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Brian Hemmat


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MathWorks

30 total contributions since 2018

Brian Hemmat's Badges

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Answered
MFCC into feature vector
The mfcc function returns mel frequnecy cepstral coefficients (MFCC) over time. That is, it separates the audio into short wind...

15 days ago | 0

| accepted

Answered
Why is the Reverberator output a two-column matrix.
The two columns represent the left and right channels of a stereo recording. The reverberator object is intended to mimic an aco...

15 days ago | 0

| accepted

Answered
Unrecognized function or variable 'helperExtractAuditoryFeatures'
Hi Divya, Please click the "open this example" button on the top right corner of the example. The "helperExtractAuditoryFeature...

15 days ago | 0

Answered
HRTF plugin Filter error
Hi Pablo, The following code compiles for me (and should for you). Initialize the Numerator's with the correct size at constr...

1 month ago | 0

| accepted

Answered
Averaging Values in a Matrix with Nans
I think this is what you want to do: mean(Strain,2,'omitnan')

2 months ago | 1

Answered
I want to identify male or female voice in a speech signal
Audio Toolbox provides an example: Classify Gender Using LSTM Networks

3 months ago | 0

Answered
Speaker recognition
Audio Toolbox provides several examples for speaker recognition (both identification and verification): Speaker Identification ...

4 months ago | 0

Answered
Voice recogntion /Speaker identification
Audio Toolbox provides examples for speaker verification: A simple one using Gaussian mixture models and a more complicated one ...

4 months ago | 0

Answered
Speaker Recognition using MFCC and GMM
Audio Toolbox provides several examples for speaker recognition (both identification and verification): Speaker Identification ...

4 months ago | 0

Answered
C-Code Error: Pitch Method Conversion to C Won't Work
Hi David, You're specifying a couple name-value pairs that aren't actually parameters of the pitch function (NumChannels, Sampl...

4 months ago | 0

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Answered
Speech Recogntion Demo
Audio Toolbox includes examples for speech recognition using CNNs and wavelet scattering: Speech Command Recognition Using Deep...

5 months ago | 0

Answered
calculating the MFCC and BFCC for a signal
Starting from R2018a, you can use the mfcc function in Audio Toolbox to extract mel-frequency cepstral coefficients. To design ...

5 months ago | 0

Answered
Can we identify a speaker using his/her cepstral coefficients calculated from MFCC?
Audio Toolbox provides an example for this application: Speaker Identification Using Pitch and MFCC.

5 months ago | 0

Answered
How to extract features from speech signals using MFCC?
Starting from R2018a, you can use the mfcc function in Audio Toolbox to extract mel-frequency cepstral coefficients.

5 months ago | 0

Answered
Text to speech synthesis matlab code
Audio Toolbox (R2019a or later) supports calling into popular 3rd-party APIs for speech synthesis: https://www.mathworks.com/ma...

5 months ago | 0

Solved


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

6 months ago

Answered
how can i compare two audio files?
Euclidean distance between feature vectors is a good start for analyzing the difference between audio files. However, there are ...

6 months ago | 0

Answered
Speech recognition (Isolated words 1-9)
Spoken Digit Recognition with Wavelet Scattering and Deep Learning illustrates two diferent approaches to spoken digit recogniti...

6 months ago | 0

Answered
mfcc for wav file
When the mfcc function uses the default parameters, it outputs 13 mel-frequency cepstral coefficients, and appends the log-energ...

6 months ago | 0

Answered
how to change female voice to male voice using matlab?
If you're interested in just shifting the pitch (which will get you most of the way there in terms of perception of male vs. fem...

6 months ago | 0

Answered
Speech/Music Discrimination
As a start, take a look at the spectralCentroid function in Audio Toolbox™. This tutorial also covers some aspects of the area...

7 months ago | 0

Answered
How to stop sound function from Audio toolbox?
Calling "clear sound" will stop the playback. >> [audio,fs] = audioread('Counting-16-44p1-mono-15secs.wav'); >> sound(audio,fs...

7 months ago | 0

| accepted

Answered
Only thing that I want to control is speed. not pitch.
Starting in R2019b, Audio Toolbox provides functions to shift pitch and time-stretch audio: shiftPitch, stretchAudio.

7 months ago | 0

Answered
Spectral Centroid - get the same results in matlab and python
Hi Mariusz, Below is some code showing how you can get the FeatureSpectralCentroid function in your link to give close to the s...

7 months ago | 0

Answered
audioFeatureExtractor function not found
If you are only interested in MFCC extraction, you can use the mfcc function, which Audio Toolbox introduced in R2018a. Here's h...

7 months ago | 0

Answered
How to gender recognition with fft
The Audio Toolbox includes an example on gender identification using LSTM networks: https://www.mathworks.com/help/audio/exampl...

1 year ago | 0

Answered
pitch calculation for speech signal
To calculate the LP residual, use the <https://www.mathworks.com/help/signal/ref/lpc.html lpc> function in the Signal Processing...

2 years ago | 0

Answered
How can I alter the speed of a wav file without altering its pitch?
Typically, you would use a phase vocoder. The Pitch Shifting and Time Dilation Using a Phase Vocoder example in Audio Toolbox wa...

2 years ago | 0

Answered
pitch shift of speech
<https://www.mathworks.com/help/audio/examples/delay-based-pitch-shifter.html Delay-Based Pitch Shifter> in <https://www.mathwor...

2 years ago | 1

Answered
Pitch of audio signal
Use the <https://www.mathworks.com/help/audio/ref/pitch.html pitch> function available in Audio System Toolbox version 18a or la...

2 years ago | 0