www.cirrus.com

DSP Conductor

™

Development Software

22 mm

IC dimensions

(pin-to-pin nominal)

144-pin LQFP

22 mm

DSP Conductor

DSP Conductor Software – Graphical Audio

Programming Tool for Cirrus Logic CobraNet

™

ICs

Enables Innovative Distributed Audio Processing Applications for Networked Audio Systems

With the advent of digital audio networking,

new and exciting audio systems are being

implemented that place the audio processing

closer to the actual users of the audio

system. These advanced audio products

add new features and capabilities to audio

systems, while improving system flexibility.

With the introduction of the DSP Conductor

development software, audio product

designers can easily combine the industry-

leading digital audio networking capabilities

of CobraNet with the power of Cirrus Logic

DSP processing on a single IC.

The DSP

Conductor software is a

comprehensive

development kit expressly

developed to support the CS4961xx family

of CobraNet + DSP

devices. Its easy-to-use

graphical interface speeds time to market

and lowers system costs by greatly

simplifying all aspects of the development

process, from design to test. Just drag and

drop to create sophisticated, full-featured,

CobraNet-enabled DSP

systems with

greater efficiency and much lower

development cost. The DSP Conductor tool

targets CobraNet’

s new CS4961xx IC, which

provides a unique combination of CobraNet

digital audio networking over Ethernet and a

high-performance, 32-bit, fixed-point audio

DSP from Cirrus Logic. Running on any

Windows XP-based PC, DSP Conductor

software communicates with the CS4961xx

via the standard CobraNet Ethernet

interface. Audio processing within the

DSP Conductor tool is accomplished using

DSP function blocks known as elements

(algorithms) which can

have inputs, outputs,

controls, and indicators. A comprehensive

library of these elements comes included

with DSP

Conductor software to enable

complete system designs. The included

audio elements are graphically “wired”

together on the software tool’

s palette

screen to create audio signal processing

paths. The elements can be combined in

a variety of ways to create unique audio

processing solutions and can also be

adjusted in real time to produce high-quality

audio system solutions.

Overview

Audio processing is accomplished using DSP function blocks known as

elements (algorithms) which can have inputs, outputs, controls, and

indicators. As part of a comprehensive library, each of these elements can

be dragged from a menu, dropped into a design and connected together to

easily complete a system design. Elements can be combined in a variety of

ways to create unique audio processing designs and can also be adjusted

in real-time to produce high-quality solutions to a wide variety of audio

processing needs.

• Multitap delay line – Audio delays

up to 100ms in increments of one

sample period.

• Parametric equalizer –Bi-quad with

gain, frequency and bandwidth control.

Multiband parametric equalizers can be

built by cascading multiple instances of

this element.

• Sine generator – High-precision test

tone generator.

• Gain control – Attenuate or boost

signals up to 12 dB.

• Combination peak and RMS meter –

Accurate signal level metering with

peak-hold capability

• NxM mixer – Configurable full featured,

fully interconnected audio mixer block.

• NxM router – Configurable unity gain

router with one-to-many capability.

• Shelving equalizers – Tone controls

with frequency and gain controls.

• White noise generator – Broad

spectrum noise source.

• Signal presence detector – Lights an

indicator when audio level exceeds

user-set threshold.

• Multiple input RMS meter – Efficient

multichannel metering.

• Elements aiding in software and

hardware test: LMS adaptive filter,

N-bit white noise generator, white

noise verifier and delay detector

• Pink noise generator – Equal

power-per-octave noise source

useful for acoustical testing.

• Compressor/limiter – Dynamics control

with adjustable response characteristics

and time constants. Side-chain inputs

and separate detector blocks enable

creation of multichannel and multiband

dynamics processors.

• Low- and high-pass filters – Building

block for digital crossover networks.

A variety of response curves and filter

slopes supported.

Audio Element Library

DSP Conductor software, a tool that accompanies Cirrus Logic’s CS4961xx family of CobraNet Interface Processors, can be

downloaded (upon board registration and license agreement acceptance) at www.cirrus.com/cobranetsoftware. The tool is free of

charge and does not carry any royalties associated with products created using DSP Conductor software.

The hardware platform for

using the DSP Conductor tool in a development environment is the CDB496122-EV2 CobraNet evaluation kit which can easily be

obtained by contacting your local Cirrus Logic sales representative. The CDB496122-EV2 kit comes with two CobraNet evaluation

boards, two CPB496122-CM2-FB modules, one CAT5 crossover cable, two Phoenix-style audio connectors, and the “EV2 User’s

Manual” document.

To locate your nearest Cirrus Logic sales representative, please go to

http://www.cirrus.com/en/contacts/sales/index.html

Where to get DSP Conductor Software

Cirrus Logic, Inc. · 2901 Via Fortuna · Austin TX 78746 USA · T 512-851-4000 · T 800-888-5016 · F 512-851-4977

trademarks of Cirrus Logic, Inc. Other brand and product names may be trademarks or service marks of their respective owners.

www.cirrus.com

• Distributed audio processing

solutions become a reality using

DSP Conductor software

• Reduces time-to-market for complex

audio processing solutions

• Enables complete audio system

design for the CobraNet™ CS4961xx

• Easy-to-use graphically oriented

interface to speed implementation

•

Fast “drag-and-drop” creation of audio

rocessing and signal paths

• Comprehensive library of DSP functions

allow complex audio system design

• Graphic-based controls enable real-time

adjustments to audio processing system

• Signal path integrity automatically

verified with the click of a button

•

DSP resource usage automatically

alculated with the click of a button

• Final DSP code is loaded directly to

the CS4961xx (upon registering the

development platform and receiving

a security ‘key’)

Today, digital signal processing requirements within audio systems are becoming increasingly sophisticated. By combining CobraNet

technology with an on-board, 32-bit programmable DSP

, Cirrus Logic is opening up an exciting new world of decentralized digital

signal processing applications. The potential for innovative applications taking advantage of digital signal processing spread throughout

the network (such as network-connected ceiling speakers in a commercial building, performing ambient noise-level detecting and

sound-masking processing) is revolutionary. DSP Conductor software enables audio system product engineers to meet their entire signal

processing needs without having to write a single line of DSP code and allows them to quickly and easily implement complex signal

processing features. This tool liberates the DSP experts to focus their efforts on the truly differentiating aspects of their audio products.

The Solution

DSP Conductor Software Features & Benefits