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18. Are Ambisonic decoders being manufactured commercially?




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This article is from the Ambisonic Surround Sound FAQ, by Martin Leese with numerous contributions by others.

18. Are Ambisonic decoders being manufactured commercially?

Yes.

By Minim Electronics Limited. When I last spoke to them in January
1995, they were about to revamp their offerings.

Minim Electronics Limited
Lent Rise Road
Burnham
Slough SL1 7NY
United Kingdom
Phone: +44-1628-663724

Cepiar Limited manufacture a reference Ambisonic decoder, the
Ambi-8x. This is intended for professional use, and is priced
accordingly. Using plug-in resistor boards, the decoder can be
configured for 4, 5, 6, 7 or 8 speakers, and for horizontal or
periphonic (full-sphere) surround sound. Cepiar also plan to release a
consumer Ambisonic decoder in the second half of 1998.

Cepiar Limited
Debden House
11 St Ethelwold's Close
Ely
Cambridgeshire CB6 3AX
United Kingdom
Phone: +44-1353-666818
Fax: +44-1353-666819

In March 1993, Sound & Vision (see References) reviewed the Onkyo
TX-SV909PRO A/V Receiver which incorporates an Ambisonic decoder. When
in Ambisonic mode, the receiver is configured only for four
speakers. The successor to the Onkyo 909PRO was the Onkyo 919THX, but
this did not incorporate an Ambisonic decoder.

Onkyo USA Corporation
200 Williams Drive
Ramsey
NJ 07446
USA
Phone: +1-201-825-7950
Fax: +1-201-825-8150

Onkyo Europe GMBH
Hellersbergstrasse 4
4040 Neuss
Germany
Phone: +49-2131-120075
Fax: +49-2131-103306
Telex: 8517916 ONDU D

Meridian's 565 DSP Surround Processor, which can be configured for 4,
5, 6 or 7 speakers, incorporates an Ambisonic decoder. Using delay
lines and other tricks, the aspect ratio of the area enclosed by the
speakers can be varied between 0.5:1 and 2:1.

Meridian Audio Limited
Stonehill
Stukely Meadows
Huntingdon
Cambridgeshire PE18 6ED
United Kingdom
Phone: +44-1480-52144
Fax: +44-1480-459934
E-mail: jrsAT_SINGmeridian-audio.com
Web: <http://www.meridian-audio.com/>

Meridian America Inc
3800 Camp Creek Pkwy.
Suite 112, Bldg. 2400
Atlanta
GA 30331
USA
Phone: +1-404-344-7111
Fax: +1-404-346-7111

The October 1995 issue of Audio magazine contained an annual equipment
directory that included Sansui and Legacy Audio as suppliers of
Ambisonic receivers and decoders, respectively. The Sansui receiver,
model RZ2900, does not have an Ambisonic mode, so this was a
misprint. When I last spoke to Legacy Audio in July 1996, they had
decided against adding an Ambisonic mode to their Steradian product.

Legacy Audio
3023 E. Sangamon Ave
Springfield
IL 62702
USA
Phone: +1-217-544-5252 (also 1-800-283-4644)
Fax: +1-217-744-1483

Audio magazine's 1996 equipment directory did not have an indicator
specifically for Ambisonics.

Version 2.2 of this FAQ suggested that Maplin Electronics plc offered
an Ambisonic decoder kit. This was incorrect. In 1994, Electronics -
The Maplin Magazine carried a series of articles on surround sound
(see the Woodgate 1994 reference), but referred readers to Minim
Electronics Limited for the supply of Ambisonic decoders.

If anybody knows of other domestic Ambisonic decoders, will they
please let me know. I am particularly interested to hear about stand
alone Ambisonic decoders that are not bundled together with home
theatre decoders.



 

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