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| Keilanmuodostus× | Psykoakustinen naamiointi× | |
|---|---|---|
| Tieteenala | Akustiikka | Akustiikka |
| Menetelmäperhe | Process / pipeline | Process / pipeline |
| Syntyvuosi≠ | 1988 | 1961 |
| Kehittäjä≠ | Van Veen, Barry Buckley | Eberhard Zwicker |
| Tyyppi≠ | Directional audio array processing | Perceptual model for audio systems |
| Alkuperäislähde≠ | Van Veen, B. D., & Buckley, K. M. (1988). Beamforming: A versatile approach to spatial filtering. IEEE ASSP Magazine, 5(2), 4–24. DOI ↗ | Zwicker, E., & Scharf, B. (1965). Psychoacoustics: Facts and Models. Springer-Verlag. ISBN: 978-3540631644 |
| Rinnakkaisnimet | beamformer, spatial filtering, microphone array, phased array | masking, temporal masking, frequency masking, auditory masking |
| Liittyvät | 5 | 5 |
| Tiivistelmä≠ | Beamforming is a spatial signal processing technique that uses microphone arrays to selectively enhance sound from a desired direction while suppressing sounds from other directions. Formalized by Van Veen and Buckley in 1988, beamforming is fundamental to hands-free speech communication, hearing aids, sonar, radar, and spatial audio recording. It enables 'listening' with directional sensitivity despite using omnidirectional microphones, by exploiting time delays and phase differences between array elements. | 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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