Create a bang when signal reaches a threshold ?

chapelier fou · Post by **chapelier fou** » Mon Jul 01, 2013 9:18 pm

What's the best way to do it ? im confused with thres~, average~, etc. Using meter~ is probably not the best method.
My goal is to replace a shitty live kick drum by a sample. i want the original kick drum to send a midi note instead.
Thanks !

chapelier fou · Post by **chapelier fou** » Mon Jul 01, 2013 9:24 pm

just found this topic, seems to be close to what im looking for
http://cycling74.com/forums/topic/how-t ... n-max-msp/

chapelier fou · Post by **chapelier fou** » Mon Jul 01, 2013 9:30 pm

so, when using this, any idea on how to 'filter' bangs so it doesn't produce any bang if the last bang happened let's say less than 100 ms ago ?
(this is a pure max question, i know...)

<pre><code>
----------begin_max5_patcher----------
375.3ocyTFsaBBCEF95xSQSu1YnfUkc2dNVLKEnBcAZIzZlaF2y9ZKvFtnDl
5b6FZ5+4PO+mONkcd.TrbKSgf2CeDB.67..mjU.ztGfJoaSJnJWZHA6EY7yn
IMgzrsZmbUMWn6TWKEZE+MlMBNXpeqbEUmjyEYOUyRzM0L.uvDFFrLztDNys
wepObU66vScGuoj2Mu63EaJ4hBl1YHbuZJnktZhdnlSK5ktbitKeeq3dOO6i
IWVOyRyXu2o1TB8qUrlNCESEYnIsqe1O+bzPbPY1fngbUPSvYfl0ERygbRHX
BS0WBEB8I1FGShrKD+gn.N5OCCmXBgFqN8.hhmILd3bFMHK6AkvECBkqy0F7
0CJ57ZlJ+2jKQX2vBdPtb76LgW.WbkAUvEe+OpNqZ0ODVJ4l5jttt8ZL7Kyl
xTZtfp4RQublePN47zTlKbGVJ4oURy+has.b0Q+vMVGgGikH2VKMeDVBei8T
zX8D9enmBNSOY1r26Cvm3e9R
-----------end_max5_patcher-----------
</code></pre>

Machinate · Post by **Machinate** » Tue Jul 02, 2013 12:02 am

you're looking for "hysteresis", a common audio gate concept. average~ -> thresh~ -> edge~ normally works just fine, to be honest.

Your problem in that patch is that you're setting both thresh~ thresholds to be the same value... don't do that

You'll find that if you play with the difference there you'll get the hysteresis effect. The new Gate device in Live9 does this in a very effective way, you might be able to pick up some ideas there.

chapelier fou · Post by **chapelier fou** » Tue Jul 02, 2013 7:16 am

Thanks. But i can't avoid the fact that i got a whole flow of bangs...

broc · Post by **broc** » Tue Jul 02, 2013 8:36 am

Look at the 'onebang' object.

<pre><code>
----------begin_max5_patcher----------
395.3ocyTssSCCCC84zuhn7bYJtc8B7F7afPnz1vHn1jo0Twfo8uSSRKih15
pXWDujHebrywm33MdHRlZMulfuC+HFg13gPVHC.pyFQpXqyKY01iQj72UYuQ
7ctz70ZKbAuDCTJs2groRHK4ZaPAcfunjZIqhai39UBVI9AUYwOhQ0n6CB5P
Wxz4uJjKddEOW6XJDlLi5igzHyVD0YLihepKFQg8JZI5Mo8Y2kZ8GK4tjPxX
xEjuCwvsZwmVmPaFMna87LK9mlznwY3r8pKveQWBFQWBBsRQjUWBClEcXcIY
bcw+BnOYMZsRNpRL8V.WoFDDa2n8q6qTiOVKv+iZII83kR3EnTNPaqRxM4DC
muuzSn008dFCi8kFNest1yPJExeODzRQC9PgqV0rJu+15dPv6HYAuVKjLsns
0X2YfAm4UQQA25l1gTIJVpDRcGENvi3TYDLAFkbUYT5D0HX5LBlGaFtE.ttl
acSAFXAfaKYtcLnw5DqijAbb+0Q5UUYSlfxFeBLp0Xq2W3KEbeK
-----------end_max5_patcher-----------
</code></pre>

chapelier fou · Post by **chapelier fou** » Tue Jul 02, 2013 9:03 am

Thanks broc ! Coincidentally this just appeared to me as i was walking in the street.

Machinate · Post by **Machinate** » Tue Jul 02, 2013 11:22 pm

This is what I'd use:

<pre><code>
----------begin_max5_patcher----------
632.3ocyVsraiBCEcM7Uf7ZFD17LUpKluiQiFY.mfqH1HioSlV07sOXyyFkG
zTRZ2XiMW664b70G4WMM.I7cjJf0CV+xxv3USCC8TpIL5Fa.1h2kVfqzgApR
4kj8.61eUhko4T1l+HHox1sA5463Zag7iUcqVoZi7bBr9c2ZRwEoo7ZlN9P+
tYoY5smm7zOh628j50UzWHuKNV8VJqfH0nAMNIuV1OqqZx2LMUM1KLsfgtNn
fqiWgei4UDz4JYUvW.qXj+1j59DKI6znCHvrr8VAtmgtHeMEaKNCzsHWG2A5
1BL4+JIswCpnaX3BvP.SXtWedVyYRFdqdIfeJnMwO4O8hBD0jsiHKviJKvkS
Vj4BRU99KqJPOntK.9ozEzxnKdKltPdICmNxeAWxULY.Z4jhx0zBxPkLWjQD
5r4DEbZYyGENQ1786aOlnDMr4aR4EbQ2sO85m1Lr1BdpReGqOZQ0jE65D3BW
EBsO5WS2qaz0vjZojytr4hmWj95lWe6oKqRvrMGunZvm49d4gjsgLiqNdtwJ
CzVeED7hTz9bTM7CdAx6iXrfVNs4wG22TlcYwAorRlm3bNak3kQVP25Rlz7l
S14Tz.iBTcgteJcwy8VVtLUWzYGTPYG9jQMEUy+dwphWKR6YPOTsFYYFoRRY
XIswDYLH047jfxoYYD8+6Q8VZVImxjcf.Enu5gbC0cSFMlHZENofjcZit4xf
C.2IXP3EXvcFOw2O3LCzbPQvWMbtemUdyoz4aEZBtemTgyQbtV7zZbgKKelH
p51SMTZ7yep84Tg15gTV6PsYHPPdl1Gu94n.rnwKW1XjWKZsY2EGBLU44My+
CfmW7sO
-----------end_max5_patcher-----------
</code></pre>

chapelier fou · Post by **chapelier fou** » Tue Jul 02, 2013 11:52 pm

Thank you ! i am pretty happy with this :

<pre><code>
----------begin_max5_patcher----------
523.3ocwVssaiBCD8Y3qvxOmsBCw.YeqeGUUqb.2DWQri.G0zV07su1CWZ1c
SnN.K8ECy3w1myYlwv69d30pi7JL5mnGPddu664AtrN7Zr8v6XGyJXUPXXI+
E05mwKpmRyOpA247BDIHn0u5ftfq0utmWu230L4FL5wlo2yzYaExM+pjmoqi
HY4cAKPjjP6CZfcLzL1sjmTRsjsC1O78kBVQ6YIxAeFT8izVexC6DRCB.LGd
1VTIdC1Bh8b5hsFtPvDqyO78sCKFmlnjbKsQj9UkENnNqNSbhSFl3jLdwIb.
hySEJylbUIvLMS6jFPBn.8SGSER3EEAx+aQf+FKO6zUEgJwFoEtcu0qNPrTG
JBVRaG6VvYbkzKWGOotRY+9RgTi6KOBoNBzvGsbX4w3wmGClNJyy2vOMUc4Q
0I0AJLzumB7IqKmlL9lbxpuGQ3JUGr0UeYqe+W78ojDMvK+ISPCyD9oQ81Rd
01SHCOBMCIiWdVU27PFXaC4x8MQCUefSGWHj+8eWADv5+OEsJ0gxrVR27gJz
mbHmWoERlVnjmEiEznvtf1Jxy4v7s3amHeuxbabCFPOdwLnqPx1V4FlHyGlh
cESAyGlnNfoYFRtnRwyJjRc.RI2VsTZzcTyBnvUAzk+qQb8OPG2YLRNj3.GR
uMUkjBfaEbOeCgrFy.Rm27O0w7+PQjw3C+eCxneZuA
-----------end_max5_patcher-----------
</code></pre>

Machinate · Post by **Machinate** » Wed Jul 03, 2013 12:24 am

yeah, but that effectively removes your hysteresis and replaces it with "no more than 10 a second", to some extent, hehe. YMMV, of course, and if it works in the application, then that's all that matters

Have a good patching wednesday, chapelier fou!

I really ought to do more work tomorrow. Keeping my fingers crossed for some motivation.

Create a bang when signal reaches a threshold ?

Create a bang when signal reaches a threshold ?

Re: Create a bang when signal reaches a threshold ?

Re: Create a bang when signal reaches a threshold ?

Re: Create a bang when signal reaches a threshold ?

Re: Create a bang when signal reaches a threshold ?

Re: Create a bang when signal reaches a threshold ?

Re: Create a bang when signal reaches a threshold ?

Re: Create a bang when signal reaches a threshold ?

Re: Create a bang when signal reaches a threshold ?

Re: Create a bang when signal reaches a threshold ?