulado bioprtese "stentless" em posio artica: estudo experimental em ovinos
| Content Provider | Semantic Scholar |
|---|---|
| Author | Santos, Paulo César Moreira Gerola, Luís Roberto Pessa, Clodualdo J. N. Branco, João Nelson Rodrigues Casagrande, Ivan Sérgio Joviano Buffolo, Enio |
| Copyright Year | 2002 |
| Abstract | A method for performing an active profiling of the sound emitted by a vehicle engine including the steps of injecting second acoustic waves (MW), which are able to combine with the first acoustic waves (EW) in a merge point in said primary propagation path and to generate third resulting acoustic waves (RW); and generating a driving signal for the diffuser by regulating the amplitude of harmonics of the driving signal (SP) as a function of reference acoustic waves and of a workpoint of the engine, calculating equalization coefficients (α1, . . . , αM) to be applied to the amplitudes of said harmonics of the driving signal (SP) via a self-tuning procedure, and comparing the reference acoustic waves (TW) with a simulation (SRW) of the resulting waves. The simulation (SRW) is obtained by applying to a simulation of the second acoustic waves a model of the secondary propagation path. |
| File Format | PDF HTM / HTML |
| DOI | 10.1590/S0102-76382002000100013 |
| Alternate Webpage(s) | http://scielo.br/pdf/%0D/rbccv/v17n1/9167.pdf |
| Alternate Webpage(s) | https://doi.org/10.1590/S0102-76382002000100013 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
