誰かが口笛を吹くのが聞こえた。

Sentence Analyzer

口笛 吹く 聞こえた

English Translation

I heard someone whistle.

Furigana

(だれ)かが口笛(くちぶえ)()くのが()こえた。

Romanji

Dare ka ga kuchibue o fuku no ga kikoeta.

Words

(だれ、たれ、た)
who
()
indicates a question (sometimes rhetorical); or; whether or not; some- (e.g. something, someone); indicates doubt, uncertainty, etc.; emphatic prefix; suffix forming adjectives or adverbs; in that way
()
indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
口笛 (くちぶえ)
whistle
()
indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.
吹く (ふく)
to blow (e.g. wind); to play a wind instrument; to emit; to spout; to whistle; to laugh; to burst into laughter; to smelt; to mint; to brag; to talk big
()
indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question
聞こえる (きこえる)
to be heard; to be audible; to be said to be; to be reputed

Kanji

Readings: スイ、 だれ、 たれ、 た
Meanings: who, someone, somebody
Readings: コウ、 ク、 くち
Meaning: mouth
Readings: テキ、 ふえ
Meanings: flute, clarinet, pipe, whistle, bagpipe, piccolo
Readings: スイ、 ふ.く
Meanings: blow, breathe, puff, emit, smoke
Readings: ブン、 モン、 き.く、 き.こえる
Meanings: hear, ask, listen