Notes on Yaohong

How to Label Voice with Praat for Machine Learning

Sat, 10 Jul 2021 11:34:20 +0800

How to Label Voice with Praat for Machine Learning

1.Install

1.1 Download praat

1.Open Praat: doing Phonetics by Computer website;

2.Choose your OS system on download area in the upper left conner of website;

3.Then click the praat6150_mac.dmg or praat6150_win64.zip to download file;

For example, my os is MacOS, in my case I should download praat6150_mac.dmg and install it.

Option: You can also download the file from github, referce to Praat in github

1.2 Install Phonetic symbols

If you want to see good-quality phonetic characters on your screen and in your clipboard, you have to install the Charis SIL and/or the Doulos SIL font.

Averaging histograms

Tue, 29 Dec 2020 00:49:20 +0800

Averaging histograms

An image histogram is the number of each pixel value, which is displayed in the graph.

x axis of the graph is pixel value, range from 0 to 255;

y axis of the graph is the number of this pixel value;

1.How to averaging histograms?

Our goal is to generate a new image with a more even histogram distribution.

Some notes on Convolution Course

Thu, 21 May 2020 15:18:20 +0800

Some notes on Convolution course

What is padding?

Padding is to add some pixels to the border of the original image, such as a 6*6 image will become a 8*8 image if we add a pixel to its border.

valid convolution vs same convolution.

Valid convolution is on padding that means the actual pixels of the output image after we convole original image with filter.

Same convolution means adding padding so that the output image has the same size as its input image.

英语发音-连读和节奏

Mon, 27 Apr 2020 20:38:20 +0800

英语发音-连读和节奏

一、连读

连读指在同个意群里，前一个辅音音素结尾，后一个单词以元音音素开头，把它们连起来读。

连读本质是用更短的时间传达信息，兼顾声音辨别，更加流畅。