Cycling 74 » Topic: Max Signal Smoothing http://cycling74.com/forums/topic/max-signal-smoothing/feed Tue, 18 Jun 2013 15:18:04 +0000 http://bbpress.org/?v=2.2.4 http://cycling74.com/forums/topic/max-signal-smoothing/#post-46201 <![CDATA[Max Signal Smoothing]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-46201 Thu, 29 Oct 2009 13:35:54 +0000 Resinate Hello all, I am new to this forum and have been studying Max/MSP/Jitter on my uni course over the past year and am now beginning my final major project on an audio and music technology degree. My project involves motion tracking using colour and dispersing sound around speakers in relationship to user position and motion.

Without going into too much more detail, here is my problem that i hope can be helped: (i think it is pretty simple really, my knowledge of Max/MSP is pretty limited!)

– Pasted Max Patch, click to expand. –

This abstraction is used to determine the velocity of an object that is being tracked. It is fed XY co-ordinates from the jitter object findbounds however can take any input and the bucket object seems to output some form of rate of change.

My problem is the output from this is used to control LFO speed on a hardware synthesizer. The output currently jumps between numbers which incurs glitches with sound. I’ve looked at smoothing using the ‘slide’ object on the input for my MIDI out but doesn’t seem to be working as i’d thought it might. This may be down to my lack of understanding of the object or that it doesn’t do what i need. I need to ramp very quickly between values to control the synth appropriately.

I appreciate this is my first post on the forum but i hope there is someone who can help me

Josh

]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166395 <![CDATA[Re: Max Signal Smoothing]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166395 Thu, 29 Oct 2009 13:53:37 +0000 Steven Miller Did you have a look at [line] and/or [line~]?

]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166405 <![CDATA[Re: Max Signal Smoothing]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166405 Thu, 29 Oct 2009 13:53:37 +0000 Steven Miller Did you have a look at [line] and/or [line~]?

]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166396 <![CDATA[Re: Max Signal Smoothing]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166396 Thu, 29 Oct 2009 14:22:56 +0000 Resinate hi thanks for your quick reply.

I had looked at the line object but wasn’t sure how it would work with a constantly changing input. Having looked again i gather it will look at the input values coming in and then ramp up to the next one immediately? I had always used it before with set values to ramp between numbers.

As far as placing ‘line’ does it matter if it’s done before or after scaling or is it best to place line just before the actual MIDI message is sent out.

thanks for your help think it should do it. I did think it was easily solved Smile

cheers,
Josh

]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166406 <![CDATA[Re: Max Signal Smoothing]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166406 Thu, 29 Oct 2009 14:22:56 +0000 Resinate hi thanks for your quick reply.

I had looked at the line object but wasn’t sure how it would work with a constantly changing input. Having looked again i gather it will look at the input values coming in and then ramp up to the next one immediately? I had always used it before with set values to ramp between numbers.

As far as placing ‘line’ does it matter if it’s done before or after scaling or is it best to place line just before the actual MIDI message is sent out.

thanks for your help think it should do it. I did think it was easily solved Smile

cheers,
Josh

]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166397 <![CDATA[Re: Max Signal Smoothing]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166397 Thu, 29 Oct 2009 21:48:25 +0000 MIB I probably would do it like this:

– Pasted Max Patch, click to expand. –

I got rid of one of the metros. this way you are sure that the right side always gets the bang first and then the left side (you could also use a trigger to make sure).
I also put in a change object. this way you don’t get an output if the number repeats.

]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166407 <![CDATA[Re: Max Signal Smoothing]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166407 Thu, 29 Oct 2009 21:48:25 +0000 MIB I probably would do it like this:

– Pasted Max Patch, click to expand. –

I got rid of one of the metros. this way you are sure that the right side always gets the bang first and then the left side (you could also use a trigger to make sure).
I also put in a change object. this way you don’t get an output if the number repeats.

]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166398 <![CDATA[Re: Max Signal Smoothing]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166398 Fri, 30 Oct 2009 13:58:31 +0000 Resinate cheers for the reply. This is pretty much what i ended up doing anyway with line object but the metro bangs should be at the same time really as they are both involved in the velocity of the object as they represent X and Y movement. Will add change in though thank you Smile

]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166408 <![CDATA[Re: Max Signal Smoothing]]> http://cycling74.com/forums/topic/max-signal-smoothing/#post-166408 Fri, 30 Oct 2009 13:58:31 +0000 Resinate cheers for the reply. This is pretty much what i ended up doing anyway with line object but the metro bangs should be at the same time really as they are both involved in the velocity of the object as they represent X and Y movement. Will add change in though thank you Smile

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