Exam 2 Part 9 Flashcards
The more sampling we do the _______ it represents the signal better
Better
Giving the numbers to the signal
Quantization
Provides objective and noninvasive analysis of vocal function
Acoustic measurements
What are the 5 acoustic measurements
Fundamental Frequency Intensity Perturbation measures Ratio of signal (i.e., harmonic) energy to noise Spectral or Cepstral features
Rate of vibration of the vocal folds and is expressed in Hertz (Hz) or cycles per second (cps).
Fundamental frequency
Acoustic correlate of pitch
Fundamental frequency
Psychoacoustic correlate of fundamental frequency
Pitch
What is the DRIVING source of voice
Positive subglottal pressure
What the SOUND source of voice?
Changing glottal airflow
Perceptual (or psychoacoustic) correlate of Intensity
Loudness
Acoustic correlate of loudness
Intensity
What types of intensities do we use clinically?
Habitual, intensity range
What instruments do we derive intensity measures?
Sound level meters, acoustic analysis programs, aerodynamic measurement devices
Average intensity
Habitual intensity
Provides a thorough description of a patient’s physiologic limits of frequency and intensity, useful for monitoring vocal range in professional voice users
Phonetogram
A 2 dimensional figure that has time on the x-axis, y-axis can be any amplitude (intensity, frequency, energy, etc.)
Wave form
A 2 dimensional figure that has frequency on the x-axis, can be any amplitude on y-axis (typically intensity); can understand amplitudes of any harmonic
Spectrum
Jitter and shimmer are _____ form based measures
Wave-form
3 dimensional figure that has an X (time), Y (fundamental frequency), and Z axis (intensity)
Spectrograms
What are 2 ways we analyze the acoustics of voice?
Time-based measures, frequency based measures
