![]() This is known as auditory masking, this allows the discarding of data with minimal loss of quality. The human hearing system cannot hear quiet sounds in the presence of loud sounds of a similar frequency for example, a voice conversation cannot be heard while an aeroplane flies low overhead. The current variant is specified in ISO/IEC standard 14496-3. It is also part of the MPEG-4 standard, it is most widely used to create small digital audio files. It too compresses digital audio files but to a bigger degree. Apple are the biggest users of this format and if you have an iPod or iPhone then you will have come across this format as it is iTunes default audio format.ĪAC is similar in concept to MP3 but goes further. It is at least one tenth the size of CD digital data. Then select the file in the File List, drag it to the Drop Zone and drop it there. Run AAC to AC3 Convertor and use the Folder Explorer to browse to the files you want to convert. The first step is to select the files to convert aac to ac3. Select the AAC files to convert to AC3 format. AAC is about half the size of MP3 but with better quality. Then follow the three steps to convert AAC to AC3. It essentially cuts out, or compresses, information that the human ear cannot pick up thereby making digital files smaller and more easily managed and therefore quicker to download. An added benefit of M4A files are that they do not carry any Digital Rights Management protection.ĪAC is similar to MP3. It was developed by Apple and it only contains audio data, rather than MP4 which contains both audio and video. ![]() This effectively means that they can be decoded back to their original quality they were at the point of compression. M4A is a file encoded with advanced audio coding (AAC) and is implemented with AAC compression standards or ALAC (Apple Lossless Audio Codec) specifications. It's the default audio format for Apple products, Nintendo products, Android, Blackberry, PlayStation, and many in-dash music systems in cars. M4A files sound better than MP3 files when encoded at the same bit rate due to some of the enhancements. It was generally intended as the successor to MP3 and the file quality is better and file sizes smaller compared to MP3 files. M4A audio files were developed to enable easy sharing of digital music, audiobook content, podcasts. ![]()
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