---
title: Noise-cancelling headphones listen to the noise and play the opposit… — Bangs and loud sounds: firecrackers and ears · tree and pragmatics
description: Noise-cancelling headphones listen to the noise and play the opposite wave, so the push and the pull cancel out; they work best on steady droning noise (a low, steady hum, like a train or a plane engine). Who acts: cancelling headphones, push, headphones. A sentence of the lesson «Bangs and loud sou
---

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# Bangs and loud sounds: firecrackers and ears, sentence 15

<!-- .ven lang=en -->
Noise-cancelling headphones listen to the noise and play the opposite wave, so the push and the pull cancel out; they work best on steady droning noise (a low, steady hum, like a train or a plane engine).

<!-- .vintro -->
**Who acts:** cancelling headphones, push, headphones · **What happens:** cancel, listen, play, cancel out, work, drone · **To what, where:** opposite wave

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This is a sentence of the lesson «Bangs and loud sounds: firecrackers and ears» of the physics course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (cancelling headphones, push, headphones), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:019-bangs-and-loud-sounds-firecrackers-and-ears.lesson:15
# text = Noise-cancelling headphones listen to the noise and play the opposite wave, so the push and the pull cancel out; they work best on steady droning noise (a low, steady hum, like a train or a plane engine).
# source = school lesson (ours)
# course = physics
# lesson = 019-bangs-and-loud-sounds-firecrackers-and-ears.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1, R7-rel-agree ×2
1	Noise	noise	NOUN	NN	Number=Sing	3	compound	_	_
2	-	-	PUNCT	HYPH	_	1	punct	_	_
3	cancelling	cancel	VERB	VBG	VerbForm=Ger	4	amod	_	Agree=R7-rel-agree|Haiku=4:compound|HaikuPos=NOUN:NN:Number=Sing
4	headphones	headphone	NOUN	NNS	Number=Plur	5	nsubj	_	_
5	listen	listen	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	to	to	ADP	IN	_	8	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	noise	noise	NOUN	NN	Number=Sing	5	obl	_	_
9	and	and	CCONJ	CC	_	10	cc	_	_
10	play	play	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	conj	_	_
11	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
12	opposite	opposite	ADJ	JJ	Degree=Pos	13	amod	_	_
13	wave	wave	NOUN	NN	Number=Sing	10	obj	_	_
14	,	,	PUNCT	,	_	21	punct	_	_
15	so	so	ADV	RB	_	21	advmod	_	_
16	the	the	DET	DT	Definite=Def|PronType=Art	17	det	_	_
17	push	push	NOUN	NN	Number=Sing	21	nsubj	_	_
18	and	and	CCONJ	CC	_	20	cc	_	_
19	the	the	DET	DT	Definite=Def|PronType=Art	20	det	_	_
20	pull	pull	NOUN	NN	Number=Sing	17	conj	_	_
21	cancel	cancel	VERB	VB	VerbForm=Inf	5	parataxis	_	_
22	out	out	ADP	RP	_	21	compound:prt	_	_
23	;	;	PUNCT	:	_	25	punct	_	_
24	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	25	nsubj	_	_
25	work	work	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	parataxis	_	_
26	best	well	ADV	RBS	Degree=Sup	25	advmod	_	_
27	on	on	ADP	IN	_	30	case	_	_
28	steady	steady	ADJ	JJ	Degree=Pos	30	amod	_	_
29	droning	drone	VERB	VBG	VerbForm=Ger	30	compound	_	Agree=R7-rel-agree|Haiku=30:amod
30	noise	noise	NOUN	NN	Number=Sing	25	obl	_	_
31	(	(	PUNCT	-LRB-	_	36	punct	_	_
32	a	a	DET	DT	Definite=Ind|PronType=Art	36	det	_	_
33	low	low	ADJ	JJ	Degree=Pos	36	amod	_	_
34	,	,	PUNCT	,	_	33	punct	_	_
35	steady	steady	ADJ	JJ	Degree=Pos	36	amod	_	_
36	hum	hum	NOUN	NN	Number=Sing	30	appos	_	_
37	,	,	PUNCT	,	_	40	punct	_	_
38	like	like	ADP	IN	_	40	case	_	_
39	a	a	DET	DT	Definite=Ind|PronType=Art	40	det	_	_
40	train	train	NOUN	NN	Number=Sing	36	nmod	_	_
41	or	or	CCONJ	CC	_	44	cc	_	_
42	a	a	DET	DT	Definite=Ind|PronType=Art	44	det	_	_
43	plane	plane	NOUN	NN	Number=Sing	44	compound	_	_
44	engine	engine	NOUN	NN	Number=Sing	40	conj	_	Agree=R5-strong|Haiku=36:conj
45	)	)	PUNCT	-RRB-	_	36	punct	_	_
46	.	.	PUNCT	.	_	5	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **cancel** | gerund |  |  |  |  |  |  | tree rules |
| 2 | **listen** | present | cancelling headphones |  |  |  |  | to the noise | vn peer-30.3 «NP V PP.theme»: agent=Agent to noise=Theme |
| 3 | **play** | present | cancelling headphones *not said here* | the opposite wave |  |  |  |  | vn use-105.1 «NP V NP»: agent=Agent wave=Theme |
| 4 | **cancel out** | infinitive | the push and the pull |  |  |  |  |  | tree rules |
| 5 | **work** | present | headphones *= headphone* |  |  |  |  | on steady droning noise; well *property* | vn employment-95.3 «NP V PP.theme»: agent=Agent on noise=Theme |
| 6 | **drone** | gerund |  |  |  |  |  |  | vn animal\_sounds-38 «NP V»: agent=Agent |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:physics:019-bangs-and-loud-sounds-firecrackers-and-ears.lesson:15`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×1, R7-rel-agree ×2. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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