Convert .ADTS to AA3

Convert .ADTS to .AA3

Audio Data Transport Stream File Format (.ADTS)

ADTS (Audio Data Transport Stream) is a container format for audio data encoded with the Advanced Audio Coding (AAC) encoding scheme, originally introduced with the MPEG-2 specification. The Advanced Audio Coding scheme is a lossy compression scheme, which was developed with the intention of replacing the MP3 encoding format as a standard. However, while AAC-encoded files were achieving better sound quality in smaller file sizes compared to MP3 files at similar bit rates, the MP3 format was supported by a wider range of applications and devices, leaving it in a dominant position.
While AAC can be encountered as a stand-alone extension, AAC-encoded data stored in ADTS files is used particularly for real-time audio streaming in online radio applications and the like. In contrast to other popular streaming formats, an ADTS file consists of series of frames, each containing header data followed by the compressed audio data. This file structure makes the ADTS an ideal audio streaming format, as it makes it easier on software applications to read the stream at any given point of its broadcast.
Since AAC encoding was also featured in the updated MPEG-4 specification, it's not unusual to also discover AAC-encoded audio data stored in MPEG-4 (MP4) container files.

Atrac3 Audio File (.AA3)

AA3 (ATRAC3 Audio) is a proprietary compressed audio file format developed by the Sony Corporation and used extensively in most of their audio and video editing applications such as Sony Vegas, Sony Sound Forge and Sony ACID. The AA3 format is also a common choice among game developers for storing game sounds and is also used for storing audio data on CDs and MiniDiscs.
Audio data stored in AA3 files is encoded with the Adaptive Transform Acoustic Coding (ATRAC) algorithm. The ATRAC algorithm was originally developed in 1992 by the engineers from Sony, working in close cooperation with engineers from the LSI Corporation, having the aim to create an algorithm that allows encoding at high speeds with the lowest possible amount of power consumption (one of the reasons why, for example, batteries on Sony Walkmans last longer when playing ATRAC files rather than MP3). This led to the succesfull implementation of the ATRAC1 algorithm. With the addition of numerous improvements to the codec, ATRAC3 saw its release in 1999, followed by ATRAC3plus in 2002. AA3 files are based on the ATRAC3 and ATRAC3plus algorithms.
ATRAC3 is a complex sub-band coding algorithm, where the raw signal is split into four sub-bands through three stacked quadrature mirror filters (QMF). Modified discrete cosine transform (MDCT) is then applied to each subband, leading to a further compression of the signal. On the other hand, ATRAC3plus relies on 16-channel QMF filtering, followed by Generalized Harmonic Analysis (GHA) and a 128-point MDCT. Naturally, ATRAC3plus provides better audio quality compared to ATRAC3 and is therefore used on a broader set of devices, such as the Sony PlayStation 3 and Sony Hi-MD Walkmans.
The major downside of the AA3 format is that it lacks decent cross-platform support.

Convert Audio Data Transport Stream File Format to Atrac3 Audio File

How to open .ADTS Audio Data Transport Stream File Format files?
Windows
  • Windows Media Player
  • VideoLAN VLC Media Player
Mac
  • VideoLAN VLC Media Player
Linux
  • VideoLAN VLC Media Player
iOS
Android
How to open .AA3 Atrac3 Audio File files?
Windows
  • Vegas
  • Sound Forge Audio Studio
  • ACID Music Studio
Mac
  • Sound Forge Audio Studio
Linux
iOS
Android

.ADTS to .AA3 converter

Disclamer: .ADTS to .AA3 converter is provided to give you some guidence about how to convert files from .ADTS to .AA3. You might need to purchase certain software to do the actual conversion.

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