Unlike English, which uses stress accent (where stressed syllables are louder, longer, and higher in pitch), Japanese uses pitch accent (高低アクセント - kootei akusento).
This means that instead of making a syllable louder, you change the pitch of your voice between High (H) and Low (L). Getting the pitch right is crucial because changing the pitch pattern can completely change the meaning of a word.
Here is a breakdown of how Japanese pitch accent works.
1. The Core Rules of Japanese Pitch
Japanese words are measured in mora (essentially beats/syllables, including short vowels, long vowels, and "n" sounds). There are two golden rules for standard Japanese (Tokyo dialect):
Rule 1: The 1st and 2nd morae must always have different pitches. If the 1st is Low, the 2nd must be High (L-H). If the 1st is High, the 2nd must be Low (H-L).
Rule 2: Once the pitch drops from High to Low within a word, it cannot go back up.
2. Examples of Pitch Changing Meaning
The classic way to understand this is through minimal pairs—words that sound identical in consonants and vowels but differ in pitch.
Ame (Rain vs. Candy)
Hashi (Bridge, Chopsticks, vs. Edge)
This is a famous three-way distinction. Pay attention to how the particle (like ga) attaches to the end, as it reveals the true accent type.
Note: Notice how "Bridge" and "Edge" sound exactly the same on their own (Low-High). The difference is that "Bridge" drops after the word ends, so the particle is Low. For "Edge", the pitch stays flat, so the particle stays High.
3. The 4 Main Accent Types
Every Japanese word falls into one of four categories based on where the pitch drops (the "accent kernel"):
Atamadaka (Head-high / 第一型): The first mora is High, and all subsequent morae are Low.
Example: Gohan (cooked rice, meal) → H - L - L
Nakadaka (Middle-high / 中高型): The pitch starts Low, rises to High somewhere in the middle, and drops back to Low before the word ends.
Example: Tamago (Egg) → L - H - L
Odaka (Tail-high / 尾高型): The pitch starts Low and rises, reaching High on the very last mora. If you add a particle, the pitch drops.
Example: Sashimi (raw fish dish) ga → L - H - H - L (particle ga would be L)
Example: Hana (flower) ga → L - H - L (particle ga would be L)
Heiban (Flat / 平板型): The pitch starts Low, rises to High on the second mora, and stays High all the way through any attached particles. (About 50% of Japanese words are Heiban).
Example: Sakana (Fish) ga → L - H - H - H (particle ga would also be H)
Example: Hana (nose) ga → L - H - H (particle ga would also be H)
Summary for Learners
While regional dialects (like Osaka/Kyoto) have completely different pitch systems, learning the standard Tokyo pitch accent will make your Japanese sound incredibly natural and native-like.
If you are just starting out, don't stress too much—context usually prevents misunderstandings, but keeping an ear out for the "musicality" of the language will help immensely!
Additional information: Marugoto Word Book page 3
Marugoto Plus Introduction to Japanese / Pronunciation
