Re: [LAU] Music for the deaf

From: Danni Coy <danni.coy@email-addr-hidden>
Date: Wed Jan 20 2010 - 02:48:46 EET

Not an answer to your question but on the topic and very interesting all the
same.
http://www.ted.com/talks/evelyn_glennie_shows_how_to_listen.html

On Wed, Jan 20, 2010 at 7:57 AM, Giso Grimm <gg3137@email-addr-hidden> wrote:

> Simon Fielding wrote:
> > My sister is a specialist teacher for hearing-impaired primary school
> > children. As part of her curriculum she includes music and in
> > particular, nursery rhymes etc for the younger children. She would like
> > them to be able to sing these at home with and/or for their parents. For
> > those children with non-hearing-impaired parents, this is not a problem
> > but many of the children also have hearing-impaired parents. Therefore
> > she would like to produce a CD of her singing for the children to take
> > home and use. I would really appreciate any help members can give me as
> > I am not a professional musician or recording engineer.
> >
> > 1) She will be singing unaccompanied (she is a trained singer and is
> > perfectly competent to do this) in an alto register to avoid any
> > distraction for the children from accompaniments etc. Does anyone have
> > any suggestions about this? (eg effects for recording, effects for the
> > headphone mix etc)
>
> For most hearing impaired listeners, less reverberation is usually
> better (if understanding the words is desirable). The effect of
> compression very much depends on the accompaniment and/or distracting
> noises; in a clean situation compression usually makes things worse (see
> e.g., R. Plomp: The negative effect of amplitude compression in
> multichannel hearing aids in the light of the modulation-transfer
> function. J. Acoust. Soc. Am., vol 83(6), 1988). Try to avoid pops
> during recording.
>
> >
> > 2) This one's a bit more specialist so you may not be able to help -
> > hearing impairment often starts with loss of high frequency response.
> > The obvious thing would seem to be to boost these but I don't know if
> > that would be correct. Does anyone know?
>
> If they will listen via loudspeaker and wear their hearing aids
> (assuming that they have one), all individualized frequency shaping is
> already done by the hearing aid. Listening via headphone is not really
> working with hearing aids, thus an individual frequency shaping might be
> beneficial. However, for that you need to know a bit about the
> individual hearing (e.g., hearing threshold and whether it is
> sensorineural or conductive loss, as a bare minimum). A very simple rule
> of thumb is to apply a frequency dependent gain which is 40% of hearing
> threshold for sensorineural loss and 100% of threshold for conductive loss.
>
> Linux audio tools can be used to do batched pre-filtering of audio
> material based on individual hearing loss (e.g., the command line tool
> 'applyplugin' which applies LADSPA-Plugins to files, can load equalizers
> and set their gains).
>
> Best regards,
>
> Giso
>
>
> >
> > Any comments on any other aspects of this project would also be more
> > than welcome.
> >
> > Hopeful regards,
> > Simon
> > _______________________________________________
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> > Linux-audio-user@email-addr-hidden
> > http://lists.linuxaudio.org/listinfo/linux-audio-user
>
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Received on Wed Jan 20 04:15:02 2010

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