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FreeFileConvert uses tuned encoding for AAC to AMR conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload AAC files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized AMR results on any device you rely on.
Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent AMR audio with dependable progress tracking.
The AAC supports stereo playback at a maximum and acceptably modest 96 kilobits per second. Sample frequencies can range from 8 to 96 kilo hertz, and maximum number of supported channels is 48. Resulting AAC file sizes are typically smaller in comparison with those of its closest rival format mp3.
AMR format encodes narrow band signals between 200 and 3400 hertz at a maximum bitrate of 12.2 kilobits per second. The format employs the ACELP ' Algebraic code-excited linear prediction algorithm, a proprietary speech encoding method created by the VoiceAge Corporation.
Upload your audio file in the AAC format from your device, Dropbox, or Google Drive.
Select AMR as the output format and click Convert. Adjust optional settings if needed.
Download the converted audio file. Each file stays available for up to 5 downloads.