AMR (코덱)

적응 다중 속도(AMR)
파일 확장자.amr
인터넷 미디어 타입
audio/amr, audio/3gpp, audio/3gpp2
발표일1999년 6월 23일(25년 전)(1999-06-23)[1][2]
최신 버전
9.0.0
(2009년)
포맷 종류오디오 압축 포맷, 오디오 파일 포맷

적응 다중 속도(영어: Adaptive Multi-Rate) 또는 AMR(AMR, AMR-NB)음성 부호화에 최적화된 특허가 있는 오디오 데이터 압축이다. AMR 음성 코덱은 7.4 kbps에서 시작하는 시외전화 품질 음성으로 4.75에서 12.2 kbps의 가변 비트레이트의 협대역 신호(200-3400 Hz)를 인코딩 하는, 다중 속도 협대역 음성 코덱으로 이루어진 음성 코덱이다.[3]

특징

  • AMR 코덱은 12.2, 10.2, 7.95, 7.40, 6.70, 5.90, 5.15 and 4.75 kbit/s 비트레이트의 여덟 가지 소스 코덱을 사용한다.

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