MASH on the new CD players

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3 total messages Started by smeekl Thu, 11 Oct 1990 05:08

#991

Author: smeekl
Date: Thu, 11 Oct 1990 05:08

8 lines
524 bytes

Does anybody out there in dsp land know about the recently introduced MASH
reconstruction filter(?) in the newer generation CD players ???

I've asked some Hi-Fi Salespeople about it, but they tried to sell me one..

Thanks
Lindsay

Re: MASH on the new CD players

#1005

Author: Hiroshi Miyanaga
Date: Tue, 16 Oct 1990 11:59

25 lines
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In article <3957.27146ebf@cc.curtin.edu.au> smeekl@cc.curtin.edu.au writes:

 >>Does anybody out there in dsp land know about the recently introduced MASH
 >>reconstruction filter(?) in the newer generation CD players ???

 MASH was invented here at NTT (Nippon Telegraph and Telephone Corp.) LSI 
Laboratories. The following three papers were good to read. 

(1) Y. Matsuya, et al "A 17-bit Oversampling D-to-A Conversion 
         Technology Using Mutistage Noise Shaping"
    IEEE Jouranal of Solid-State Circuits Vol.24, No.4, August 1989, 
    pp.969-975.

(2) K. Uchimura, et al,"VLSI A-to-D and D-to-A converters with multi-stage
         noise shaping modulators," ICASSP86, pp.1545-1548.

(3) Y. Matsuya, et al, "A 16-bit oversampling A-to-D conversion technology 
        using triple-integration noise shaping," 
    IEEE Journal of SC, Vol.SC-22, pp.921-929, Dec., 1987.

----------------
Hiroshi Miyanaga

NTT LSI Labs, Kanagawa, Japan
miya%nttica.ntt.jp@relay.cs.net

Re: MASH on the new CD players

#1022

Author: jj, like it or not
Date: Mon, 22 Oct 1990 15:25

13 lines
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People interested in MASH (and other "1 bit") technologies
should look at Jim Candy's papers from the 1960's and 1970's
on delta-sigma modulation.

The "new" algorithms are refinements of delta-sigma.


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