Composers Desktop Project Forum

Have you made a loaded a harmonics file into the first parameter?

This should be a text file with just the harmonic number and the amplitude value on each line.

You need to give it value pairs for the harmonic you want it to add and the loudness of that harmonic, something like this will add even only harmonics with decreasing loudness:

2 0.5
4 0.4
6 0.3
8 0.2
10 0.1
12 0.05

In Soundloom you can press the Make File button to make the file directly, in Soundshaper you can edit it in the black box in the process window.

There is more documentation on this here: https://www.composersdesktop.com/docs/html/cdistort.htm#HARMONIC

You may also choose a spectral file for Input 1 or 2 in Soundshaper, but only if the Auto-FFT option is selected (which it should be by default). It would be helpful to have an optional wet-dry control integrated into a lot of procedures. I'm looking on methods to add this to Soundshaper.

Soundloom and Soundshaper dont let me aply the harmonic distortion. It says something like "data file doesnt exists" I tried to edit the parameters but always says error. Some suggestion?

Quote from: dwheelersf on September 24, 2025, 10:43:22 PMdoes this leave sound thread out of the picture

No of course not! For Soundthread, you need the CDP download so you have the CDP program set.

Thank you Robert Fraser. really appreciate it. I havent checked yet but does this leave sound thread out of the picture? this is a different topic  gonna check out these GUIs first. has anyone installed this on a ESP32 or ras pie and use it like a guitar pedal effects processor?

CDP PC INSTALLATION
The PC downloads no longer have an installer exe (since 29th August), as there is really no need for one.

There are two versions of the PC download: CDP8_001_PC.zip and CDP8_001Lite_PC.zip. (The Lite version just omits the offline CDP documentation, which is available online.)

Each zip contains a folder "CDPR8" and some supporting docs. Unzip and place the CDPR8 folder in a location of your choice (but not one that has spaces in the path, e.g. NOT in "Program Files"). You can rename CDPR8 if you wish. That's all.

CDPR8 contains two UIs - Soundloom and Soundshaper. (Soundthread is not included yet, as it's in active development.) The CDP programs are housed in CDPR8\_cdp\_cdprogs. Soundloom expects to find them there; Soundshaper looks there initially, but its settings can support a different location. Soundthread also needs to know where they are. Any use of the command-line processor would also need this path. 

Hello everybbody for some reason none of the zip files have the install exe for cdp.. Am i doing something wrong? I am thinking about compiling the source code

in the zip file there is a folder, 3 pdf's and a txt file.
 the gui exe's are in the folder but no cdp exe

please help thank you
David

Thanks for pointing out this discrepancy. I can confirm that the upper limit for PVOC points (the -c flag) is indeed 16380. Non-powers-of-two are not precluded, although pow-2 sizes are always the most efficient and fast. We'll look into the possibility of raising the upper limit, at least to 16384 or maybe 32768. In the meantime the online documentation will be corrected. (Offline generally lags behind, as it means changing the distributed packages.) 

There is an error in the documentation for pvoc anal https://www.composersdesktop.com/docs/html/cpvocman.htm#USAGEANAL

It states that the maximum number of analysis points is 32768 however the process doesn't allow for values higher than 12380.

QuoteERROR: INCORRECT USE
ERROR: Parameter[1] Value (32768.000000) out of range (2.000000 to 16380.000000)

Also interestingly the documentation states that values must be a power of 2 which is standard for fft analysis and true for almost all values however, 16380 is not a power of 2; 2^14 is 16384. Although the process does run fine with 16380 as the parameter value despite this.

Have you installed the updates listed here:
https://unstablesound.net/cdpforum/index.php?topic=337.0

There is a fix for the filter banks getting stuck in that update