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Re: source directivity measurements

Hello Charles and Michelle,

The Common Loudspeaker Format Group (http://www.clfgroup.org/) makes a good list of loudspeaker directivity data available through their website. I understand that what you are really interested in is the directivity of real sound sources. However, the recommendations there might be useful in designing your measurement routines if you would need to carry out any.

As for directivity functions of real sound sources, the available data is unfortunately limited. The main sources that I know of are Jürgen Meyer's book "Acoustics and the Performance of Music" (musical instruments), Flanagan's JASA paper from 1960s on directivity of the human mouth, Huopaniemi's follow-up work published in Proc. WASPAA 2001, and Marshall and Meyer's Acustica article on directivity of singers. It is generally possible to extract data from these sources at least for horizontal and vertical planes. Franck Giron's excellent Ph.D. thesis on source directivity may also be of interest. Please see the list archives (http://www.auditory.org/mhonarc/2005/msg00447.html) for further information.

All the best,

Dr Hüseyin Hacihabiboglu
I-Lab / CCSR
University of Surrey, Guildford GU2 7XH, Surrey, United Kingdom
Tel:  +44 1483 683435
Fax: +44 1483 686011
e-mail: h.hacihabiboglu@xxxxxxxxxxxx
www: http://www.ee.surrey.ac.uk/Personal/H.Hacihabiboglu/
VoIP: husshho (skype) 
Sound has the power to make the world a better place

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Subject: AUDITORY Digest - 20 Jun 2007 to 22 Jun 2007 (#2007-136)
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Topics of the day:

  1. source directivity measurements (2)


Date:    Fri, 22 Jun 2007 16:47:05 +0200
From:    charles verron <charles.verron@xxxxxxxxx>
Subject: source directivity measurements

Hi list,

I'm a PhD student in spatialized sound synthesis. I am looking for 3D
directivity measurements of sound sources like bells, musical
instruments, plates, or any sounding object=85
These real measurements would be useful to investigate the role that
source directivity can take in the sound synthesis process. I would
really appreciate if anybody can point me towards such measurements.

Thanks a lot for any help,



Date:    Fri, 22 Jun 2007 13:01:39 -0700
From:    "Michelle C. Vigeant" <michelle.vigeant@xxxxxxxxx>
Subject: Re: source directivity measurements

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Hi Charles,

Source directivity is the topic my dissertation!

The PTB website has lots of directivity data, but the website doesn't
produce a direct link.  Go to the site and then type "directivity" into the
search menu.  Working group 1.73 has the data.