鼻濁音: The Nasal が That Makes Your Japanese Sound Like an NHK Announcer

Hi everyone! Sakura here 🌸 — your Japanese study partner.

Ever listened to an NHK news anchor or a Japanese voice actor and thought, "their が sounds different from mine — softer somehow"?

That softness has a name: 鼻濁音びだくおん (bidakuon) — the nasal が. Master this one sound and your Japanese suddenly goes from learner to broadcast quality.

👃 What is 鼻濁音びだくおん?

Literally, "nasal voiced sound." Regular が/ぎ/ぐ/げ/ご use the throat — the airstream goes through the mouth. Under specific conditions, those sounds shift to [ŋ] — voicing through the nose instead.

Closest English reference: the 'ng' in singer (not finger). Soft, nasal, no hard consonant attack.

📏 When do you actually use it?

Not just anywhere. NHK announcers follow three clear rules.

1️⃣ When が-row appears mid-word or word-final

2️⃣ The particle が — always nasal

The grammatical particle が marks subjects. NHK-standard pronunciation makes it nasal almost without exception, gluing it softly to the preceding word.

3️⃣ After ん

When が-row follows the moraic ん, the nasalization happens naturally — your airstream is already through the nose.

⚠️ When NOT to use bidakuon

Advanced learners need the exceptions too. In these contexts, stick with hard, regular が.

1. Word-initial が: 学校がっこう (school), 銀行ぎんこう (bank) — start hard.
2. Loanwords (katakana): ハンバーグ (hamburger), プログラム (program) — keep them hard.
3. The number 5 (五ご) when counting: 五ご, 五百ごひゃく — hard. (Idioms like 十五夜じゅうごや are an exception that nasalizes.)
4. Onomatopoeia/mimetics: ガラガラ (rattling) — hard.

🗣️ Sakura's drill: how to actually produce it

The physical move: drop the back of your tongue lightly, open the velum, and let air flow through your nose as you voice the が.

It's the same body-mechanic as the English 'ng' in singing — but starting from a vowel position.

A real note: younger Japanese speakers are increasingly skipping bidakuon in casual speech. But in broadcasting, voice acting, formal speech, and traditional dialects, it's still treated as the marker of beautiful, standard Japanese.

If you want your Japanese to carry that polish, train your ear for it — and start using it.

✨ The recap

1. Bidakuon = が-row pronounced as nasal [ŋ].
2. Use it mid/end of word, particle が, and after ん.
3. Don't use it word-initial, in katakana loanwords, or counting numbers.

A single sound, but it changes how your Japanese is perceived. Worth the practice. 👋