[ko] Translation done of `AudioParam.defaultValue` document (#2999)

* translate the below document.

AudioParam.defaultValue

* modify a word

specifications

Co-authored-by: hochan Lee <hochan049@gmail.com>

Co-authored-by: hochan Lee <hochan049@gmail.com>

1 files changed, 47 insertions, 0 deletions

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+---
+title: AudioParam.defaultValue
+slug: Web/API/AudioParam/defaultValue
+tags:
+  - API
+  - AudioParam
+  - Property
+  - Reference
+  - Web Audio API
+  - defaultValue
+browser-compat: api.AudioParam.defaultValue
+---
+{{APIRef("Web Audio API")}}
+
+{{ domxref("AudioParam") }} 인터페이스의 읽기 전용 **`defaultValue`** 속성은 `AudioParam` 을 생성하는 특정한 {{domxref("AudioNode")}}에 의해 정의되는 특성들의 초기 값을 나타냅니다.
+
+## 구문
+
+```js
+var defaultVal = audioParam.defaultValue;
+```
+
+### 값
+
+부동점 {{jsxref("Number")}}.
+
+## 예제
+
+```js
+const audioCtx = new AudioContext();
+const gainNode = audioCtx.createGain();
+const defaultVal = gainNode.gain.defaultValue;
+console.log(defaultVal); // 1
+console.log(defaultVal === gainNode.gain.value); // true
+```
+
+## 명세서
+
+{{Specifications}}
+
+## 브라우저 호환성
+
+{{Compat}}
+
+## 같이 보기
+
+- [Web Audio API 사용하기](/ko/docs/Web/API/Web_Audio_API/Using_Web_Audio_API)