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| File extension | .M4A |
| Category | Audio File |
| Description | M4A audio file type was developed as a layer of MPEG-4 multimedia format that is used for storing compressed sound data. It is processed either by AAC or ALAC codec. M4a features 1024/960 block length size for more compact audio data representation compared to MP3. M4A is widely used on iTunes service. The files are zipped by lossy AAC algorithm. The protected version of M4A file has .m4p extension. Compared to MP3, M4A provides better sounding within the same size. |
| Associated programs | Apple QuickTime Player Apple iTunes Microsoft Windows Media Player |
| Developed by | Apple |
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| File extension | .WAV |
| Category | Audio File |
| Description | WAV file extension is related to a digital audio format that is used for storing sound tracks with lossless quality. It allows saving audio data with different bitrates and frequencies. The standard configuration is 44,1 kHz, 16 bps, stereo. WAV files have much in common with AIFF files, but they are based on RIFF technology instead of AIFF. WAV files are mostly used on Windows platform, being supported by Windows Media Players and other programs. Most often codec is MS ADPCM. |
| Associated programs | CyberLink PowerDirector Microsoft Windows Media Player Roxio Creator 2009 |
| Developed by | Microsoft & IBM |
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