Your Voice: An Inside View Ch. 5: Analysis
- What minimum frequency range is required to view the impact of both vowel and singer’s formants in a spectrogram?
- 0-5,500Hz
- What are the differences between narrowband and wideband spectrograms?
- Narrowband: divide the frequency spectrum into small segments so you can see harmonics and “time-related vocal events” like vibrato. (“Clearly shows all harmonics.”)
- Wideband: divide frequency into broad swaths, and you read the total bandwidth of formants easier. They also provide high resolution for time so you can sometimes see opening/closing cycle of the glottis. (“Shows the frequency range of formant zones.”)
- What types of analysis can be used to help a singer develop a chiaroscuro timbre?
- Anything that shows relative intensity of high and low frequency energy in the sound, esp. spectrograms, power spectra, and LPC.
- What type of analysis is best suited to help a singer develop an even vibrato?
- Narrowband spectrograms.
- What does realtime analysis feedback often work better for male voices than female voices?
- Men almost always sing in a frequency range that permits a large number of harmonics to be visible on the spectrographic display.
- What is the minimum sample rate required to analyze frequencies in the 0-11 kHz range?
- 22kHz
- Why is formant analysis with LPC often inaccurate?
- Accuracy is reduced/eliminated when the fundamental frequency exceeds the expected frequency range of F1.
- What is meant by the term “closed quotient?”
- The open and closing phase duration of the glottis, and it shows the percent of time the glottis is closed during each cycle. (The open quotient is the reciprocal.)
- Why is EGG analysis considered to be noninvasive?
- Electrodes are placed outside of the neck on either side of the larynx; everything is external.
- What is spirometry?
- The measurement of lung/breath capacity.
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