[sdiy] 40-band vocorder

[Ian Smith]

I have to admit, I was the "more pole" guy... yes, that's me... the Tim Allen of the analogue world. So since 40 bands is a bit excessive, would doing the same level adjusting... attenuating I guess on the filters be interesting?
-Ian (more knobs is better) Smith

----------------------------------------
> Date: Tue, 31 Mar 2009 19:41:30 -0700
> From: lightburnx at yahoo.com
> Subject: Re: [sdiy] 40-band vocorder
> To: taciturn_unquiet at hotmail.com
>
>
> wait, i just sent you an incomplete response didn't i? meh...
>
> Anyhoo, yeah, as said it's one of those cases where more isn't necessarily better. Someone a while back asked about a "more pole" filter (that is one having more than the standard 2-4), and thing is a 3 doesn't sound much different than a 4, and it's less and less after that.
>
> Another thing that filter stages do is phase shift the signal by 45 degrees, and there's other EE stuffs that make this not neccicarily something you want.
>
> I think the Access Virus has something like a 32 band vocoder, and that's nigh overkill. Think bigger than 24-bit sampling and stuff like that.
>
> But wait and see what the higher ups on the group have to say - might be "rock n roll let's build this bitch!" for all I know :P
>
>
> _Kyle
>
> --- On Tue, 3/31/09, Ian Smith  wrote:
>
>> From: Ian Smith 
>> Subject: [sdiy] 40-band vocorder
>> To: "synth diy" 
>> Date: Tuesday, March 31, 2009, 5:27 PM
>>
>> Hey all,
>> I'm back with another insane idea. Here are the sources of
>> my madness: A book on Vocal Coding and Formants, Paia
>> Corporation's Vocorder, and Jurgen Haible's 40 band fixed
>> filter bank.
>> I know some of you just twitched in terror at the thought
>> of all that wire.
>> For those of you that didn't: 80 filters (2 sets of 40, one
>> for the vocal input one for the instrument input) with 80
>> sliders, 40 envelope followers, and 40 VCAs.
>> Yup... there go the rest of you. That twitch was
>> disturbance-in-the-force worthy...
>> But wouldn't it be awesome to be able to shape both the
>> instrument signal AND the vocal signal?
>> In other questions... how advanced do the VCAs need to be?
>> Do they have to be full blown log/lin VCAs or would a simple
>> little single transistor VCA like the one in Ray Wilson's
>> Weird Sound Generator work?
>> -Ian
>> _________________________________________________________________
>> Hotmail® is up to 70% faster. Now good news travels really
>> fast.
>> http://windowslive.com/online/hotmail?ocid=TXT_TAGLM_WL_HM_70faster_032009
>> _______________________________________________
>> Synth-diy mailing list
>> Synth-diy at dropmix.xs4all.nl
>> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>>
>
>
>

_________________________________________________________________
Windows Live™ SkyDrive: Get 25 GB of free online storage.
http://windowslive.com/online/skydrive?ocid=TXT_TAGLM_WL_skydrive_032009