共 4 条
 
              [1]
            
             
            
                  Natural Frequency, Duration, and Intensity of Vowels in Reading
                 
                  [J].
                  
                    JOURNAL OF SPEECH AND HEARING DISORDERS,
                   1949, 14 (03) 
                  :216-221
              [2]
            
             
            
                 BLACK JW, 1949, J SPEECH HEARING DIS, V14, P219
              
              [3]
            
             
            
                  The Power of Fundamental Speech Sounds
                 
                  [J].
                  
                    BELL SYSTEM TECHNICAL JOURNAL,
                   1926, 5 (03) 
                  :393-403
              [4]
            
             
            
                 SACIA CF, 1926, BELL SYST TECH J, V5, P400
              

