Dynamically select multiple audio files to play

Beginners
1

Hi there,

I have 14 audio files with tones (A, A# … G, G#) . I wish to make a slider which controls the amount of these tones that are combined. So sliding the slider to the right means more audio files are combined

I have tried with a merge, bind, select and switch, but no luck yet. My line of thinking was I could attach an expression to the scope parameter of the Merge CHOP for example. But that doesn’t work.

Thanks!

2

The problem is not so trivial… You have to be more precise about the cinematic of your progression, linear? first go from 0 to 1 and then second? every tone grows together but with different speed? You cannot just cut the sound but you need some curve.
– the main tool to add the audio files (or oscillators) would be a math Chop, using gain. After that you have to build the progression from linear 0 to 1 slider to each tone, for example with pattern Chop or Animation Comp.
But TD is not the better tool to do that, I would use Max/Msp or PureData to do that, with all the necessary tools to do it properly.

3

Hi Bartholome !

If you’re trying to do harmonic mixing, I would reccomend checking out the Phaser CHOP and using those samples to control the volume of each of your Audio Files. You can then merge those all with a Merge CHOP, and pass that to a Math CHOP where you Add your Channels together. You’ll probably want to throw some dynamics after that with the Audio Dynamics CHOP to compress / limit the amplitude.

Here’s a .tox file I threw together that demonstrates how this might integrate into a larger system. Let me know if you have any questions or comments !

harmonic_mixing_example.tox (12.1 KB)

4

Hi Wooliii,

Wow, thank you so much for your help! The file you sent helps us heaps. Controlling the volume proves the way for us.

For if you are interested: we are two TD beginners from the Netherlands. One animator and one recent media technology graduate. We are creating a visualisation in which we try to ‘show’ how mercury emissions from gold mining around the equator cause mercury sedimentation in the arctic regions and how the marine life is affected by this. We cover quite some aspects: sound, data, particles, a UI and interaction. If you would like to know more, shoot me a message!

Thanks again!