# Leon Ellis

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**Content Feed**

Question

Find x-value of cfit function.

Good day, I am trying to find the x-value of a cfit function with a known y-value. I am however struggling as the solve() funct...

1 year ago | 1 answer | 0

### 1

answerQuestion

Ball bounce - State equations

Good day, I am currently a student assigned with a practical to simulate a ball bouncing over time. This is done by obtaining t...

1 year ago | 0 answers | 0

### 0

answersQuestion

Finding the closest match for data.

Good day, here I've plotted a power, frequency vs time domain of an audio signal. I have the power, frequency and time valu...

1 year ago | 0 answers | 0

### 0

answersQuestion

Identify words using time-frequency characteristics.

Good day, my task is to do word identification. I have used the pspectrum spectrogram function in order to aquire the power, ti...

1 year ago | 1 answer | 0

### 1

answerQuestion

Word comparison and Identification.

Good day all, I'm trying to compare words and find which word is most likely to have been said usaing the immse() (mean square e...

1 year ago | 1 answer | 0

### 1

answerQuestion

Word comparison using frequency domain.

Good day, I've managed to get the following from a sound wave using the FFT function: The red circles are the peak values fou...

1 year ago | 0 answers | 0

### 0

answersQuestion

Word recognition power frequency domain

(Best to use this code in a livescript I think) Hi, so my assignment is word recognition. As I understand we must take the sou...

1 year ago | 1 answer | 0

### 1

answerQuestion

App designer user input

Good day, I couldn't find any example of this and am also not sure if it is possible. My goal is to allow the user to input a w...

1 year ago | 2 answers | 0

### 2

answersQuestion

FFT of sound wave frequency graph

Good day, I am plotting the sound wave in the frequincy domain and applying a low pass filter in the time and frequincy domain. ...

1 year ago | 1 answer | 0

### 1

answerQuestion

Sending one digit variable serially

Good day, I'm trying to send the variable x through serial to my arduino. The only problem is, when i monitor my serialport, th...

1 year ago | 0 answers | 0

### 0

answersQuestion

fopen of serial object

Good day, I'm trying to open my serialport to connect and write data to my arduino uno mcu. However I keep getting an error. M...

1 year ago | 1 answer | 0

### 1

answerSerial communication with device error

Solved: I just had to delete or close to variable each time.

1 year ago | 0

| accepted

Question

Serial communication with device error

Good day, I'm trying to serially communicate with my FT232RL via COM1 port, however I keep getting an error. This is my code: ...

1 year ago | 1 answer | 0

### 1

answerQuestion

Sound processing dividing words

Good day, I'm audioreading a audio file with words said seperately, I.G, "One, two, three, four, five, six" till twenty. I plot...

1 year ago | 1 answer | 0

### 1

answerQuestion

Finding end of words in signal

Good day, I have a sound signal, which i want to find the end of each word said in that sound signal. So like, I want to find t...

1 year ago | 1 answer | 0

### 1

answerQuestion

Creating new arrays under conditions.

So what I want to do is the following: I have 2 vectors: Start() and stop() containing starting points of a signal and ending p...

1 year ago | 1 answer | 0

### 1

answerQuestion

Matlab envelope function help

Good day, my goal is to use the envelope() function to take sound signals and plot it's outskurts, so only it's amplitudes. Giv...

2 years ago | 1 answer | 0

### 1

answerQuestion

Creating 2 new arrays for given condition

Good day, I'm trying to write an algorithm that goes as follows: So I have y values (y) and corresponding time values (tTrans)...

2 years ago | 1 answer | 0

### 1

answerQuestion

Speech recognition separating words.

Good day, my task is to create a program that allows the user to record his/her voice and say a few words with pauses inbetween....

2 years ago | 1 answer | 0

### 1

answerQuestion

copying specific elements of an array to another.

Hi, I want to copy certain values from an array with a known size to an array with an unspesified size based on the critaria. ...

2 years ago | 2 answers | 0

### 2

answersQuestion

Isolating words in speech

Good day, my task is to say 20 words into my microphone on matlab and to create an algorithm of some sorts in order to take the ...

2 years ago | 0 answers | 1

### 0

answersQuestion

Matlab integral funtion error

Hi, I can't seem to get the integral function to work correctly. syms x z=1/(3-1) f=@(x)(x.*exp((x.^2)-1))/sin(x) fi=integr...

2 years ago | 3 answers | 0

### 3

answersQuestion

Numerical function invalid expression

I want to defind a function numerically. The function is ((e^2x)*tan(x))/x^3). I'm using h=@(x)exp(2x).*tan(x)./x.^3 to defind...

2 years ago | 1 answer | 0