[sdiy] What book is this ladder filter from?

[Tom Wiltshire]

It isn't in my copy of 'Electronic Synthesizer Construction'. The  
filter circuit in that book is a 12dB/Oct State Variable BPF/LPF   
design based on the LM13600 transconductance amp.

HTH,
Tom

On 10 Oct 2007, at 20:11, Tim Stinchcombe wrote:

> Hi list,
> 	Can anyone tell what book the diode ladder filter in this old Paul
> Maddox 'Modulus' newsletter is from?:
>
> http://www.syntiac.com/ext/modulus5.pdf
>
> The print style strongly suggests one of the old Bernard Babani  
> Publishing
> 'pocket book' types, of which I have several, including
>
> 'Electronic Music Projects', and
> 'More Electronic Music Projects', both R.A.Penfold,
>
> and it is neither of them.
> There used to be a copy of 'Electronic
> Synthesizer Construction' (also by Penfold) on the net, at  
> andrews.edu (Tony
> Clark's pages I think), but the link seems long dead.
>
> Anyone recognise where it is from?
>
> Thanks,
> 	Tim
> __________________________________________________________
> Tim Stinchcombe
>
> Cheltenham, Glos, UK
> email: tim102 at tstinchcombe.freeserve.co.uk
>
>
>
>
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