my "audiolab" abstraction library is now available on deken. You'll need Pd-0.50 or later to run this.
Please report any bugs on github: https://github.com/solipd/AudioLab

here is a picture to draw you in (:

Edit:
list of objects:

Soundfle processing
pp.sfplayer~ ... variable-speed soundfile player
pp.grainer~ ... granular sampler
pp.fft-stretch~ ... pvoc time stretching & pitch shifting

Spatialization
pp.pan~ ... constant power stereo panning
pp.midside~ ... mid-side panning
pp. spat8~ ... 8-channel distance based amplitude panning
pp.doppler~ ... doppler effect, damping & amplitude modulation
pp.dopplerxy~ ... xy doppler effect

Effects
pp.freqshift~ ... ssb frequency shifter
pp.pitchshift~ ... pitch shifter
pp.eqfilter~ ... eq-filter (lowpass, highpass, resonant, bandpass, notch, peaking, lowshelf, highshelf or allpass)
pp.vcfilter~ ... signal controlled filter (lowpass, highpass, resonant)
pp.clop~ ... experimental comb-lop-filter
pp.ladder~ ... moogish filter
pp.dynamics~ ... compressor / expander
pp.env~ ... simple envelope follower
pp.graindelay~ ... granular delay
pp.rev~ ... fdn-reverberator based on rev3~
pp.twisted-delays~ ... multipurpose twisted delay-thing
pp.shepphaser~ ... shepard tone-like phaser effect
pp.echo~ ... "analog" delay

Spectral processing
pp.fft-block~ ... audio block delay
pp.fft-split~ ... spectral splitter
pp.fft-gate~ ... spectral gate
pp.fft-pitchshift~ ... pvoc based pitchshifter
pp.fft-timbre~ ... spectral bin-reordering
pp.fft-partconv~ ... partitioned low latency convolution
pp.fft-freeze~ ... spectral freezer

Misc.
pp.in~ .... mic. input
pp.out~ ... stereo output & soundfile recorder
pp.out-8~ ... 8 channel output & soundfile recorder
pp.sdel~ ... samplewise delay
pp.lfnoise~ ... low frequency noise generator
pp.spectrum~ ... spectrum analyser
pp.xycurve

This is immense! Thanks a lot

NIcenadditions, solipp!
Could you also implement an Haas effekt?

@tungee Haas effect is already implemented in your brain, it's a psychoacoustic effect

I guess you want is a small delay between two output channels. You can do it with [pp.sdel~] samplewise delay.
something like this:

assuming you have the abstractions in your path, here is the patch:
interaural.pd

edit:
if you change the delay times over time you can get some nasty phasing effects depending on the position of your speakers. it works okay with headphones though.

Thank you very much Solipp.
Exactly what i asked for

wow this is really beautiful work!

Thank you solipp, look like a really interesting library.
I've got an error when I'll try to use it:
"audiolab: can't load library"

I thought because I'm using Pd 0.50.2 "vanilla", is it possible? Will it be available for this version?

@tabache seems like you have declared "audiolab" under File -> Preferences -> Startup.
You only need to do this for single binary libraries, e.g. zexy or GEM. Audiolab is a collection of abstractions. You can point pd to the right directory under File -> Preferences -> Path, or you can just copy the audiolab folder into your projects directory and use [declare -path ./audiolab] in your main patch.
It should still work with Pd 0.50.2, but in the future I'll incorporate any new features of pd whenever it makes sense.. you should stick with the latest version of pd, there are only benefits.

cheers!

new version up! (v 0.4)

two new objects:

pp.parameq~ - a parametric equalizer.
fancy! I guess I pushed pd-UI design to the limits with this one:

pp.butterkreuz3~ - a 3 band crossover filter with a relatively flat magnitude response. Allows you to create multiband (well, 3 band) effects.

...many fixes, changes, additions... (sorry, I'm too lazy to keep track)

Wow! Great additions!