children's hearing curve?

[Kevin Austin <kevin.austin@xxxxxxxxxxxx>]

List

Perhaps this is also related to the upward shift of formant 
frequencies in children's voices somehow.


Formant frequencies for man / woman / child (spoken) adapted from:

Peterson and Barney, JASA 24:175 (1952)
Rossing, The Science of Sound (1990) p 320, 352

Sung vowels: Appleman (1967) The Science of Vowel Pedagogy, Indiana U Press


             front
                 /i/     /I/     /´/     /æ/
Spoken          (ee)    (ih)    (eh)     (a)

        Man      270     390     530     660
F(1)    Woman    310     430     610     860
        Child    370     530     690    1010

        M       2290    1990    1840    1720
F(2)    W       2790    2480    2330    2050
        C       3200    2730    2610    2320

        M       3010    2550    2480    2410
F(3)    W       3310    3070    2990    2850
        C       3730    3600    3570    3320

Formant           ­4      ­3      ­2      ­1
amplitude  (dB)  ­24     ­23     ­17     ­12
                 ­28     ­27     ­24     ­22


Best

Kevin




> Date:    Sun, 1 Oct 2006 01:33:33 -0700
> From:    Hiroko Terasawa <shiraiwa@xxxxxxxxxxxx>
> Subject: children's hearing curve?
>
> Dear List,
>
> I'm asking this question out of curiosity - according to 
> Fletcher-Munson curve, human hearing is most sensitive around 3khz, 
> which, as I know of, is delivered by the length of ear canal. I 
> guess that infants have shorter ear canals, then possibly they have 
> different peak frequency of sensitivity... maybe the peak frequency 
> changes while growing up... Have you seen such measurements? I'd 
> love to see the curve.
>
>   - hiroko
> --
> Hiroko Terasawa
> http://ccrma.stanford.edu/~hiroko/
>
>
> Date:    Sun, 1 Oct 2006 22:37:31 +0200
> From:    Martin Braun <nombraun@xxxxxxxxx>
> Subject: Re: children's hearing curve?
>
> Dear Hiroko and list,
>
> there are plenty of data on ear canal resonance in neonates, 
> infants, children of various ages, and adults. Not long ago I 
> reviewed some of this material:
>
> http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=3Dpubmed&cmd=3DRetrieve&=
> dopt=3DAbstractPlus&list_uids=3D16644155&itool=3Diconabstr&query_hl=3D2&i=
> tool=3Dpubmed_docsum
>
> Martin
> ---------------------------------------------------------------------
> Martin Braun
> Neuroscience of Music
> S-671 95 Kl=E4ssbol
> Sweden
> web site: http://w1.570.telia.com/~u57011259/index.htm