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Februari 2016
Hi all,
I got a question form a student on how to answer the questions about the analysis windows in Lab1. I answer here so that everybody can see.
As we discussed during the lecture, feature frames are computed over short windows of speech samples. The window is then shifted in time to compute the next feature vector and the shift may be smaller than the window length (so that contiguous windows overlap in time).
The number of speech samples per second is given by the sampling frequency. The length of the window and its shift are given by the corresponding configuration parameters. You should be able to relate these three quantities to determine how many samples each window contains and how many milliseconds (or if you wish samples) the windows overlap.
To answer the question about how many feature vectors you have in a typical utterance, you should first decide how long is a typical utterance (you can have a look with wavesurfer at the ones you have created). Then you have to determine which parameter is relevant in this case among the ones mentioned above. You can safely disregard boundary effects at the beginning or end of the utterance because we are talking about a approximate number of feature vectors.
Hope this clarifies the questions
Visa tidigare händelser (1)
Januari 2016
Hi,
I am writing this as an example on how to write comments that are visible without login. You choose "The whole world" in the "Can read:" field. This could be a way to solve the problem with the students from Uppsala that have no access to KTH social.
Visa tidigare händelser (2)
Hi all,
I saw that many are willing to run the lab on their own Ubuntu computers. Here are building instructions for HTK (version 3.4.1) that worked for me on Ubuntu 14.04:
sudo apt-get install libc6-dev-i386
./configure --disable-hslab --disable-hlmtools --prefix=/opt/htk
make all
sudo mkdir /opt/htk
sudo make install
Then you will need to add the path to your PATH variable, for example with adding this line
in bash:
export PATH=/opt/htk/bin:$PATH
in tcsh:
setenv PATH=/opt/htk/bin:$PATH
Test if it works by running any of the HTK commands, for example HList
For the lab to work, you will also need to install Wavesurfer with:
apt-get install libsnack-alsa wavesurfer
Finally, if you do the lab on your computer, disregard the command "source config/environment" from the lab instructions
Good luck!
Visa tidigare händelser (4)
Lärare
Giampiero Salvi
korrigerade
28 januari 2016
Hi all,
I saw that many are willing to run the lab on their own Ubuntu computers. Here are building instructions that worked for me on Ubuntu 14.04:
sudo apt-get install libc6-dev-i386./configure --disable-hslab --disable-hlmtools --prefix=/opt/htkmake allsudo mkdir /opt/htksudo make install
Then you will need to add the path to your PATH variable, for example with adding this line
in bash:
export PATH=/opt/htk/bin:$PATH
in tcsh:
setenv PATH=/opt/htk/bin:$PATH
Test if it works by running any of the HTK commands, for example HList
For the lab to work, you will also need to install Wavesurfer with:¶
apt-get install libsnack-alsa wavesurfer¶
Good luck!¶
Lärare
Giampiero Salvi
korrigerade
28 januari 2016
Hi all,
I saw that many are willing to run the lab on their own Ubuntu computers. Here are building instructions that worked for me on Ubuntu 14.04:
sudo apt-get install libc6-dev-i386./configure --disable-hslab --disable-hlmtools --prefix=/opt/htkmake allsudo mkdir /opt/htksudo make install
Then you will need to add the path to your PATH variable, for example with adding this line
in bash:
export PATH=/opt/htk/bin:$PATH
in tcsh:
setenv PATH=/opt/htk/bin:$PATH
Test if it works by running any of the HTK commands, for example HList
For the lab to work, you will also need to install Wavesurfer with:
apt-get install libsnack-alsa wavesurfer
Finally, if you do the lab on your computer, disregard the command "source config/environment" from the lab instructions¶
¶
Good luck!
Lärare
Giampiero Salvi
korrigerade
28 januari 2016
Hi all,
I saw that many are willing to run the lab on their own Ubuntu computers. Here are building instructions for HTK (version 3.4.1) that worked for me on Ubuntu 14.04:
sudo apt-get install libc6-dev-i386./configure --disable-hslab --disable-hlmtools --prefix=/opt/htkmake allsudo mkdir /opt/htksudo make install
Then you will need to add the path to your PATH variable, for example with adding this line
in bash:
export PATH=/opt/htk/bin:$PATH
in tcsh:
setenv PATH=/opt/htk/bin:$PATH
Test if it works by running any of the HTK commands, for example HList
For the lab to work, you will also need to install Wavesurfer with:
apt-get install libsnack-alsa wavesurfer
Finally, if you do the lab on your computer, disregard the command "source config/environment" from the lab instructions
Good luck!
Another question is about the topology of the HMM.
Here I just want you to draw a graph indicating the states of the HMM and which transitions between them are allowed according to the transition matrix in the prototype file.