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The basic problem with these types of solutions is that they add
"noise" to the environment as the ambient noise increases. Our best
success has been with very small speakers inside of handheld devices,
basically half phones, and they're cheap and reliable.
Charlie
On Jun 3, 2009, at 10:38 AM, Tom Nielsen wrote:
> ISEN-ASTC-L is a service of the Association of Science-Technology
> Centers
> Incorporated, a worldwide network of science museums and related
> institutions.
> *****************************************************************************
>
> Martin,
>
> In my experience, Smart Amps have the potential to make a modest
> improvement, but the effectiveness depends on the nature of both the
> noise you are fighting and the audio you are boosting. They also
> need careful adjustment, which takes time and judgement -- you need
> to come back repeatedly to hear how they are doing over the full
> range from an empty gallery to a hall full of hails. Its good to
> have one on hand for experiments -- you can try it in different
> situations and invest in permanent installations in those cases
> where the improvement justifies it.
>
> Short of headphones, which I dislike for many reasons, an approach I
> like is to deliver the audio through small loudspeakers placed so
> that an interested listener can easily bring the ear up close. The
> volume can then be very low, because sound follows an inverse square
> law. And rather than subjecting the visitor to the sound willy
> nilly, you invite them to be active listeners if they so choose.
>
> quiet regards,
>
> Tom Nielsen
> www.TheExhibitGuys.com
> On Jun 3, 2009, at 8:59 AM, Martin Weiss wrote:
>
>> ISEN-ASTC-L is a service of the Association of Science-Technology
>> Centers
>> Incorporated, a worldwide network of science museums and related
>> institutions.
>> *****************************************************************************
>>
>> I need to combat noise drowning out exhibits.
>>
>> Has anyone experience with Smart Amps, that raise the level of
>> sound in
>> exhibits by measuring ambient sound levels?
>>
>> I found
>> http://www.stoplisten.com/pdfs/smartampv2_instructions.pdf
>>
>> but there maybe others. Any thoughts or experiences?
>>
>> Martin
>>
>> --
>> Martin Weiss, PhD
>> Science Interpretation, Consultant
>> New York Hall of Science
>>
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> For information about the Association of Science-Technology Centers
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>
> Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org
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>
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Charles Carlson
Senior Scientist
exploratorium
3601 Lyon St.
San Francisco, CA 94123
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Tel: 415-561-0319
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For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.
Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org.
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