Comparar métodos
Examine os métodos selecionados lado a lado; as linhas que diferem ficam destacadas.
| Escalas Bark e Mel× | Mascaramento Psicoacústico× | |
|---|---|---|
| Área | Acústica | Acústica |
| Família | Process / pipeline | Process / pipeline |
| Ano de origem≠ | 1937 | 1961 |
| Autor original≠ | Eberhard Zwicker, Stanley Smith Stevens | Eberhard Zwicker |
| Tipo≠ | Perceptual frequency mapping | Perceptual model for audio systems |
| Fonte seminal≠ | Zwicker, E. (1961). Subdivision of the audible frequency range into critical bands. Journal of the Acoustical Society of America, 33(2), 248–248. link ↗ | Zwicker, E., & Scharf, B. (1965). Psychoacoustics: Facts and Models. Springer-Verlag. ISBN: 978-3540631644 |
| Outros nomes | bark scale, mel scale, critical bandwidth, perceptual frequency | masking, temporal masking, frequency masking, auditory masking |
| Relacionados | 5 | 5 |
| Resumo≠ | Bark and Mel scales are perceptual frequency scales that map physical frequency (Hz) to perceived pitch and auditory perception. Formalized by Zwicker (Bark, 1961) and Stevens (Mel, 1937), these non-linear scales reflect how the human ear processes sound. Bark scale divides hearing into 24 critical bands; Mel scale models pitch perception. Both are essential for audio feature extraction, speech processing, and designing audio systems that align with human hearing. | Psychoacoustic masking describes how the human auditory system suppresses the perception of weak sounds in the presence of stronger sounds. Formalized by Eberhard Zwicker in the 1960s, masking is a fundamental phenomenon in hearing and the basis for perceptual audio coding (MP3, AAC, OPUS). Masking occurs both in frequency (spectral masking) and time (temporal masking), and understanding these effects enables efficient audio compression and realistic sound design. |
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