CDP Documentation Home Page

~ Welcome to CDP Sound Transformations – Release 7 ~

INTRODUCTION

The CDP System is designed for the in-depth exploration of sound transformation. CDP is not a 'realtime' system, but mostly transforms soundfiles ('samples') – or other CDP system types derived from soundfiles – and writes other (sound)files. There is also a limited, but growing, group of functions for sound synthesis and several sound-processing functions can be adapted for synthesis. The emphasis is on the design of sounds, either for fully electroacoustic music compositions or as sound clips or tracks in songs or other media. Many people use CDP alongside other software in a hybrid studio environment.

STARTER DOCUMENTS

Various .pdf Starter Documents are available at the top level of the documentation folder:

THE REFERENCE DOCUMENTATION

The CDP functions are grouped into Function Groups, most of which are the names of programs, each containing a number of functions. Newer single-function programs have also been allocated to a group, for reference purposes.
The Reference Documentation has a page for each Function Group with a separate reference section for each function.

The Function Groups have two main divisions: TIME-DOMAIN and SPECTRAL (or FREQUENCY DOMAIN).

Natively, CDP programs are run via a Command Line Interface (CLI). The main CDP Reference sections therefore document and describe command-line usage.

MAIN INDEX – this links to the reference documentation for all Function Groups and has a description of each group.
TIME DOMAIN INDEX – this links to the reference documentation for the 'Groucho' Time-Domain Function Groups. It also has a Table Index, a list of the functions in each group and an A-Z Index, by function-name.
SPECTRAL INDEX – this links to the reference documentation for the Spectral (Frequency-Domain) Function Groups. It also has a Table Index, a list of the functions in each group and an A-Z Index, by function-name.

OTHER INDEXES:

A-Z INDEX – an alphabetical list of all CDP functions, each linked to its Reference Documentation. (This amalgamates the Time-Domain and Spectral A-Z Indexes.)
OPERATIONS INDEX – a sub-menu of the Main Index, this is indexed alphabetically by the operation each function does: accelerate, accumulate, envelope, filter, etc. (Sometimes referred to as the Alphabetical Index.)
COMPONENT PACKAGES – a sub-menu of the Main Index, this groups the Function Groups into 9 component packages, some of which draw from both the Time-Domain and Spectral suites. It comprises:

a Master Button Index – a Table Index for all CDP Function groups and their functions
a Descriptive Index, listing all Function Groups and their functions, with links to both.

USAGE AND PARAMETERS

The reference section for each function or process comprises a command-line Usage statement and a list of Modes (where applicable) and Parameters, followed by a description of the process and (usually) suggestions for Musical Applications.

Usage decribes what you type on the command-line (if using the Command Line), or what is assembled by one of the User Interfaces (GUIs - see below).

Modes represent different aspects of the process. Not all functions have them, and sometimes they are radically different from each other; some are more like separate functions.

Parameters are the controls you have over the process and are the key to understanding what the function does. They typically have a single numerical value or the name of a breakpoint text file containing time-varying values. Some require a specialist text data file or text code: see the File Formats page for an explanation of these.

For further details, see the Technical Glossary article on the Command Line.

USER INTERFACES

Most users will probably run CDP software via a graphic user interface (GUI). The two main GUIs for the whole CDP system are Sound Loom (PC and MAC) and Soundshaper (PC). Both of these have:

access to a comprehensive set of CDP processes
built-in knowledge of CDP parameters and their ranges
presets for storing parameter settings (called 'Patches' in SoundLoom)
facilities to store and run multi-process patches (called 'Instruments' in SoundLoom)
a graphical breakpoint editor
a Table Editor (Sound Loom) / Data Editor (Soundshaper) for massaging numerical data
a means of keeping text records of what you do in each working session

SoundLoom has its own soundfile editor, while Soundshaper links to your editor of choice. SoundLoom has developed a Test Bed for new processes. Soundshaper has concentrated on ease of use, with channel-independent input and automatic conversion of CDP file types.

A third GUI, called simply CDP Interface, has also been developed for use within the RENOISE program (MAC, PC and Linux). This has the advantage of working within a DAW environment, but appears to run single functions only and does not yet support all CDP processes.

Other graphic programs are listed on the GRAPHIC page, with links to further information and reference manuals.

CHARTS, TUTORIALS and GUIDES

The CHARTS page links to several charts and glossaries that give further background and reference material.

Finally, the TUTORIALS page links to several Tutorials, Workshops and Guides which should also help you understand the CDP system. In particular, the 12-step Tutorial is a helpful introduction for newcomers to CDP and the Texture Workshop presents a carefully prepared set of introductory examples for the TEXTURE functions.