code for triangular filter banks and MFCC

2021 7 11
1 个回答
回答已采纳
更新时间：2021 7 14
10 次查看（30 天）

0 个投票

hi,
I having problem to create code for triangular filter banks and mfcc for the attached audio file. I would be much gratful if you could help me .im so deperate. Was working on it since a month but my code did not work.
Thank you
Kinds
Dan

请先登录，再回答此问题。

 采纳的回答

jibrahim
jibrahim 2021-7-12

0 个投票

There are two functions in Audio Toolbox that you can use for this task:
mfcc: Computes MFCC codefficients for you
designAuditoryFilterBank: Designs the triangular filter bank

3 个评论
显示 1更早的评论 隐藏 1更早的评论

DOORYODHUN AHKU
DOORYODHUN AHKU 2021-7-13
Thank you Ibrahim.
Kind Rgds
Dan
DOORYODHUN AHKU
DOORYODHUN AHKU 2021-7-14
Hi Ibrahim,
I will need a bit of help.
I did the following below and i got an error message saying 'designAuditoryFilterBank' requires Audio Toolbox.
Could you please advise
Thank you
Dan
fs = 48000;
fb = designAuditoryFilterBank(fs)
filterBank = designAuditoryFilterBank(fs)
numBands = size(fb,1) %#ok<NASGU>
numBands = 32
numPoints = size(fb,2) %#ok<NASGU>
numPoints = 513
[audioIn,fs] = audioread("mif_02484_00047480027.wav");
win = hamming(1024,"periodic");
noverlap = 512;
fftLength = 1024;
[S,F,t] = stft(audioIn,fs, ...
"Window",win, ...
"OverlapLength",noverlap, ...
"FFTLength",fftLength, ...
"FrequencyRange","onesided");
PowerSpectrum = S.*conj(S);
[fb,cf] = designAuditoryFilterBank(fs, ...
"FFTLength",fftLength, ...
"NumBands",numBands, ...
"FrequencyRange",range, ...
"Normalization",normalization);
plot(F,fb.')
grid on
title("Mel Filter Bank")
xlabel("Frequency (Hz)")
jibrahim
jibrahim 2021-7-14
Dan,
the function is part of the Audio Toolbox product, so you need Audio Toolbox to be available.

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Filter Banks 的更多信息

产品

版本

R2020b

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by