Klarinet Archive - Posting 000272.txt from 2005/11

From: "Fernando Silveira" <fernandounirio@-----.com>
Subj: Re: [kl] Cambridge Seminar
Date: Sat, 12 Nov 2005 16:27:13 -0500

Hi Tony,
Unfortunely the bus from Brazil to UK is too expensive and I can't be there
too.
Do you know if it is possible to get some paper about that subject? Do you
have, for exemple, her e-mail address??

Best

Fernando Silveira
Rio de Janeiro State Federal University - Brazil
----- Original Message -----
From: "Tony Pay" <tony.p@-----.org>
To: <klarinet@-----.org>
Sent: Saturday, November 12, 2005 7:04 PM
Subject: [kl] Cambridge Seminar

> ----------------------------------------------------------------------------
>
> OCCASIONAL SEMINARS IN MUSICAL ACOUSTICS
>
> A seminar will take place at 2.30 on Wednesday 23rd November, in Lecture
> Room
> 4 of the Music School, West Road, Cambridge. All are welcome.
>
> Dr Claudia Fritz (Departments of Music, Engineering and Experimental
> Psychology, University of Cambridge).
>
> The clarinet and the clarinettist: influence of the vocal tract on sound
> production.
>
> It is clear to clarinettists that they adjust their vocal tract (VT) when
> playing, but it is less clear for them what exactly they do and how their
> VT
> physically affects the sound. This talk will describe a study of the
> coupling
> between the musician and his instrument, to explore how it influences the
> frequency of the note played, its spectrum and the mouth pressure required
> to
> initiate the note. Measurements have been made of the impedance spectra of
> the VT of twenty Australian players under a range of conditions. These
> measurements showed a large variability among musicians, but some general
> trends were observed. Most clarinettists vary the configuration of the VT
> relatively little over most of the range of the instrument, except for the
> altissimo register. They do however use radically different
> configurations
> for special effects such as pitch bend and awkward slurs across registers.
> It
> turns out that there is no "golden rule" for musicians, and they do not
> tune
> their vocal tract resonances to the note played as has been assumed in
> previous work. Experiments were then conducted using a blowing machine
> with
> an artificial VT. Threshold pressures, playing frequencies, spectra and
> transition transients were measured. The results show poor agreement with
> the
> numerical calculations but reveal interesting features. In the low
> register,
> the spectral envelope, but not the playing frequency, depend strongly on
> the
> tract configuration. The difference is larger for high notes, where even
> the
> notes issued can be significantly different between the two
> configurations.
> An appropriate VT configuration can also make some notes start more easily
> (shorter transients) and can facilitate slurs. The results of this
> experimental study were generally in good agreement with the opinion of
> clarinettists.
>
> ---------------------------------------------------------------------------
>
> Unfortunately, I can't be there.
>
> Tony
> --
> _________ Tony Pay
> |ony:-) 79 Southmoor Rd tony.p@-----.org
> | |ay Oxford OX2 6RE http://classicalplus.gmn.com/artists
> tel/fax 01865 553339
>
> ... No man is an island. But some of us are long peninsulas.
>
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>
>

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