[PD] Filtering Midi Active Sensing

[Ingo Scherzinger]

Thank you for the suggestion, Simon,

unfortunately USB is not going to help me too much. I'm using a MIDIMAN 
Audiophile 2496 soundcard with the built in (PCI) MIDI interface.
The machine is running on Linux (special slim version).

What I need is a signal to activate the audio engine once the computer 
gets started out of hibernate mode.
If you go into hibernate mode with audio enabled and restart the 
computer audio gets stuck. Enabling audio after restarting from 
hibernate does the trick.
The only signal that's permanently present from the MIDI connection is 
Active Sense. This way you can disconnect the keyboard, turn off audio 
and restart with the the keyboard connected. Everything will get started 
as expected. The Active Sense signal will turn on audio without you 
having to touch anything.

I tried simply running a count down before going into hibernate but 
unfortunately pd keeps counting even though the computer is turned off! 
Strange!!!

But I also need Active Sense for the reason it was originally invented 
for: preventing hanging notes in case of MIDI cable problems. I'm 
working on a hardware instrument that's running with PD. So Active Sense 
in the original way comes in handy.

Ingo


simon wise schrieb:
>
> On 6 Feb 2008, at 7:12 PM, Ingo Scherzinger wrote:
>
>> I actually need the opposit of what Frans needs.
>> I need anything that can receive it so I can start some functions 
>> upon connecting a keyboard to pd.
>> Are there any externals that can handle active sense in whatever way?
>
>
> what OS are you on?
>
> try [hid] or [hidio] from Pd-exteneded if you want to be able to 
> detect USB (keyboard or other) inputs regardless of which window is 
> 'in focus'. It also allows you to use multiple keyboards independently.
>
>
> simon
>
>
>