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Old 08-14-2012, 11:25 AM
BruderTux BruderTux is offline
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sample compression might be a step forward. Disk I/O produces CPU load as well (irqs, ... ) so the performance cpu penalty might not be as big as just looking at the decompression algorithm alone.
In the video arena media must be compressed these days. The data rate for uncompressed HD or 4k video is just to high.

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Old 08-14-2012, 06:21 PM
blackcom blackcom is offline
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Originally Posted by mconnelly View Post
There are compressed formats that can be stored in memory compressed and played back directly without decoding into another format in memory.

In general, there are different ways to compress audio, and different formats are optimized for different things, smallest size, lowest CPU demands, etc. Sound quality in the case of lossy compression, not an issue with lossless. For sampling it seems like low CPU is more important than absolute minimum size.
I tought people wanted flac mainly to preserve ssd diskspace? Storing flac in ram would probably complicate the play engine in very high degree. Ram is not that expensive, ssd is...
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Old 08-15-2012, 07:16 AM
mconnelly mconnelly is offline
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A compressed format done right should be able to save disk space and memory. Converting to another format is an extra step versus just playing back the compressed file. Adding any implementation of compression is going to complicate the playback engine, so if it ever happens, might as well do it in a way that can give the best performance.
Old 09-01-2012, 05:27 AM
Crown Crown is offline
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I agree. The Hollywood series require some serious compression formatting. It's annoying to find one bunch of libraries fill an entire hard disk.
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