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This module shows how to implement the echo and reverberation effects using the DSK6713. The effects are simulated using Simulink. Those simualtion models are used to generate the DSP code for the real-time implementation.


Echo and Reverberation are two of the simplest applications of Digital Signal Processing (DSP). This laboratory shows how models of Echo and Reverberation can be designed using MATLAB and Simulink, and run them in real-time on the Texas Instruments C6000 DSPs.


  • Design models of Echo and Reverberation for the Texas Instruments C6000 family of DSP devices using MATLAB® and Simulink®.
  • Modify an existing Simulink model.
  • Run the model in real-time on the Texas Instruments C6713 DSK.


Beginner - Assumes only very basic knowledge of MATLAB and Simulink. It is suitable for students with limited knowledge of Texas Instruments DSPs.

Hardware and software requirements

This laboratory was originally developed using the following hardware and software:

  • MATLAB R2006b with Embedded Target for TI C6000.
  • Code Composer Studio (CCS) v3.1
  • Texas Instruments C6713 DSK hardware
  • Microphone and computer loudspeakers/headphones


We shall start by running the Echo and Reverberation Simulink models. These use .wav files as the inputs.

Echo using wave file

From MATLAB, open EchoUsingWav.mdl

Echo using .wav File

Changing the delay time

Double-click on the “Delay” block and change the “Delay (samples)” to a different value.

Changing the Delay Time

Run the model and hear how the effect has changed. Try a few different settings between 100 and 20000 “Delay (samples)”.

Reverberation using wave file

From MATLAB, open ReverberationUsingWav.mdl

Reverberaton Using .wav File

Changing the delay time

Double-click on the “Delay” block. Change the “Delay (samples)” to a different value then run the model and listen to the effect.

Changing the gain

Double-click on the “Gain” block. Change the “Gain” to 0.95 then run the model. Listen to the effect.

Changing the Reverberation Gain


  • Why does Reverberation require a shorter delay time than echo?
  • What effect does the “Gain” block have on the stability of the reverberation system?

Real-time model for ti c6713 dsk

Texas instruments c6713 dsk setup

Texas Instruments C6713 DSK Setup

Alternatively, you can use computer loudspeakers.

Connect the C6713 hardware to a USB port of the computer and turn on the supply to the board.

If the board is powered, then the green LED lights on the board will come on during self-test.

Starting code composer studio

The stages required to implement Echo and Reverberation are now described.

Starting code composer studio

Start Code Composer Studio for C6713 DSK and use Debug ->Connect

Questions & Answers

what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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