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| Psykoakustinen naamiointi× | Bark- ja Mel-asteikot× | |
|---|---|---|
| Tieteenala | Akustiikka | Akustiikka |
| Menetelmäperhe | Process / pipeline | Process / pipeline |
| Syntyvuosi≠ | 1961 | 1937 |
| Kehittäjä≠ | Eberhard Zwicker | Eberhard Zwicker, Stanley Smith Stevens |
| Tyyppi≠ | Perceptual model for audio systems | Perceptual frequency mapping |
| Alkuperäislähde≠ | Zwicker, E., & Scharf, B. (1965). Psychoacoustics: Facts and Models. Springer-Verlag. ISBN: 978-3540631644 | Zwicker, E. (1961). Subdivision of the audible frequency range into critical bands. Journal of the Acoustical Society of America, 33(2), 248–248. link ↗ |
| Rinnakkaisnimet | masking, temporal masking, frequency masking, auditory masking | bark scale, mel scale, critical bandwidth, perceptual frequency |
| Liittyvät | 5 | 5 |
| Tiivistelmä≠ | 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. | 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. |
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