lossyWAV 1.3.0 Delphi to C++ Translation Thread, Added noise linear PCM bitdepth reduction method. Options

[Nick.C]

Got sidetracked again - I'm going to add an option to convert any valid input audio (9-bit to 32-bit signed integer) to Float16, with or without adaptive / fixed noise-shaping. This will require the same messing about with the WAV handling code that I had to do for TransPCM. ETA is sometime early in the new year.

[Atak_Snajpera]

any progress on lossywav?

[Nick.C]

Still working on it, still distracted by the Elite: Dangerous KickStarter....

[FreaqyFrequency]

I've been experimenting with various compression levels in FLAC and -q X, and I've found that for certain tracks, -0 compresses much more efficiently than higher levels, and is practically equivalent with at least one of the tracks I tested at -8. Extraportable combined with -0 might very well make for the most overall efficient decode combination ever. Exciting stuff.

[Nick.C]

lossyWAV beta 1.3.0g attached to post #1 in this thread.

[FreaqyFrequency]

lossyWAV beta 1.3.0g attached to post #1 in this thread.

Neat! I'm getting an average of 2 to 3 kbps reduction at level 0 compression for the material I've tested so far. It also seems to average faster processing than 1.3.0a, which is what I was using previously.

[Nick.C]

I'm getting an average of 2 to 3 kbps reduction at level 0 compression for the material I've tested so far.

I've carried out a FLAC settings comparison test (based on my 55 problem sample test set) and will post the results this evening.

[Nick.C]

I did a bit of testing with my 55 problem sample set (12:43.933 of audio) processed using "-q X" and got the following results:

CODE

+------------------+---------------------+
| FLAC | Relative |
| Encoder +----------+----------+
| Setting | Size | Time |
+------------------+----------+----------+
| -8 -m -r 8 -p | 97.66% | 2187% |
| -8 -r 8 -p | 97.66% | 2089% |
| -8 -e -r 8 -p | 97.66% | 2094% |
| -8 -e -m -r 8 -p | 97.66% | 2105% |
| -8 -e -p | 97.66% | 1599% |
| -8 -p | 97.66% | 1615% |
| -8 -m -p | 97.66% | 1616% |
| -8 -e -m -p | 97.66% | 1634% |
| -6 -e -m -r 8 -p | 98.06% | 1689% |
| -7 -e -r 8 -p | 98.06% | 1694% |
| -6 -e -r 8 -p | 98.06% | 1695% |
| -7 -e -m -r 8 -p | 98.06% | 1697% |
| -4 -e -m -r 8 -p | 98.06% | 1701% |
| -7 -r 8 -p | 98.06% | 1705% |
| -7 -m -r 8 -p | 98.06% | 1710% |
| -5 -e -m -r 8 -p | 98.06% | 1723% |
| -5 -e -r 8 -p | 98.06% | 1799% |
| -7 -e -p | 98.06% | 1215% |
| -6 -e -p | 98.06% | 1220% |
| -6 -e -m -p | 98.06% | 1222% |
| -7 -m -p | 98.06% | 1222% |
| -7 -e -m -p | 98.06% | 1224% |
| -7 -p | 98.06% | 1225% |
| -5 -e -p | 98.10% | 983% |
| -5 -e -m -p | 98.10% | 1020% |
| -4 -e -m -p | 98.18% | 825% |
| -8 -r 8 | 98.36% | 368% |
| -8 -m -r 8 | 98.36% | 370% |
| -8 -e -m -r 8 | 98.36% | 374% |
| -8 -e -r 8 | 98.36% | 379% |
| -8 -e -m | 98.36% | 249% |
| -8 -m | 98.36% | 249% |
| -8 | 98.36% | 250% |
| -8 -e | 98.36% | 250% |
| -3 -e -m -r 8 -p | 98.69% | 1449% |
| -6 -e -m -r 8 | 98.80% | 294% |
| -7 -e -r 8 | 98.80% | 295% |
| -7 -r 8 | 98.80% | 295% |
| -5 -e -r 8 | 98.80% | 296% |
| -7 -e -m -r 8 | 98.80% | 296% |
| -6 -e -r 8 | 98.80% | 296% |
| -4 -e -m -r 8 | 98.80% | 298% |
| -7 -m -r 8 | 98.80% | 298% |
| -5 -e -m -r 8 | 98.80% | 318% |
| -6 -e -m | 98.81% | 174% |
| -7 -e -m | 98.81% | 175% |
| -6 -e | 98.81% | 176% |
| -7 -m | 98.81% | 177% |
| -7 -e | 98.81% | 183% |
| -7 | 98.81% | 189% |
| -3 -e -m -p | 98.82% | 605% |
| -5 -e | 98.86% | 127% |
| -5 -e -m | 98.86% | 138% |
| -4 -e -m | 98.95% | 105% |
| -3 -e -m -r 8 | 99.40% | 261% |
| -6 -m -r 8 -p | 99.42% | 201% |
| -6 -r 8 -p | 99.42% | 205% |
| -5 -r 8 -p | 99.42% | 206% |
| -5 -m -r 8 -p | 99.42% | 209% |
| -4 -m -r 8 -p | 99.42% | 215% |
| -6 -m -p | 99.42% | 137% |
| -6 -p | 99.42% | 138% |
| -5 -m -p | 99.45% | 106% |
| -5 -p | 99.45% | 108% |
| -4 -m -p | 99.51% | 87% |
| -3 -e -m | 99.55% | 71% |
| -3 -m -r 8 -p | 99.86% | 209% |
| -3 -m -p | 99.95% | 88% |
| -6 -m -r 8 | 99.97% | 28% |
| -6 -r 8 | 99.97% | 31% |
| -5 -m -r 8 | 99.97% | 32% |
| -4 -m -r 8 | 99.97% | 33% |
| -5 -r 8 | 99.97% | 33% |
| -6 -m | 99.97% | 6% |
| -6 | 99.97% | 7% |
| -5 -m | 100.00% | -1% |
+------------------+----------+----------+
| -5 | 100.00% | 0% |
+------------------+----------+----------+
| -4 -m | 100.06% | -5% |
| -3 -m -r 8 | 100.44% | 27% |
| -3 -m | 100.52% | -9% |
| -3 -e -r 8 -p | 100.54% | 678% |
| -3 -e -p | 100.69% | 279% |
| -3 -e -r 8 | 101.28% | 102% |
| -3 -e | 101.45% | 9% |
| -3 -r 8 -p | 101.76% | 78% |
| -3 -p | 101.87% | 20% |
| -3 -r 8 | 102.37% | -15% |
| -3 | 102.48% | -30% |
| -4 -e -r 8 -p | 102.59% | 846% |
| -4 -e -p | 102.74% | 403% |
| -4 -e -r 8 | 103.33% | 130% |
| -4 -e | 103.50% | 28% |
| -4 -r 8 -p | 104.08% | 85% |
| -4 -p | 104.19% | 22% |
| -4 -r 8 | 104.64% | -8% |
| -4 | 104.76% | -28% |
| -2 -e -m -r 8 -p | 108.34% | 113% |
| 0 -e -m -r 8 -p | 108.34% | 114% |
| 0 -e -m -r 8 | 108.34% | 114% |
| -2 -e -m -r 8 | 108.34% | 115% |
| -1 -e -m -r 8 | 108.34% | 115% |
| -1 -e -m -r 8 -p | 108.34% | 117% |
| -2 -e -r 8 -p | 108.34% | 118% |
| -2 -e -r 8 | 108.34% | 119% |
| -2 -r 8 | 108.50% | -4% |
| 0 -m -r 8 -p | 108.50% | -3% |
| 0 -m -r 8 | 108.50% | -3% |
| -1 -m -r 8 -p | 108.50% | -2% |
| -2 -r 8 -p | 108.50% | -1% |
| -2 -m -r 8 | 108.50% | -1% |
| -1 -m -r 8 | 108.50% | 0% |
| -2 -m -r 8 -p | 108.50% | 5% |
| -2 -e -m -p | 108.65% | -2% |
| -2 -e -m | 108.65% | -1% |
| -1 -e -m -p | 108.65% | -1% |
| 0 -e -m -p | 108.65% | -1% |
| 0 -e -m | 108.65% | -1% |
| -1 -e -m | 108.65% | 2% |
| -2 -e -p | 108.65% | 5% |
| -2 -e | 108.65% | 7% |
| 0 -m | 108.71% | -28% |
| 0 -m -p | 108.71% | -28% |
| -1 -m | 108.71% | -27% |
| -2 -m -p | 108.71% | -27% |
| -2 | 108.71% | -27% |
| -2 -m | 108.71% | -25% |
| -2 -p | 108.71% | -23% |
| -1 -m -p | 108.71% | -21% |
| 0 -e -r 8 -p | 110.94% | 30% |
| 0 -e -r 8 | 110.94% | 35% |
| 0 -r 8 -p | 111.12% | -31% |
| 0 -r 8 | 111.12% | -28% |
| 0 -e | 111.29% | -29% |
| 0 -e -p | 111.29% | -25% |
| 0 -p | 111.37% | -41% |
| 0 | 111.37% | -34% |
| -1 -e -r 8 -p | 113.83% | 34% |
| -1 -e -r 8 | 113.83% | 44% |
| -1 -r 8 -p | 114.06% | -27% |
| -1 -r 8 | 114.06% | -24% |
| -1 -e -p | 114.18% | -20% |
| -1 -e | 114.18% | -19% |
| -1 -p | 114.31% | -39% |
| -1 | 114.31% | -38% |
+------------------+----------+----------+

This post has been edited by Nick.C: Jan 23 2013, 22:20

[Nick.C]

lossyWAV beta 1.3.0h attached to post #1 in this thread.

[Nick.C]

lossyWAV beta 1.3.0i attached to post #1 in this thread.

[Nick.C]

lossyWAV beta 1.3.0j attached to post #1 in this thread.

[Cynic]

What is the penalty (if any) for using the -i switch? Slower encoding, higher risk of artifacts, or both? For someone not that concerned with filsesize, is the new noise shaping routine preferable to the default?

[Nick.C]

Hi Cynic,

The penalty is simply that the noise shaping is a bit more aggressive in trying to conform to the lossless audio spectrum. This saves about 1% of the resultant lossyFLAC size when compressed at --extraportable, less at higher quality levels.

I am currently working on a (very) simplistic psymodel based on masking using the Bark scale. This may be a wrong turn, but it is an option for both the classic method and the --interp-curve method of determining the basis shape of the noise spectrum.

Nick.

[Banned]

Out of curiousity, why does the distribution include a "gpl.txt" file? I thought it is for open source software.

[Nick.C]

When v1.40 is released, the source will be as well in a similar manner to the previous versions.

[Nick.C]

lossyWAV beta 1.3.0k attached to post #1 in this thread.

[edit] updated to beta 1.3.0k2 [/edit]
[edit2] updated to beta 1.3.0k3 [/edit2]

This post has been edited by Nick.C: Mar 8 2013, 22:26

[Nick.C]

lossyWAV beta 1.3.0m attached to post #1 in this thread.

[Nick.C]

lossyWAV beta 1.3.0n attached to post #1 in this thread.

[skamp]

Thanks for your work. I'm looking forward to 1.3.0 final.