Upgrade to remove ads
Only $35.99/year

Acoustics Exam Two (Topic 6)

Terms in this set (12)

Waveform is what kind of domain?
Time domain
Spectrum is what kind of domain?
Frequency domain
Amplitude Spectrum
Plot of amplitude as a function of frequency
Phase Spectrum
Phase as a function of frequency
Line Spectrum vs. Continuous Spectrum
Continuous spectrums include all frequencies and indicate the amplitudes for all frequencies and is drawn horizontally, a pulse or a click sound and a tone burst if it is finite can be displayed with this spectrum. Line spectrums indicate the amplitude and phase for each individual frequency and is drawn vertically, a pure tone (infinite) can be displayed with this spectrum, assuming it was a periodic signal.
Complex Sound Waves
Complex sound wave is any sound wave that is not sinusoidal.
Fourier's Theorem
Complex sound waves are composed of a series of sinusoidal waves that may differ in their dimensions. and can be mathematically dissected into their constituent sinusoidal components
Fourier Analysis
A process to derive the series of sinusoidal components from a complex sound to determine their dimensions (decompose a signal into the frequencies that make it up). That is, a sound signal in the time domain (waveform) is transformed into a spectrum (frequency domain)
Periodic Sound Waves
Any sound wave that repeats itself at any regular interval over time, all simple waves are periodic.
Does a pure tone have a periodic sound wave?
A pure tone is a simple wave meaning it is a periodic sound wave.
Complex Periodic Wave
A type of complex sound waves, of which their sinusoidal components satisfies a basic mathematical requirement - harmonic relation
Harmonic Relation
The frequencies of all sinusoidal components of a complex wave are integer multiples of the lowest frequency (fundamental frequency).
Other sets by this creator