Convert audio files online


(It must be a valid sample rate value that target format supports.)
Conversion Results:
# Output File Source File Action

NEW! Download Audio Converter for Android to convert audio files on your phone offline.

Steps:

1. Click "Choose File" button to select a file on your computer. You can also click the dropdown button to choose online file from URL, Google Drive or Dropbox. The source file can also be video format. Video and audio file size can be up to 200M.

2. Choose target audio format. The target audio format can be WAV, WMA, MP3, OGG, AAC, AU, FLAC, M4A, MKA, AIFF, OPUS or RA.

3. Click "Convert Now!" button to start conversion. It will automatically retry another server if one failed, please be patient while converting. The output files will be listed in the "Conversion Results" section. Click icon to show file QR code or save file to online storage services such as Google Drive or Dropbox.

Compare AMR with OGG:
Name AMR OGG
Full name Adaptive Multi-Rate Ogg Vorbis
File extension .amr, .3ga .ogg .oga
MIME audio/amr application/ogg, audio/ogg, audio/vorbis, audio/vorbis-config
Developed by 3GPP Xiph.Org Foundation
Type of format Audio compression format Audio compression format
Introduction The Adaptive Multi-Rate (AMR or AMR-NB or GSM-AMR) audio codec is an audio compression format optimized for speech coding. AMR was adopted as the standard speech codec by 3GPP in October 1999 and is now widely used in GSM and UMTS. Vorbis is a free and open-source software project headed by the Xiph.Org Foundation. The project produces an audio coding format and software reference encoder/decoder (codec) for lossy audio compression. Vorbis is most commonly used in conjunction with the Ogg container format and it is therefore often referred to as Ogg Vorbis.
Technical details AMR speech codec consists of a multi-rate narrowband speech codec that encodes narrowband (200-3400 Hz) signals at variable bit rates ranging from 4.75 to 12.2 kbit/s with toll quality speech starting at 7.4 kbit/s. Sampling frequency 8 kHz/13-bit (160 samples for 20 ms frames), filtered to 200-3400 Hz. Vorbis had been shown to perform significantly better than many other lossy audio formats in the past in that it produced smaller files at equivalent or higher quality while retaining computational complexity comparable to other MDCT formats such as AAC or Windows Media Audio.
Associated programs Audacity, FFmpeg, MPlayer, QuickTime, VLC media player VLC media player, MPlayer, Winamp, foobar2000.
Sample file sample.amr sample.ogg
Wiki AMR on Wikipedia OGG on Wikipedia