To simplify the code, I am thinking of removing the compatibility with libfftw3f-3.dll (single-precision) and reverting to double precision for all calculations. Does anyone have any violent objections to this proposal?

There is a known problem within foobar2000 (although more likely to do with cmd.exe itself) when running an executable within the cmd.exe command line from a path which includes spaces. The suggested fix for this is to enclose the element of the path which contains spaces within double quotation marks ("), e.g. c:\"program files"\directory_where_executable_is\executable_name

@Big_Berny - if the executable is on the path then you don't need to specify any path to is, just the executable name.

@halb27 - although you may want to wait until beta 1.2.2s is posted - I have had an idea which I am trying to implement that may improve things.

For those who use lossyWAV preprocessing as an efficient alternative to pure lossless encoding, adaptive noise shaping isn't interesting a priori. Adaptive noise shaping is most interesting for those who want to use lossyWAV preprocessed lossless as an alternative to very high bitrate [lossy].

+-------+----------+----------+----------+----------+----------+----------+
|Version| Settings | FLAC -5  |--insane  |--extreme |--standard|--portable|
+-------+----------+----------+----------+----------+----------+----------+
|       | default  | 654kbit/s| 584kbit/s| 510kbit/s| 427kbit/s| 325kbit/s|
| beta  +----------+----------+----------+----------+----------+----------+
|       |--shaping | 658kbit/s| 589kbit/s| 515kbit/s| 431kbit/s| 325kbit/s|
|1.2.2s +----------+----------+----------+----------+----------+----------+
|       |--adaptive| 654kbit/s| 584kbit/s| 509kbit/s| 426kbit/s| 323kbit/s|
+-------+----------+----------+----------+----------+----------+----------+

[edit] Were you testing main quality scale or altpreset and did you use any noise-shaping? [/edit]

If I may ask: How does LossyWAV in non-noise-shaping mode determine when to chop off LSBs? Simply based on the amplitude or energy of the current frame, or something more complicated?