Questions tagged [speech-recognition]
Speech recognition is the process of converting the spoken word to text, usually without regard to a particular speaker (which is more commonly referred to as "voice recognition").
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849 views
how does this equation correspond to smoothing?
Please help me understand smoothing of data. This is a follow up to my previous question posted here. Especially the top answer by Junuxx where he says a way of smoothing a function $f(x)$ is:
$$
f'[...
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1answer
3k views
Using HMM for speech recognition
I'm trying to understand how speech recognition works, when using HMM. I know this post is very long, but that's mainly because I'm a complete beginner, and I since I have no idea what is clear and ...
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1answer
5k views
What's the correct graphical interpretation of a series of MFCC vectors?
I'm studying speech-recognition, in particular the use of MFCC for feature extraction. All examples I've found online tend to graph a series of MFCC extracted from a particular utterance as follows (...
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1answer
4k views
Speech recognition using MFCC and DTW(Dynamic Time Warping)?
I know basics about DSP, and now trying to complete a project on Speech recognition. So I read as many resources as I found, and got some ideas. They are like:
take a sample sound and break it into ...
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3answers
10k views
Is there any free software that can recognize and classify sounds?
i am making a smart home automation software and i would like to know if there is any software that can recognize noises such as speech ,playing music,phone ringing etc
The exact software i am looking ...
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5answers
307 views
Remove a known wav file from recorded file
I looked at many similar questions but still cannot find an answer to my problem.
I'm playing an audio file N, while recording a man talking (b).
The problem is that the microphone gets the played ...
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1answer
880 views
What is best practice to remove static noise?
What is best practice/algorithms to remove static noise from speech ? static noise aka Stationary Signal/static noise due to
1.humming sound due to of telephonic line/channel,
2.moving Vehicle,or ...
3
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3answers
3k views
Using MFCC to an ANN Speech Recognition System
I'm developing an Artificial Neural Network based Speech Recognition System using MFCCs.
Suppose I have 260 input nodes in the ANN, and this number of nodes corresponds to the number of MFCCs that I ...
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2answers
795 views
Using k Nearest Neighbour & Dynamic Time Warping for keyword spotting
As stated in the title, I am currently researching a method using k-NN, specifically, as either an alternative or as a supplement to the DTW algorithm in keyword spotting based on MFCC. I have read ...
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2answers
3k views
Using MFCC in spoken words recognition
We're trying to implement a "simple" speech recognition application in MATLAB (isolated words from a very limited dictionary). We've been trying the following methods:
Extract MFCC coefficients for ...
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vote
1answer
741 views
Hidden Markov Models - Distinct Observation Symbols
I really, really hope someone can help me with regards to this question.
I'm trying to implement a Hidden Markov Model (based off this paper: Here
I understand the processes, but, I do not ...
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1answer
95 views
Speech Activity Detection- Adhoc Problem with multi source sounds(birds,trees,heavy air) and how to eliminate them completely
Here i will first try to put my application agenda
Typically i am sampling at 8Khz rate and filtering speech components using a BPF(digital)
now i have got the 0-4Khz components in which ...
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1answer
478 views
Continuous speech recognition with HMM
I don't understand how this works. Help would be really appreciated.
Let's say we have a 10 second sound input, we make a feature vector every 10ms - so we have 1000 vectors - $\mathbf{o}=o_1, \cdots,...
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1answer
203 views
Good methods for hardware based 1-2 word speaker independent speech recognition?
I want to detect, in real-time, a 1-2 word spoken phrase within continuous speech, speaker independently, in hardware. The smaller the number of gates the better.
What is the best way to do this? Are ...
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1answer
58 views
Removing background noise algorithm
What is the algorithm for removing background noise from an audio clip of human speech? Say I have a 10 second audio clip of somebody talking, and there is background noise of them tapping on their ...
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2answers
760 views
Initial state recognition in HMM
I am building a speech recognition system using Hidden Markov Model in python. I referred to this and this question and its answers, which were very helpful.
In my approach, I split the continuous ...
