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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.

Introduction

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.

Objectives

  • 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.

Level

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

Simulation

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

Questions

  • 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

are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, From matlab and simulink to real-time with ti dsp's. OpenStax CNX. Jun 08, 2009 Download for free at http://cnx.org/content/col10713/1.1
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