Classify
发表于 2025-3-23 11:21:57
erspectives throughout the field of acoustics with over 100 Acoustics has a special relationship with signal processing. Many concepts in signal processing arise naturally from our general experience with sound and vibration and, more than in many other fields, acoustics is concerned with the acquis
单调女
发表于 2025-3-23 17:30:08
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上釉彩
发表于 2025-3-23 18:49:16
Acoustic Data Acquisitionsignal-to-noise ratio (SNR). Calibration for multichannel systems involves not just signal amplitude, but relative phase or time delay between channels, as well as signal leakage, or cross-talk, between channels.
加强防卫
发表于 2025-3-24 01:23:33
Beamforming and Wavenumber Processingion of the source distribution. Since the calculation plane cannot in theory approach the source further than the nearest point on the source, planar NAH works best for but is not restricted to sources with a planar geometry.
acheon
发表于 2025-3-24 02:24:22
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glacial
发表于 2025-3-24 07:31:24
Masking and Critical Bandscur: Components are not inaudible, but their loudness is reduced (c.f. Chapter 18). This chapter first introduces the frequent case of masking by one tone on another for simultaneous and successive presentation.
FIN
发表于 2025-3-24 11:11:50
Spectral Analysis and CorrelationT (fast Fourier transform). However, expressing a spectrum on a linear scale automatically restricts its frequency range, since the upper frequency decade occupies 90% of the scale and the upper two decades 99% of the scale.
BLOT
发表于 2025-3-24 17:04:01
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Orthodontics
发表于 2025-3-24 22:35:10
Digital Sequencessed for acoustic applications for years. Applications of Legendre sequences have also been reported. Digital sequences of other classes such as, e.g., binary Gold sequences and Kasami sequences have only recently found applications in acoustical system identification and characterization.
tendinitis
发表于 2025-3-24 23:23:49
Filtersthe filter to remove the signal energy (high attenuation); the passband consists of the band of those frequencies where we want a low attenuation. An example is an octave-band filter where the passband is one octave wide. The filter will have low attenuation at frequencies within the octave band and high attenuation for signals outside the band.