File extension aac information

AAC is a standard compression scheme for digital audio. It has 48-full bandwidth channels that go up to 96kHz in one stream. Good quality audio is achievable at 320-kilo bits per second data rates for 5 channels. When using on hi-fi, MP3 quality is maintained by having data rates of 192-kilo bits per second. This extension file is also used as the standard audio format for Sony products some of which include the Playstation portable, Sony’s Playstation 3, Nintendo’s Wii among many other consoles.
AAC is much more improved and has performance fixes that still exist in MP3 formats. Some of the improvements are an increase in sample frequencies from 16 kHz to 8 kHz on the lower end to 96 kHz from 48 kHz on the higher end. This means digital audio can be sampled at a much wider frequency difference. For stationery signals, this file extension has much higher coding efficiency thereby making it more efficient than MP3 files. It uses 128 samples of block size allowing it to be sharper than MP3 due to higher coding accuracy.