juninho12 / freearc

Automatically exported from code.google.com/p/freearc
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poor ratio and slow compression with aiff files #318

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago
What steps will reproduce the problem?

1. select a folder with *.aiff audio files
2. start compressing it with FreeArc

What is the expected output? What do you see instead?

Expected output (as with wav files):
analyze time: 0.5 sec
compressing ratio: 64%
total time: 33 sec
resulting arc size: 246MB
(7-zip is able to provide a 66% compression ratio for the aiff files in 67 sec)

Actual output (with the aiff files):
analyze time: 33 sec
compressing ratio: 99%
total time: 54 sec
resulting arc size: 377MB

What version of the product are you using? On what operating system?

I'm using the latest alpha (of 26 august, 2012). Also tried with the latest 
stable version, with similar results. Tried the "Maximum", "Ultra" and "Normal" 
presets, with similar results.
Toshiba laptop. Win 7 Ultimate, 64-bit. i7. 4GB of memory.

Please provide any additional information below.

I tested this on 2 sets of uncompressed impulse response (IR) files for 
convolution reverb. Basically these are small audio files, each of them storing 
information about a single click recorded in some room. The first set has 433 
32-bit 48kHz wav files (a total of 377MB), the second has 433 32-bit 48kHz aiff 
files (a total of 377MB). Both sets have pretty much the same audio 
information, what's different is the format, intended for use with a different 
program/plugin.

Original issue reported on code.google.com by 2wtanger...@gmail.com on 5 Sep 2012 at 12:12