Simple Amplitude‐Stabilized Twin‐T Audio Oscillator

1960 ◽  
Vol 31 (2) ◽  
pp. 213-214
Author(s):  
C. Dean
Keyword(s):  
1927 ◽  
Vol 38 (2) ◽  
pp. 294 ◽  
Author(s):  
H. M. Halverson
Keyword(s):  

1928 ◽  
Vol 5 (11) ◽  
pp. 361-363
Author(s):  
Claude L Lyons
Keyword(s):  

1932 ◽  
Vol 3 (5) ◽  
pp. 230-234 ◽  
Author(s):  
Don Hale
Keyword(s):  

1979 ◽  
Vol 49 (1) ◽  
pp. 324-326 ◽  
Author(s):  
Robin F. Patchett

205 subjects each chose a “most pleasant” sound delivered through an earphone by turning the control knob on a continuously variable audio oscillator. Most subjects chose a frequency in a relatively narrow (approximately 350 Hz) band centered on 399 Hz. The preferences did not appear to be influenced by sex or age.


1983 ◽  
Vol 14 (2) ◽  
pp. 75-78
Author(s):  
Carl R. Schneiderman ◽  
Elizabeth C. Somerville

Thirty-six children were tested for their ability to vocally match both human voice and pure-tone stimuli. Spectrographic and statistical analysis of their tape-recorded responses revealed the majority of the children more closely approximated the human voice stimulus. The effects of age and sex of the children on their ability to match the two types of stimuli were also examined. The results of this study indicate that children are better able to match audiotape recordings of trained human voices modeling a wide range of calibrated frequencies than pure tones generated by an audio-oscillator.


1978 ◽  
Vol 16 (5) ◽  
pp. 303-304
Author(s):  
John E. Peterson
Keyword(s):  
Low Cost ◽  

1952 ◽  
Vol 40 (11) ◽  
pp. 1385-1395 ◽  
Author(s):  
D. Thomas
Keyword(s):  

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