One aspect of the Thai Alphabet cards which we chose to display a tone frequency and syllable duration marker as a colored line across a two dimensional grid.
- Purchase the Thai Alphabet Flash Cards
Method of Tone Frequency and Syllable Length Display
First, we used the Tone Shape and Approximate Frequency adapted from Naksakul (1977:106) found on page 7 of Elementary Thai for Foreigners, authors Somsonge Burusphat, Sujaritlak Deepadung, Sukhuma-Vadee khamhiran, Mahidol University, 1991.
Relative Length of Long and Short Syllables
Second, we added relative lengths to the short and long syllables, which added information. In Naksakul (1977) we are provided with a mapping of tone frequencies relative to their duration. However, (and here generally speaking, but not precisely) there are at least both short and long syllables. It appears that each tone can be both long or short, which gives 10 possible tone/length combinations.
Our modification of the frequency displays was merely to shorten the tone at the 50% mark, that is, to compress the frequency shape into half the time. This is clearly a simplification but is most helpful in terms of visually seeing and learning long and short syllables, something that is especially difficult for Native English speakers, along with the tones themselves.
Modification of Mid-Tone Short Syllable
One adaptation we made was to the short mid-tone. It appeared visually as if it had a slight downward trajectory, but upon listening to native speakers that is not accurate. We decided that the tone frequency was being truncated before finishing. We revised this image by segmenting at the 75% mark of the long tone, and then shortening the tone length as we had done with all other short tones.
- Purchase the Thai Alphabet Flash Cards


There are Twenty-four Low consonants in Thai. Some are less common than others but all are used in some words. In a few cases the letters are common in place names and Thai names and nicknames. It is common to learn Low consonants in sets (we choose to do 3 sets of 8 consonants, in alphabetical order), and to start the Low consonants after the first set of 7 common Mid consonants.
There are Twenty-four Low consonants in Thai. Some are less common than others but all are used in some words. In a few cases the letters are common in place names and Thai names and nicknames. It is common to learn Low consonants in sets (we choose to do 3 sets of 8 consonants, in alphabetical order), and to start the Low consonants after the first set of 7 common Mid consonants.
There are Twenty-four Low consonants in Thai. Some are less common than others but all are used in some words. In a few cases the letters are common in place names and Thai names and nicknames. It is common to learn Low consonants in sets (we choose to do 3 sets of 8 consonants, in alphabetical order), and to start the Low consonants after the first set of 7 common Mid consonants.
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Writing Lessons – 7 Thai Mid-consonants
The Thai Alphabet Flash Cards can be used to help learn how to write the Thai Alphabet. In the videos below we have an expert teacher provide instruction in correcting simple errors that a beginner Thai language speaker encounters in first starting to write.
These videos are available in High Definition, and it is best to size the video to the full screen of your computer or mobile device. Contact us at info@lannainnovation.com if you have any questions, comments or suggestions.
7 Thai Mid-Consonants part 1 of 3
7 Thai Mid-Consonants part 2 of 3
7 Thai Mid-Consonants part 3 of 3