# 7.4 Problems and future considerations in naive room response

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Conclusion of determining room inpulse responses and deconvolving the response out of a recorded signal.

We began data comparison by observing the differences between the theoretical impulse responses and actual impulse responses in each room. None of the four actual responses were similar to the theoretical responses. The differences could be due the non ideality of the rooms, as the rooms were neither perfectly rectangular nor empty, while Room Demo Response assumed both of these conditions. Clipping was also neglected in the theoretical model. Clipping equalizes all signals above a certain threshold determined by the soudn card in the laptop; this non-linear effect removed information from the signal in such a way that the lost information was unrecoverable by our Fourier analysis. Commercial applications of room impulse response measurements, such as measuring the response from each seat in an orchestra hall, require a more robust theoretical model that accounts for objects in the room as well as the exact shape of a room. Such elaborate theoretical data was not necessary; we were able to access the rooms in question and find the impulse response through direct measurement.

The goal of signal deconvolution was to remove the room response on a recorded signal. However, this process also amplified the noise. Some of the noise was already prevalent in the recorded signal, as our microphones were sensitive enough to hear a group of people conversing outside with the door closed. Since the noise was already in the signal and was not entirely random it could not be easily filtered out. The deconvolution did reproduce the original signal; however the quality was significantly worse than the recorded signal. If we could record the impulse and input responses without noise, our method of deconvolution would be able to reproduce the original high quality recorded signal. Unfortunately this is not possible under normal conditions. Another attempt could also be made using a more complex deconvolution scheme, such as Wiener deconvolution. Ideally we could find a method that is either resistant to noise or removess noise entirely; this would immediately lead to better results. Perfect deconvolution would be useful in creating a clean input signal given a recorded signal regardless of recording environment. Naive deconvolution only works well with noiseless signals. Future applications of our theory would have to use more complex deconvolution methods.

where we get a research paper on Nano chemistry....?
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
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
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
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
what about nanotechnology for water purification
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
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?
what is a peer
What is meant by 'nano scale'?
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 ?
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?
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
why we need to study biomolecules, molecular biology in nanotechnology?
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
why?
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
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