| Revista: | Revista mexicana de física |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000426118 |
| ISSN: | 0035-001X |
| Autores: | Manzanares Martínez, J1 Ham Rodríguez, C.I1 Manzanares Martínez, B2 |
| Instituciones: | 1Universidad de Sonora, Departamento de Investigación en Física, Hermosillo, Sonora. México 2Universidad de Sonora, Departamento de Fisica, Hermosillo, Sonora. México |
| Año: | 2018 |
| Periodo: | May-Jun |
| Volumen: | 64 |
| Número: | 3 |
| País: | México |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico, teórico |
| Resumen en inglés | In this work, we present a study to determine the transit times and frequencies of pulses by using the Short-Time Fourier Transform (STFT). We consider the case of an acoustic signal composed of five Gaussian pulses that have a high overlapping in time but oscillate at different frequencies. We proceeded in three steps. First, we illustrate how the STFT calculated through a sliding window produces a spectrogram where transit time is on one axis and frequency on the other. Second, we derive an exact analytical solution of the STFT to develop an intuitive vision of the mathematical technique. Finally, in a third step, we present an experiment to demonstrate that the STFT is a useful technique to characterize a complex acoustical signal |
| Disciplinas: | Física y astronomía |
| Palabras clave: | Física, Tiempo de tránsito, Tiempo de vuelo, Pulsos gausianos |
| Keyword: | Physics, Transit time, Time of flight, Gaussian pulses |
| Texto completo: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
