The pronunciation of consonants depend on whether they are used alone or in relation with their preceding letters. When pronounced under the influence of a preceding letter, consonants tend to be pronounced in fortis. In general, ‘か’ and ‘た’ in the middle or end of a word are pronounced in fortis unlike those at the beginning of a word. Even the same word can be pronounced differently according to the way it is read. When a word is read with a pause between its syllables, even the letters in the middle or end of the word are pronounced like the letters at the beginning. Positions at the beginning, middle, and end of a word determine whether the pronunciation of a letter is under the influence of its preceding letter. The pronunciation of voiceless ‘か’ and ‘た’ sounds are influenced by their positions, but those of voiced ‘か’ and ‘た’ sounds are not influenced by their positions and can be pronounced ‘ㄱ’ and ‘ㄷ’ like ‘g’ and ‘d’ and should not be pronounced ‘ㅋ’ or ‘ㄲ’ and ‘ㅌ’ or ‘ㄸ,’ respectively. Even when they are pronounced ‘ㄱ’ and ‘ㄷ,’ their pronunciation should be heavy and not strong. The pronunciation, ‘か’ and ‘が’ sounds correspond to ‘ㅋ’ and ‘ㄱ’ sound, and ‘た’ and ‘だ’ sounds correspond to ‘ㅌ’ and ‘ㄷ’ sounds. In the phonological aspect, however, their phonetic values do not correspond one-on-one. There are subtle differences in the sound band between ‘か’ and ‘た’ and ‘ㅋ’ and ‘ㅌ’ and between ‘が’ and ‘だ’ and ‘ㄱ’ and ‘ㄷ,’ which means that a good understanding of the differences is required for accurate pronunciation. Compared with ‘ㅋ’ and ‘ㅌ’ in Korean, ‘か’ and ‘た’ sounds have weaker ‘k’ and ‘t’ elements. That is, ‘ㅋ’ and ‘ㅌ’ should be pronounced a little weaker for ‘か’ and ‘た’ for their original pronunciation. ‘ㅋ’ and ‘ㅌ’ have a stronger pronunciation than the original sounds of ‘か’ and ‘た,’ and ‘ㄱ’ and ‘ㄷ’ have a weaker pronunciation than their original sounds. ‘か’ and ‘た’ sounds are between ‘ㅋ’ and ‘ㄱ’ and between ‘ㅌ’ and ‘ㄷ,’ respectively. In addition, ‘が’ and ‘だ’ sounds are also close to ‘ㄱ’ and ‘ㄷ’ in Korean, but the strong pronunciation of ‘ㄱ’ and ‘ㄷ’ cannot reflect the accurate pronunciation of ‘が’ and ‘だ’ sounds. One can pronounce ‘ㄱ’ and ‘ㄷ’ comfortably for ‘が’ and ‘だ’ sounds in the middle or end of a word, but ‘が’ and ‘だ’ sounds at the beginning cannot be reflected simply by ‘ㄱ’ and ‘ㄷ.’