So sánh phương pháp

	Beamforming	Truy vết tia âm thanh
Lĩnh vực	Âm học	Âm học
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1988	1979
Người khởi xướng	Van Veen, Barry Buckley	James Allen, David Berkley
Loại	Directional audio array processing	Computational room acoustics method
Công trình gốc	Van Veen, B. D., & Buckley, K. M. (1988). Beamforming: A versatile approach to spatial filtering. IEEE ASSP Magazine, 5(2), 4–24.	Allen, J. B., & Berkley, D. A. (1979). Image method for efficiently simulating small-room acoustics. Journal of the Acoustical Society of America, 65(4), 943–950.
Tên gọi khác	beamformer, spatial filtering, microphone array, phased array	ray tracing, geometric acoustics, image source method, sound ray propagation
Liên quan	5	5
Tóm tắt	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.	Acoustic ray tracing is a computational technique for predicting sound propagation in rooms by treating acoustic energy as rays that reflect specularly off surfaces. Formalized by Allen and Berkley in 1979 via the image source method, ray tracing is one of the most computationally efficient methods for room acoustic simulation, especially for early and mid-reflections. It is widely used in audio engineering, architectural acoustics, and interactive spatial audio for virtual environments.