Speech recognition Coding

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somebody please tell me how do i go about speech recognition coding.

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Sourav Newatia 2020-9-21

Search on google

SUHAS 2022-11-11

移动：DGM 2022-11-12

i need the matlab coding for speech recogniton

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Answer 1

Raviteja 2011-2-4

3 个投票

First you need fundamentals of speech processing. Witch includes speech signal basic sounds and features. DSP techniques like, FFT, Windowing,STFT.

Some basic signal processing tasks like finding energy, spectrum of speech, autocorrelation, zero crossing detection, silence speech removal techniques etc. Then feature extraction from speech signals.

Feature extraction (LPC,MFCC). Then classification process of feature vectros by VQ.

Then statistical modelling like HMM, GMM.

You need to go following books "Digital processing of speech signals" by Rabinar "Fundamentals of speech recognition" by Rabinar And good books for DSP.

Mostly you read IEEE papers.

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Answer 2

Michelle Hirsch 2011-2-4

在 MATLAB Online 中打开

2 个投票

Is your goal to have speech recognition running in MATLAB, or to actually learn how to implement the algorithm?

If you just want to be able to use speech recognition in MATLAB, and you are running on Windows, you can pretty easily just incorporate the existing Windows capabilities using the MATLAB interface to .NET.

Here's some code my friend Jiro happened to pass around just the other day for this exact task. (Paste into a file in the editor and save).

function rec = speechrecognition
% Add assembly
NET.addAssembly('System.Speech');
% Construct engine
rec = System.Speech.Recognition.SpeechRecognitionEngine;
rec.SetInputToDefaultAudioDevice;
rec.LoadGrammar(System.Speech.Recognition.DictationGrammar);
% Define listener callback
addlistener(rec, 'SpeechRecognized', @recognizedFcn);
% Start recognition
rec.RecognizeAsync(System.Speech.Recognition.RecognizeMode.Multiple);
% Callback
function recognizedFcn(obj, e)
% Get text
txt = char(e.Result.Text);
% Split into words
w = regexp(txt, '\s', 'split');
if length(w) > 1
    % Look for the occurrence of the phrase "search for"
    idx = find(strcmp(w(1:end-1), 'search') & ...
        strcmp(w(2:end), 'for'), 1, 'first');
    if ~isempty(idx) && length(w) >= idx+2
        % The words after are the search terms
        searchTerm = sprintf('%s+', w{idx+2:end});
        searchTerm(end) = '';
          % Search on the web
          web(['http://www.google.com/search?q=', searchTerm]);
          fprintf(2, 'search for "%s"\n', strrep(searchTerm, '+', ' '));
      else
          %disp(txt)
      end
  elseif length(w) == 1 && strcmpi(w{1}, 'stop')
      obj.RecognizeAsyncStop;
      obj.delete;
      %disp(txt);
      disp('Stopping Speech Recognition. Thank you for using!');
  else
      %disp(txt);
  end

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Frandy 2012-4-15

Hello I'm working on a project that involves using speech recognition. Now I tried to use your code but I am not sure on the actual process in which to have the code actually work. Do you mind explain?

Steven Dakin 2021-1-10

Some operational example code that uses this approach would be vey useful!

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Answer 3

Nada Gamal 2011-4-20

0 个投票

Hi Raviteja , I made all steps of speech recognition except of classification because i used Elcudien Distance and calculate the minium distance to the templates .And i have a problem now in how can i implement Hidden Markove model in speech recognition . i don't understand this algrothim . Thanks a lot :) Best Regards, Nada Gamal

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chan wei 2015-11-7

so do I!

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Answer 4

veni 2016-8-24

0 个投票

how to write the speech recognisation in matlab coding? how to record the speech in matlab?

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Walter Roberson 2016-8-25

See audiorecorder() to record the speech. http://www.mathworks.com/help/matlab/ref/audiorecorder.html

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Answer 5

Neha Tonpe 2022-11-25

编辑：Walter Roberson 2022-11-25

在 MATLAB Online 中打开

0 个投票

function rec = speechrecognition
% Add assembly
NET.addAssembly('System.Speech');
% Construct engine
rec = System.Speech.Recognition.SpeechRecognitionEngine;
rec.SetInputToDefaultAudioDevice;
rec.LoadGrammar(System.Speech.Recognition.DictationGrammar);
% Define listener callback
addlistener(rec, 'SpeechRecognized', @recognizedFcn);
% Start recognition
rec.RecognizeAsync(System.Speech.Recognition.RecognizeMode.Multiple);
% Callback
function recognizedFcn(obj, e)
% Get text
txt = char(e.Result.Text);
% Split into words
w = regexp(txt, '\s', 'split');
if length(w) > 1
    % Look for the occurrence of the phrase "search for"
    idx = find(strcmp(w(1:end-1), 'search') & ...
        strcmp(w(2:end), 'for'), 1, 'first');
    if ~isempty(idx) && length(w) >= idx+2
        % The words after are the search terms
        searchTerm = sprintf('%s+', w{idx+2:end});
        searchTerm(end) = '';
        % Search on the web
        web(['http://www.google.com/search?q=', searchTerm]);
        fprintf(2, 'search for "%s"\n', strrep(searchTerm, '+', ' '));
    else
        %disp(txt)
    end
elseif length(w) == 1 && strcmpi(w{1}, 'stop')
    obj.RecognizeAsyncStop;
    obj.delete;
    %disp(txt);
    disp('Stopping Speech Recognition. Thank you for using!');
else
    %disp(txt);
end

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Answer 6

Lavuri 2022-12-26

在 MATLAB Online 中打开

0 个投票

function rec = speechrecognition
% Add assembly
NET.addAssembly('System.Speech');
% Construct engine
rec = System.Speech.Recognition.SpeechRecognitionEngine;
rec.SetInputToDefaultAudioDevice;
rec.LoadGrammar(System.Speech.Recognition.DictationGrammar);
% Define listener callback
addlistener(rec, 'SpeechRecognized', @recognizedFcn);
% Start recognition
rec.RecognizeAsync(System.Speech.Recognition.RecognizeMode.Multiple);
% Callback
function recognizedFcn(obj, e)
% Get text
txt = char(e.Result.Text);
% Split into words
w = regexp(txt, '\s', 'split');
if length(w) > 1
    % Look for the occurrence of the phrase "search for"
    idx = find(strcmp(w(1:end-1), 'search') & ...
        strcmp(w(2:end), 'for'), 1, 'first');
    if ~isempty(idx) && length(w) >= idx+2
        % The words after are the search terms
        searchTerm = sprintf('%s+', w{idx+2:end});
        searchTerm(end) = '';
        % Search on the web
        web(['http://www.google.com/search?q=', searchTerm]);
        fprintf(2, 'search for "%s"\n', strrep(searchTerm, '+', ' '));
    else
        %disp(txt)
    end
elseif length(w) == 1 && strcmpi(w{1}, 'stop')
    obj.RecognizeAsyncStop;
    obj.delete;
    %disp(txt);
    disp('Stopping Speech Recognition. Thank you for using!');
else
    %disp(txt);
end

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Answer 7

pathakunta 2024-1-26

0 个投票

First you need fundamentals of speech processing. Witch includes speech signal basic sounds and features. DSP techniques like, FFT, Windowing,STFT. Some basic signal processing tasks like finding energy, spectrum of speech, autocorrelation, zero crossing detection, silence speech removal techniques etc. Then feature extraction from speech signals. Feature extraction (LPC,MFCC). Then classification process of feature vectros by VQ. Then statistical modelling like HMM, GMM. You need to go following books "Digital processing of speech signals" by Rabinar "Fundamentals of speech recognition" by Rabinar And good books for DSP. Mostly you read IEEE papers.

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Answer 8

Praveen 2024-10-8

0 个投票

function rec = speechrecognition

% Add assembly

NET.addAssembly('System.Speech');

% Construct engine

rec = System.Speech.Recognition.SpeechRecognitionEngine;

rec.SetInputToDefaultAudioDevice;

rec.LoadGrammar(System.Speech.Recognition.DictationGrammar);

% Define listener callback

addlistener(rec, 'SpeechRecognized', @recognizedFcn);

% Start recognition

rec.RecognizeAsync(System.Speech.Recognition.RecognizeMode.Multiple);

% Callback

function recognizedFcn(obj, e)

% Get text

txt = char(e.Result.Text);

% Split into words

w = regexp(txt, '\s', 'split');

if length(w) > 1

% Look for the occurrence of the phrase "search for"

idx = find(strcmp(w(1:end-1), 'search') & ...

strcmp(w(2:end), 'for'), 1, 'first');

if ~isempty(idx) && length(w) >= idx+2

% The words after are the search terms

searchTerm = sprintf('%s+', w{idx+2:end});

searchTerm(end) = '';

% Search on the web

web(['http://www.google.com/search?q=', searchTerm]);

fprintf(2, 'search for "%s"\n', strrep(searchTerm, '+', ' '));

else

%disp(txt)

end

elseif length(w) == 1 && strcmpi(w{1}, 'stop')

obj.RecognizeAsyncStop;

obj.delete;

%disp(txt);

disp('Stopping Speech Recognition. Thank you for using!');

else

%disp(txt);

end

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Speech recognition Coding

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