These are in the Acrobat manual, Section 8.13, page 8:24.

Get it here:
   http://www.geocities.com/~csoundmanual

-David.

John wrote:
>
> Last documentation I can find in a quick look is
> -rw-r--r--   1 jpff     comp        17072 Jan  5  1997
> /home/jpff/MUSIC/csound/karpen.rtf
> -rw-r--r--   1 jpff     comp        10445 Jan  3  1997
> /home/jpff/MUSIC/csound/karpen.txt
>
> which starts....
>
> PVOC related unit generators added by Richard Karpen, 1992-1996
>
>
> kfreq, kamp   pvread          ktimpnt,  ifile, ibin                  
>               pvbufread       ktimpnt, ifile
> ar            pvinterp        ktimpnt, kfmod, ifile,
> kfreqscale1, kfreqscale2,
>                                       kampscale1, kampscale2,
> kfreqinterp, kampinterp
> ar            pvcross         ktimpnt, kfmod, ifile, kamp1,
> kamp2, [ispecwp]
>                      
>               tableseg        ifn1, idur1, ifn2[, idur2, ifn3[...]]
>               tablexseg       ifn1, idur1, ifn2[, idur2, ifn3[...]]
> ar            vpvoc           ktimpnt, kfmod, ifile, [ispecwp]
>
> DESCRIPTION
>
> pvread reads from a pvoc file and returns the frequency and amplitude
> from a single anaylsis channel or bin. The returned values can be used
> anywhere else in the csound instrument. For example, one can use them
> as arguments to an oscillator to synthesize a single component from an
> analyzed signal or a bank of pvreads can be used to resynthesize the
> analyzed sound using additive synthesis by passing the frequency and
> magnitude values to a bank of oscillators.
>
> ..............
>
> I do have some other files from RichardK on my portable,
> which is not here.
> Will check over weekend.
>
> ==John
>