Ok, let’s jump right into it. First of all we need 2 sounds. The tricky part about this process is trying out different sound combinations and seeing what works. The most important variable seems to be the pitch of the samples as transposing them up & down influences the end result quite a bit. I’m gonna use 2 different samples here but a sample can also be convolved with itself and that often gives useful results too. Somewhat like a more mellow version of the sound. Anyhow, the first sample I’m using is just some random snippet from an old record:
Again in a random manner, I’ve decided to transpose it down 6 semitones. I’m using CDP’s “modify speed” process. Please note that in order this to work you have to use CDP or re-render your transposed sample as CDP won’t care if you repitch it “live” inside Renoise.
The result isn’t surprising:
For the second sound, I’ve picked something from my own library. It’s just an ambient sample also done with CDP probably.
I did a couple tries and it sounded a little better in the final process if I transposed this one up 1 semitone. Here is what I did.
And it sounds like it’s… pitched up a semitone:
At this point using fastconv is pretty simple. You just select the samples to combine and click process. A rather important note: I’ve maximized the ambient sample before I started processing, as fastconv sometimes returns silent results on quieter samples. You also need to have both files at the same bit depth. My samples are arranged like this in Renoise, and they are both 44.1k & 16 bit.
And finally CDP window. I haven’t got many useful timbres using the “X” and “-f” parameters generally but anything can happen in the right moment in CDP, so don’t rule them out:
The resulting sound:
It’s quite organic and abstract, a blend of both sounds in the beginning phase but has a nice unexpected twist near the end. While this surely isn’t the most exciting or advanced sound you can accomplish using CDP, it does the job for this very first tutorial and I’d say it could work in a tune with a little bit of editing/sequencing and maybe a couple of FX. Besides, there’s so much more to try (repitching, reversing, trimming different parts of the samples, adding other processes or effects) before you combine sounds, it’s almost impossible to get something that you wouldn’t like, even keeping it basic.
So that’s all. Being my first attempt, preparing this post took way too much time and effort (mainly Soundcloud driving me insane), and I’m not sure if I’ve presented it in the best way possible so please let me know what you think in comments or by email.
Thank you for reading, bye!