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Comparison of Compression Algorithms

Both audio files are from freesounds.org and were compressed and inverted using Audacity. I am not sure why three of the M4A files for sound 2 are the same size, but they were all double checked and were compressed to the correct bit rate.

File Name	Compression Algorithm	Bit-rate (kbps)	Original Size (KB)	Compression Size (KB)	Compression Ratio	Link to Original Audio	Link to Compressed Audio	Link to Residual Audio
Piano	MP3	96	27200	869	.03	Original Audio	Compressed Audio	Residual Audio
Piano	MP3	128	27200	1200	.04	Original Audio	Compressed Audio	Residual Audio
Piano	MP3	192	27200	1700	.06	Original Audio	Compressed Audio	Residual Audio
Piano	MP3	320	27200	2700	.10	Original Audio	Compressed Audio	Residual Audio
Piano	OGG	low quality	27200	476	.02	Original Audio	Compressed Audio	Residual Audio
Piano	OGG	low-mid quality	27200	760	.03	Original Audio	Compressed Audio	Residual Audio
Piano	OGG	mid-high quality	27200	1300	.05	Original Audio	Compressed Audio	Residual Audio
Piano	OGG	high quality	27200	2700	.10	Original Audio	Compressed Audio	Residual Audio
Piano	AC3	96	27200	925	.03	Original Audio	Compressed Audio	Residual Audio
Piano	AC3	128	27200	1200	.04	Original Audio	Compressed Audio	Residual Audio
Piano	AC3	192	27200	1800	.07	Original Audio	Compressed Audio	Residual Audio
Piano	AC3	320	27200	3100	.11	Original Audio	Compressed Audio	Residual Audio
Piano	M4A	98	27200	939	.03	Original Audio	Compressed Audio	Residual Audio
Piano	M4A	128	27200	2500	.09	Original Audio	Compressed Audio	Residual Audio
Piano	M4A	192	27200	2500	.09	Original Audio	Compressed Audio	Residual Audio
Piano	M4A	320	27200	2700	.10	Original Audio	Compressed Audio	Residual Audio
Ambient	MP3	96	10100	629	.06	Original Audio	Compressed Audio	Residual Audio
Ambient	MP3	128	10100	839	.08	Original Audio	Compressed Audio	Residual Audio
Ambient	MP3	192	10100	1300	.13	Original Audio	Compressed Audio	Residual Audio
Ambient	MP3	320	10100	2100	.21	Original Audio	Compressed Audio	Residual Audio
Ambient	OGG	low quality	10100	329	.03	Original Audio	Compressed Audio	Residual Audio
Ambient	OGG	low-mid quality	10100	510	.05	Original Audio	Compressed Audio	Residual Audio
Ambient	OGG	mid-high quality	10100	850	.08	Original Audio	Compressed Audio	Residual Audio
Ambient	OGG	high quality	10100	2000	.20	Original Audio	Compressed Audio	Residual Audio
Ambient	AC3	96	10100	685	.07	Original Audio	Compressed Audio	Residual Audio
Ambient	AC3	128	10100	913	.09	Original Audio	Compressed Audio	Residual Audio
Ambient	AC3	192	10100	1400	.14	Original Audio	Compressed Audio	Residual Audio
Ambient	AC3	320	10100	2300	.23	Original Audio	Compressed Audio	Residual Audio
Ambient	M4A	98	10100	2300	.23	Original Audio	Compressed Audio	Residual Audio
Ambient	M4A	128	10100	2300	.23	Original Audio	Compressed Audio	Residual Audio
Ambient	M4A	192	10100	2300	.23	Original Audio	Compressed Audio	Residual
Ambient	M4A	320	10100	2500	.25	Original Audio	Compressed Audio	Residual Audio