Reading, resampling and writing audio files

Question

Rahul Jaiswal 2017-8-3

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/351485-reading-resampling-and-writing-audio-files

评论： shweta singh 2020-5-30

I have multiple audio files in one folder having file format like C_01_ECHO_FA.wav, C_01_ECHO_FG.wav, C_01_ECHO_MK.wav, C_01_ECHO_ML.wav and again C_02_ECHO_FA.wav, C_02_ECHO_FG.wav, C_02_ECHO_MK.wav, C_02_ECHO_ML.wav and so on like this... The sampling freq of these files are 48k. I need to read all the audio files one by one and resample them to 8k and then write all output audio files in different folder. For the single file, i did like this but i need to do for all. [y,Fs] = audioread('C_01_ECHO_FA.wav'); y_resamp = resample(y,8000,48000); audiowrite('C_01_ECHO_FA_new.wav',y_resamp,8000);

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Deepak Gala 2017-8-4

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/351485-reading-resampling-and-writing-audio-files#answer_276724

This should do what you want.

[y,fs]=audioread('file48000.wav'); audiowrite('file8000.wav',y,8000);

2 个评论
显示无隐藏无

Rahul Jaiswal 2017-8-4

Thank you for the answer. But i can do with the single file. I have say, 10 different files in one folder. I need to read them one by one automatically, resample each one and write those files in another folder. Mainly the problem is reading all wav files one by one from one folder automatically and writing them one by one in another folder after resampling.

Laureano Moro 2018-8-28

The resampling is missing in this answer. The new file 'file8000.wav' will not be resampled at 8kHz unless y = resample(y,8000,48000); is included before the use of audiowrite.

请先登录，再进行评论。

Answer 2

Laureano Moro 2018-8-28

4
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/351485-reading-resampling-and-writing-audio-files#answer_334468

编辑：Laureano Moro 2018-8-28

在 MATLAB Online 中打开

To do it automatically:

sAudioFolder='MyAudiofolder'; eFiles=dir(fullfile(sAudioFolder,'*.wav'));

for i=1:length(eFiles)

    sAudioFile=fullfile(sAudioFolder,eFiles(i).name);
    [y,Fs] = audioread(sAudioFile); y_resamp = resample(y,8000,48000);
    sAudioFileOut=fullfile(sAudioFolder,[strrep(eFiles(i).name,'.wav','') '_new.wav']);
    audiowrite(sAudioFileOut,y_resamp,8000);

end

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

shweta singh 2020-5-30

very good code

请先登录，再进行评论。

Answer 3

Deepak Gala 2017-8-7

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/351485-reading-resampling-and-writing-audio-files#answer_277145

在 MATLAB Online 中打开

This should work!

for i=1:1000
    FILE1=sprintf('file48000_%d.wav',i);
    FILE2=sprintf('file8000_%d.wav',i);
      FOLDER_NAME = 'C:\.......\ReadingFolder';
      userpath(FOLDER_NAME);
      [y,fs]=audioread(FILE1);
      FOLDER_NAME = 'C:\.......\WritingFolder';
      userpath(FOLDER_NAME);
      audiowrite(FILE2,y,8000);
  end