Known excitation signals sidestep the need for physically impossible impulses
Evidence
An engineering solution is then to use a known excitation signal x0(t) where the temporal length of sound is finite and still contains all the frequencies of interest. In this manner, the power of the excitation signal can be made much higher than the power of noise, and we can assume n(t) ≈0. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 491
Categorization
Category: Causal Relationships
Related
- Physically realizable systems cannot respond to future input values (similarity 0.86)
- Causality forces real systems to lack knowledge of future input (similarity 0.82)
- Digital audio’s rise made auditory perception knowledge essential to engineers (similarity 0.80)
- Sound’s physical force is negligible yet its informational effects matter greatly. (similarity 0.79)
- Vibration generates acoustic waves while sound radiation drains vibration energy (similarity 0.79)
- Psychoacoustics studies higher auditory functions where physiology is unknown (similarity 0.79)
- Loudspeaker signals can be computed as virtual microphone signals with first-order directional patterns. (similarity 0.78)
- Resonance can amplify desired sound or cause harmful machine vibration (similarity 0.78)