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TSAC: ultra-low bitrate ultra effective audio compressor by Fabrice Bellard

2024-05-04 12:02:58 by birdie | Views: 8458 | Comments: 1

TSAC: Very Low Bitrate Audio Compression

TSAC is an audio compression utility reaching very low bitrates such as 5.5 kb/s for mono or 7.5 kb/s for stereo at 44.1 kHz with a good perceptual quality. Hence TSAC compresses a 3.5 minute stereo song to a file of 192 KiB.

An Nvidia GPU is necessary for fast operation. CPU only is also supported but slower.

Technical information
  • TSAC is based on a modified version of the Descript Audio Codec extended for stereo and a Transformer model to further increase the compression ratio. Both models are quantized to 8 bits per parameter.
  • The transformer model is evaluated in a deterministic and reproducible way. Hence the result does not depend on the exact GPU or CPU model nor on the number of configured threads. This key point ensures that a compressed file can be decompressed using a different hardware or software configuration.
  • In order to get reasonable speed, you need an Nvidia Ampere, ADA or Hopper GPU (e.g. RTX 3090, RTX 4090, RTX A6000, A100 or H100) with CUDA >= 12.x. At least 4 GB memory should be available on the GPU. x86 CPUs are supported too but the program is much slower. The CPU must support the AVX2 instruction set in order to run the program. The FFmpeg utility is required to convert input files to raw format.

freedb.dbpoweramp.com/~cddb/cddb.cgi

2024-05-02 13:39:41 by spoon | Views: 18390 | Comments: 5

We have restored freedb.dbpoweramp.com as a replacement for gnudb (which took-over from freedb.org), why? gnudb.org have started requiring emails to access their system. We do not agree with this type of intrusive data collection to access a publicly created database. It goes against the ethos of running a public database, especially as dBpoweramp users would have submitted a very significant percentage of all discs in that database.

Currently no submissions are allowed (there is little point in collecting good data in a bad design, there are so many collisions in freedb).

Going forward we will create a new community populated metadata database, it will be branded as part of the AccurateRip family, and will be open to all, correct many issues of freedb, and have a simple REST interface for looking up discs (based on AccurateRips disc ID). AccurateRip has existed without restrictions for almost 20 years, together we will create a high quality database. Watch this space...​

We are understanding that EAC will switch over to the new database also.

(this is the output of gnudb currently)

CD Drive Accuracy 2024

2024-04-29 00:04:36 by spoon | Views: 5451 | Comments: 0

Top Drives

AccurateRip collects data from all drives, normally this is only used to verify a disc is accurate, but can be reversed to calculate which drives are the most accurate (as measured by lowest % inaccurate tracks), on the basis that people who have a drive would have the same number of damaged disks as everyone else, on average.

This test was previously run in 2022, 2019, 2016, 2014, 2013, 2012, 2010, 2009 and 2006, as time goes on more submissions give a greater meaning to the results, only drives with over 4000 submissions and 40 users are used.

Note that MATSHITA is also known as Panasonic.
HL-DT-ST is Hitachi-LG Data Storage
TSSTcorp is Toshiba Samsung Storage Technology Corporation

Code: [Select]
Drive: HL-DT-ST - BD-RE  BH14NS48   (123 users):   Submissions: 10661 accurate, 29 inaccurate, 99.7287 % accuracy
Drive: TSSTcorp - BDDVDW SE-506BB   (212 users):   Submissions: 4014 accurate, 19 inaccurate, 99.5289 % accuracy
Drive: PIONEER  - BD-RW  BDR-S11JX   (103 users):   Submissions: 5809 accurate, 30 inaccurate, 99.4862 % accuracy
Drive: MATSHITA - DVD-R   UJ-898   (198 users):   Submissions: 5593 accurate, 30 inaccurate, 99.4665 % accuracy
Drive: HL-DT-ST - BD-RE  BH12NS38   (41 users):   Submissions: 4521 accurate, 26 inaccurate, 99.4282 % accuracy
Drive: MATSHITA - DVD-R   UJ-85J   (104 users):   Submissions: 4964 accurate, 29 inaccurate, 99.4192 % accuracy
Drive: MATSHITA - BD-CMB UJ160   (160 users):   Submissions: 9441 accurate, 58 inaccurate, 99.3894 % accuracy
Drive: PIONEER  - BD-RW   BDR-208M   (216 users):   Submissions: 10351 accurate, 66 inaccurate, 99.3664 % accuracy
Drive: PIONEER  - BD-RW   BDR-S09   (265 users):   Submissions: 31306 accurate, 207 inaccurate, 99.3431 % accuracy
Drive: MATSHITA - DVD-RAM UJ8G6   (74 users):   Submissions: 5551 accurate, 38 inaccurate, 99.3201 % accuracy
Drive: HL-DT-ST - DVDRAM GT51N   (161 users):   Submissions: 4943 accurate, 40 inaccurate, 99.1973 % accuracy
Drive: MATSHITA - DVD-RAM UJ-812   (50 users):   Submissions: 6399 accurate, 52 inaccurate, 99.1939 % accuracy
Drive: HL-DT-ST - DVD+-RW GT30N   (56 users):   Submissions: 20773 accurate, 169 inaccurate, 99.1930 % accuracy
Drive: ATAPI    - iHES208   2   (98 users):   Submissions: 7718 accurate, 63 inaccurate, 99.1903 % accuracy
Drive: HL-DT-ST - BD-RE  BH14NS40   (164 users):   Submissions: 4549 accurate, 40 inaccurate, 99.1283 % accuracy
Drive: hp       - BDDVDRW CH20L   (116 users):   Submissions: 6739 accurate, 60 inaccurate, 99.1175 % accuracy
Drive: PIONEER  - BD-RW   BDR-XD04   (214 users):   Submissions: 9158 accurate, 82 inaccurate, 99.1126 % accuracy
Drive: LITE-ON  - CD-RW SOHR-5238S   (86 users):   Submissions: 11288 accurate, 102 inaccurate, 99.1045 % accuracy
Drive: HL-DT-ST - BD-RE  BH16NS58   (96 users):   Submissions: 5141 accurate, 47 inaccurate, 99.0941 % accuracy
Drive: HL-DT-ST - DVDRAM GT34N   (145 users):   Submissions: 5419 accurate, 50 inaccurate, 99.0858 % accuracy
Drive: PIONEER  - BD-RW   BDR-XD07   (169 users):   Submissions: 7339 accurate, 68 inaccurate, 99.0819 % accuracy
Drive: PLEXTOR  - DVDR   PX-891SAW   (107 users):   Submissions: 4838 accurate, 45 inaccurate, 99.0784 % accuracy
Drive: MATSHITA - DVD-RAM UJ8B0AW   (142 users):   Submissions: 5162 accurate, 49 inaccurate, 99.0597 % accuracy
Drive: MATSHITA - CD-RW  CW-8124   (48 users):   Submissions: 6861 accurate, 68 inaccurate, 99.0186 % accuracy
Drive: PIONEER  - BD-RW   BDR-S08   (166 users):   Submissions: 20200 accurate, 201 inaccurate, 99.0148 % accuracy
Drive: TSSTcorp - DVD+-RW SH-216DB   (176 users):   Submissions: 4595 accurate, 46 inaccurate, 99.0088 % accuracy
Drive: PIONEER  - BD-RW  BDR-S12JX   (60 users):   Submissions: 7285 accurate, 77 inaccurate, 98.9541 % accuracy
Drive: MATSHITA - DVD-R   UJ-868   (140 users):   Submissions: 4254 accurate, 45 inaccurate, 98.9532 % accuracy
Drive: MATSHITA - DVD-RAM UJ-852   (155 users):   Submissions: 7210 accurate, 77 inaccurate, 98.9433 % accuracy
Drive: OPTIARC  - DVD RW AD-5680H   (93 users):   Submissions: 4751 accurate, 51 inaccurate, 98.9379 % accuracy
Drive: TSSTcorp - CDDVDW SH-216BB   (119 users):   Submissions: 13376 accurate, 146 inaccurate, 98.9203 % accuracy
Drive: HL-DT-ST - DVD+-RW GT32N   (198 users):   Submissions: 6137 accurate, 69 inaccurate, 98.8882 % accuracy
Drive: Slimtype - BD  E  DS6E2SH   (76 users):   Submissions: 6555 accurate, 74 inaccurate, 98.8837 % accuracy
Drive: PIONEER  - BD-RW   BDR-209M   (639 users):   Submissions: 22418 accurate, 254 inaccurate, 98.8797 % accuracy
Drive: PIONEER  - BD-RW   BDR-207M   (281 users):   Submissions: 17998 accurate, 205 inaccurate, 98.8738 % accuracy
Drive: TSSTcorp - CDDVDW SN-208FB   (228 users):   Submissions: 6079 accurate, 70 inaccurate, 98.8616 % accuracy
Drive: PLDS     - DVD+-RW DH-16AES   (188 users):   Submissions: 4831 accurate, 56 inaccurate, 98.8541 % accuracy
Drive: ATAPI    - iHAS124   W   (258 users):   Submissions: 13037 accurate, 154 inaccurate, 98.8325 % accuracy
Drive: PIONEER  - DVD-RW  DVR-106D   (173 users):   Submissions: 4170 accurate, 50 inaccurate, 98.8152 % accuracy
Drive: HL-DT-ST - DVDRW  GS21N   (56 users):   Submissions: 4296 accurate, 52 inaccurate, 98.8040 % accuracy
Drive: TSSTcorp - CDDVDW SE-218BB   (138 users):   Submissions: 7269 accurate, 88 inaccurate, 98.8039 % accuracy
Drive: HL-DT-ST - BD-RE BU40N   (318 users):   Submissions: 6912 accurate, 84 inaccurate, 98.7993 % accuracy
Drive: TSSTcorp - DVD-ROM TS-H352C   (127 users):   Submissions: 8150 accurate, 101 inaccurate, 98.7759 % accuracy
Drive: PLEXTOR  - CD-R   PX-W2410A   (137 users):   Submissions: 7533 accurate, 94 inaccurate, 98.7675 % accuracy
Drive: MATSHITA - BD-MLT UJ260   (146 users):   Submissions: 9489 accurate, 119 inaccurate, 98.7614 % accuracy
Drive: ASUS     - BW-16D1HT   (1144 users):   Submissions: 25821 accurate, 324 inaccurate, 98.7608 % accuracy
Drive: Slimtype - DVD A  DS8A4SH   (120 users):   Submissions: 5409 accurate, 68 inaccurate, 98.7584 % accuracy
Drive: ASUS     - SDRW-08U7M-U   (355 users):   Submissions: 6497 accurate, 82 inaccurate, 98.7536 % accuracy
Drive: HL-DT-ST - BD-RE  BH16NS55   (570 users):   Submissions: 17551 accurate, 225 inaccurate, 98.7342 % accuracy
Drive: ASUS     - DRW-24D3ST   (215 users):   Submissions: 7438 accurate, 96 inaccurate, 98.7258 % accuracy
Drive: TSSTcorp - CDDVDW SH-224FB   (308 users):   Submissions: 7246 accurate, 96 inaccurate, 98.6925 % accuracy
Drive: hp       - DVD A  DH16ABLH   (195 users):   Submissions: 11206 accurate, 149 inaccurate, 98.6878 % accuracy
Drive: MATSHITA - BD-MLT UJ265   (135 users):   Submissions: 5468 accurate, 73 inaccurate, 98.6825 % accuracy
Drive: PLDS     - DVD-RW DH16ACSH   (62 users):   Submissions: 8157 accurate, 110 inaccurate, 98.6694 % accuracy
Drive: Optiarc  - DVD+-RW AD-7250H   (47 users):   Submissions: 4292 accurate, 58 inaccurate, 98.6667 % accuracy
Drive: PLEXTOR  - CD-R   PX-230A   (147 users):   Submissions: 7413 accurate, 101 inaccurate, 98.6558 % accuracy
Drive: PLDS     - DVDRWBD DH-12E3S   (74 users):   Submissions: 4532 accurate, 62 inaccurate, 98.6504 % accuracy
Drive: MATSHITA - DVD-RAM UJ8E1   (253 users):   Submissions: 10919 accurate, 150 inaccurate, 98.6449 % accuracy
Drive: TSSTcorp - DVD+-RW TS-U633J   (246 users):   Submissions: 5675 accurate, 78 inaccurate, 98.6442 % accuracy
Drive: TSSTcorp - CDDVDW TS-H653Z   (168 users):   Submissions: 10815 accurate, 149 inaccurate, 98.6410 % accuracy
Drive: PLDS     - DVD-RW DS8A8SH   (342 users):   Submissions: 15565 accurate, 215 inaccurate, 98.6375 % accuracy
Drive: TSSTcorp - CD-DVDW SH-S183A   (547 users):   Submissions: 37086 accurate, 519 inaccurate, 98.6199 % accuracy
Drive: PLDS     - DVD+-RW DU-8A2S   (123 users):   Submissions: 7529 accurate, 106 inaccurate, 98.6117 % accuracy
Drive: PLEXTOR  - DVD-ROM PX-130A   (240 users):   Submissions: 8635 accurate, 122 inaccurate, 98.6068 % accuracy
Drive: HL-DT-ST - DVDRW  GX30N   (115 users):   Submissions: 7059 accurate, 100 inaccurate, 98.6032 % accuracy
Drive: LITE-ON  - DVDRW SHM-165H6S   (194 users):   Submissions: 12279 accurate, 175 inaccurate, 98.5948 % accuracy
Drive: hp       - DVDRW GUE1N   (198 users):   Submissions: 5596 accurate, 80 inaccurate, 98.5906 % accuracy
Drive: MATSHITA - DVD-RAM UJ8C0   (297 users):   Submissions: 8253 accurate, 118 inaccurate, 98.5904 % accuracy
Drive: HL-DT-ST - BD-RE  BH16NS40   (1176 users):   Submissions: 38235 accurate, 550 inaccurate, 98.5819 % accuracy
Drive: PIONEER  - DVD-RW  DVR-220L   (153 users):   Submissions: 5622 accurate, 81 inaccurate, 98.5797 % accuracy
Drive: ASUS     - BC-12D2HT   (404 users):   Submissions: 13684 accurate, 198 inaccurate, 98.5737 % accuracy
Drive: HL-DT-ST - DVDRAM GT30N   (759 users):   Submissions: 22043 accurate, 323 inaccurate, 98.5558 % accuracy
Drive: Optiarc  - DVD RW AD-7243S   (136 users):   Submissions: 5515 accurate, 81 inaccurate, 98.5525 % accuracy

For the full list see:

https://forum.dbpoweramp.com/forum/dbpoweramp/cd-ripper/324732-cd-drive-accuracy-2024