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   6     <title>Petter Reinholdtsen: Measuring the speaker frequency response using the AUDMES free software GUI - nice free software</title>
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  14  <h1>
  15      <a href="https://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
  16
  17  </h1>
  18
  19 </div>
  20
  21
  22     <div class="entry">
  23       <div class="title">Measuring the speaker frequency response using the AUDMES free software GUI - nice free software</div>
  24       <div class="date">22nd October 2018</div>
  25       <div class="body"><p><img src="https://people.skolelinux.org/pere/blog/images/2018-10-22-audmes-measure-speakers.png" align="right" width="40%"/></p>
  26
  27 <p>My current home stereo is a patchwork of various pieces I got on
  28 flee markeds over the years.  It is amazing what kind of equipment
  29 show up there.  I've been wondering for a while if it was possible to
  30 measure how well this equipment is working together, and decided to
  31 see how far I could get using free software.  After trawling the web I
  32 came across an article from DIY Audio and Video on
  33 <a href="https://www.diyaudioandvideo.com/Tutorial/SpeakerResponseTesting/">Speaker
  34 Testing and Analysis</a> describing how to test speakers, and it listing
  35 several software options, among them
  36 <a href="https://sourceforge.net/projects/audmes/">AUDio MEasurement
  37 System (AUDMES)</a>.  It is the only free software system I could find
  38 focusing on measuring speakers and audio frequency response.  In the
  39 process I also found an interesting article from NOVO on
  40 <a href="http://novo.press/understanding-speaker-specifications-and-frequency-response/">Understanding
  41 Speaker Specifications and Frequency Response</a> and an article from
  42 ecoustics on
  43 <a href="https://www.ecoustics.com/articles/understanding-speaker-frequency-response/">Understanding
  44 Speaker Frequency Response</a>, with a lot of information on what to
  45 look for and how to interpret the graphs.  Armed with this knowledge,
  46 I set out to measure the state of my speakers.</p>
  47
  48 <p>The first hurdle was that AUDMES hadn't seen a commit for 10 years
  49 and did not build with current compilers and libraries.  I got in
  50 touch with its author, who no longer was spending time on the program
  51 but gave me write access to the subversion repository on Sourceforge.
  52 The end result is that now the code build on Linux and is capable of
  53 saving and loading the collected frequency response data in CSV
  54 format.  The application is quite nice and flexible, and I was able to
  55 select the input and output audio interfaces independently.  This made
  56 it possible to use a USB mixer as the input source, while sending
  57 output via my laptop headphone connection.  I lacked the hardware and
  58 cabling to figure out a different way to get independent cabling to
  59 speakers and microphone.</p>
  60
  61 <p>Using this setup I could see how a large range of high frequencies
  62 apparently were not making it out of my speakers.  The picture show
  63 the frequency response measurement of one of the speakers.  Note the
  64 frequency lines seem to be slightly misaligned, compared to the CSV
  65 output from the program.  I can not hear several of these are high
  66 frequencies, according to measurement from
  67 <a href="http://freehearingtestsoftware.com">Free Hearing Test
  68 Software</a>, an freeware system to measure your hearing (still
  69 looking for a free software alternative), so I do not know if they are
  70 coming out out the speakers.  I thus do not quite know how to figure
  71 out if the missing frequencies is a problem with the microphone, the
  72 amplifier or the speakers, but I managed to rule out the audio card in my
  73 PC by measuring my Bose noise canceling headset using its own
  74 microphone.  This setup was able to see the high frequency tones, so
  75 the problem with my stereo had to be in the amplifier or speakers.</p>
  76
  77 <p>Anyway, to try to role out one factor I ended up picking up a new
  78 set of speakers at a flee marked, and these work a lot better than the
  79 old speakers, so I guess the microphone and amplifier is OK.  If you
  80 need to measure your own speakers, check out AUDMES.  If more people
  81 get involved, perhaps the project could become good enough to
  82 <a href="https://bugs.debian.org/910876">include in Debian</a>?  And if
  83 you know of some other free software to measure speakers and amplifier
  84 performance, please let me know.  I am aware of the freeware option
  85 <a href="https://www.roomeqwizard.com/">REW</a>, but I want something
  86 that can be developed also when the vendor looses interest.</p>
  87
  88 <p>As usual, if you use Bitcoin and want to show your support of my
  89 activities, please send Bitcoin donations to my address
  90 <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
  91 </div>
  92
  93       <div class="tags">Tags: <a href="https://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="https://people.skolelinux.org/pere/blog/tags/nice free software">nice free software</a>.</div>
  94
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  96     </div>
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 102
 103
 104
 105 <h2>Archive</h2>
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 140 <li>2022
 141 <ul>
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 143 <li><a href="https://people.skolelinux.org/pere/blog/archive/2022/02/">February (1)</a></li>
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 160
 161 <li>2021
 162 <ul>
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 164 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/01/">January (2)</a></li>
 165
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 171
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 173
 174 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/08/">August (1)</a></li>
 175
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 177
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 179
 180 <li><a href="https://people.skolelinux.org/pere/blog/archive/2021/12/">December (1)</a></li>
 181
 182 </ul></li>
 183
 184 <li>2020
 185 <ul>
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 187 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/02/">February (2)</a></li>
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 198
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 200
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 202
 203 <li><a href="https://people.skolelinux.org/pere/blog/archive/2020/11/">November (1)</a></li>
 204
 205 </ul></li>
 206
 207 <li>2019
 208 <ul>
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 211
 212 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/02/">February (3)</a></li>
 213
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 219
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 221
 222 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/08/">August (1)</a></li>
 223
 224 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/09/">September (1)</a></li>
 225
 226 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/11/">November (1)</a></li>
 227
 228 <li><a href="https://people.skolelinux.org/pere/blog/archive/2019/12/">December (4)</a></li>
 229
 230 </ul></li>
 231
 232 <li>2018
 233 <ul>
 234
 235 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/01/">January (1)</a></li>
 236
 237 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/02/">February (5)</a></li>
 238
 239 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/03/">March (5)</a></li>
 240
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 242
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 244
 245 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/07/">July (5)</a></li>
 246
 247 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/08/">August (3)</a></li>
 248
 249 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/09/">September (3)</a></li>
 250
 251 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/10/">October (5)</a></li>
 252
 253 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/11/">November (2)</a></li>
 254
 255 <li><a href="https://people.skolelinux.org/pere/blog/archive/2018/12/">December (4)</a></li>
 256
 257 </ul></li>
 258
 259 <li>2017
 260 <ul>
 261
 262 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/01/">January (4)</a></li>
 263
 264 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/02/">February (3)</a></li>
 265
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 267
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 269
 270 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/06/">June (5)</a></li>
 271
 272 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/07/">July (1)</a></li>
 273
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 275
 276 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/09/">September (3)</a></li>
 277
 278 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/10/">October (5)</a></li>
 279
 280 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/11/">November (3)</a></li>
 281
 282 <li><a href="https://people.skolelinux.org/pere/blog/archive/2017/12/">December (4)</a></li>
 283
 284 </ul></li>
 285
 286 <li>2016
 287 <ul>
 288
 289 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/01/">January (3)</a></li>
 290
 291 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/02/">February (2)</a></li>
 292
 293 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/03/">March (3)</a></li>
 294
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 296
 297 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/05/">May (8)</a></li>
 298
 299 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/06/">June (2)</a></li>
 300
 301 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/07/">July (2)</a></li>
 302
 303 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/08/">August (5)</a></li>
 304
 305 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/09/">September (2)</a></li>
 306
 307 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/10/">October (3)</a></li>
 308
 309 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/11/">November (8)</a></li>
 310
 311 <li><a href="https://people.skolelinux.org/pere/blog/archive/2016/12/">December (5)</a></li>
 312
 313 </ul></li>
 314
 315 <li>2015
 316 <ul>
 317
 318 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/01/">January (7)</a></li>
 319
 320 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/02/">February (6)</a></li>
 321
 322 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/03/">March (1)</a></li>
 323
 324 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/04/">April (4)</a></li>
 325
 326 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/05/">May (3)</a></li>
 327
 328 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/06/">June (4)</a></li>
 329
 330 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/07/">July (6)</a></li>
 331
 332 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/08/">August (2)</a></li>
 333
 334 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/09/">September (2)</a></li>
 335
 336 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/10/">October (9)</a></li>
 337
 338 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/11/">November (6)</a></li>
 339
 340 <li><a href="https://people.skolelinux.org/pere/blog/archive/2015/12/">December (3)</a></li>
 341
 342 </ul></li>
 343
 344 <li>2014
 345 <ul>
 346
 347 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/01/">January (2)</a></li>
 348
 349 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/02/">February (3)</a></li>
 350
 351 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/03/">March (8)</a></li>
 352
 353 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/04/">April (7)</a></li>
 354
 355 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/05/">May (1)</a></li>
 356
 357 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/06/">June (2)</a></li>
 358
 359 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/07/">July (2)</a></li>
 360
 361 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/08/">August (2)</a></li>
 362
 363 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/09/">September (5)</a></li>
 364
 365 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/10/">October (6)</a></li>
 366
 367 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/11/">November (3)</a></li>
 368
 369 <li><a href="https://people.skolelinux.org/pere/blog/archive/2014/12/">December (5)</a></li>
 370
 371 </ul></li>
 372
 373 <li>2013
 374 <ul>
 375
 376 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/01/">January (11)</a></li>
 377
 378 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/02/">February (9)</a></li>
 379
 380 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/03/">March (9)</a></li>
 381
 382 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/04/">April (6)</a></li>
 383
 384 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/05/">May (9)</a></li>
 385
 386 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/06/">June (10)</a></li>
 387
 388 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/07/">July (7)</a></li>
 389
 390 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/08/">August (3)</a></li>
 391
 392 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/09/">September (5)</a></li>
 393
 394 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/10/">October (7)</a></li>
 395
 396 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/11/">November (9)</a></li>
 397
 398 <li><a href="https://people.skolelinux.org/pere/blog/archive/2013/12/">December (3)</a></li>
 399
 400 </ul></li>
 401
 402 <li>2012
 403 <ul>
 404
 405 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/01/">January (7)</a></li>
 406
 407 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/02/">February (10)</a></li>
 408
 409 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/03/">March (17)</a></li>
 410
 411 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/04/">April (12)</a></li>
 412
 413 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/05/">May (12)</a></li>
 414
 415 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/06/">June (20)</a></li>
 416
 417 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/07/">July (17)</a></li>
 418
 419 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/08/">August (6)</a></li>
 420
 421 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/09/">September (9)</a></li>
 422
 423 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/10/">October (17)</a></li>
 424
 425 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/11/">November (10)</a></li>
 426
 427 <li><a href="https://people.skolelinux.org/pere/blog/archive/2012/12/">December (7)</a></li>
 428
 429 </ul></li>
 430
 431 <li>2011
 432 <ul>
 433
 434 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/01/">January (16)</a></li>
 435
 436 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/02/">February (6)</a></li>
 437
 438 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/03/">March (6)</a></li>
 439
 440 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/04/">April (7)</a></li>
 441
 442 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/05/">May (3)</a></li>
 443
 444 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/06/">June (2)</a></li>
 445
 446 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/07/">July (7)</a></li>
 447
 448 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/08/">August (6)</a></li>
 449
 450 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/09/">September (4)</a></li>
 451
 452 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/10/">October (2)</a></li>
 453
 454 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/11/">November (3)</a></li>
 455
 456 <li><a href="https://people.skolelinux.org/pere/blog/archive/2011/12/">December (1)</a></li>
 457
 458 </ul></li>
 459
 460 <li>2010
 461 <ul>
 462
 463 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
 464
 465 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
 466
 467 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
 468
 469 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
 470
 471 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
 472
 473 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/06/">June (14)</a></li>
 474
 475 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
 476
 477 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/08/">August (13)</a></li>
 478
 479 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/09/">September (7)</a></li>
 480
 481 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/10/">October (9)</a></li>
 482
 483 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/11/">November (13)</a></li>
 484
 485 <li><a href="https://people.skolelinux.org/pere/blog/archive/2010/12/">December (12)</a></li>
 486
 487 </ul></li>
 488
 489 <li>2009
 490 <ul>
 491
 492 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
 493
 494 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
 495
 496 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
 497
 498 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
 499
 500 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
 501
 502 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
 503
 504 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
 505
 506 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
 507
 508 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
 509
 510 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
 511
 512 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
 513
 514 <li><a href="https://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
 515
 516 </ul></li>
 517
 518 <li>2008
 519 <ul>
 520
 521 <li><a href="https://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
 522
 523 <li><a href="https://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
 524
 525 </ul></li>
 526
 527 </ul>
 528
 529
 530
 531 <h2>Tags</h2>
 532 <ul>
 533
 534  <li><a href="https://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (19)</a></li>
 535
 536  <li><a href="https://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
 537
 538  <li><a href="https://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
 539
 540  <li><a href="https://people.skolelinux.org/pere/blog/tags/bankid">bankid (4)</a></li>
 541
 542  <li><a href="https://people.skolelinux.org/pere/blog/tags/betalkontant">betalkontant (9)</a></li>
 543
 544  <li><a href="https://people.skolelinux.org/pere/blog/tags/bitcoin">bitcoin (12)</a></li>
 545
 546  <li><a href="https://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (17)</a></li>
 547
 548  <li><a href="https://people.skolelinux.org/pere/blog/tags/bsa">bsa (2)</a></li>
 549
 550  <li><a href="https://people.skolelinux.org/pere/blog/tags/chrpath">chrpath (3)</a></li>
 551
 552  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian">debian (197)</a></li>
 553
 554  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (159)</a></li>
 555
 556  <li><a href="https://people.skolelinux.org/pere/blog/tags/debian-handbook">debian-handbook (9)</a></li>
 557
 558  <li><a href="https://people.skolelinux.org/pere/blog/tags/digistan">digistan (11)</a></li>
 559
 560  <li><a href="https://people.skolelinux.org/pere/blog/tags/dld">dld (18)</a></li>
 561
 562  <li><a href="https://people.skolelinux.org/pere/blog/tags/docbook">docbook (32)</a></li>
 563
 564  <li><a href="https://people.skolelinux.org/pere/blog/tags/drivstoffpriser">drivstoffpriser (4)</a></li>
 565
 566  <li><a href="https://people.skolelinux.org/pere/blog/tags/english">english (456)</a></li>
 567
 568  <li><a href="https://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (23)</a></li>
 569
 570  <li><a href="https://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (14)</a></li>
 571
 572  <li><a href="https://people.skolelinux.org/pere/blog/tags/freeculture">freeculture (34)</a></li>
 573
 574  <li><a href="https://people.skolelinux.org/pere/blog/tags/freedombox">freedombox (9)</a></li>
 575
 576  <li><a href="https://people.skolelinux.org/pere/blog/tags/frikanalen">frikanalen (20)</a></li>
 577
 578  <li><a href="https://people.skolelinux.org/pere/blog/tags/h264">h264 (20)</a></li>
 579
 580  <li><a href="https://people.skolelinux.org/pere/blog/tags/intervju">intervju (43)</a></li>
 581
 582  <li><a href="https://people.skolelinux.org/pere/blog/tags/isenkram">isenkram (16)</a></li>
 583
 584  <li><a href="https://people.skolelinux.org/pere/blog/tags/kart">kart (23)</a></li>
 585
 586  <li><a href="https://people.skolelinux.org/pere/blog/tags/kodi">kodi (6)</a></li>
 587
 588  <li><a href="https://people.skolelinux.org/pere/blog/tags/ldap">ldap (9)</a></li>
 589
 590  <li><a href="https://people.skolelinux.org/pere/blog/tags/lego">lego (5)</a></li>
 591
 592  <li><a href="https://people.skolelinux.org/pere/blog/tags/lenker">lenker (8)</a></li>
 593
 594  <li><a href="https://people.skolelinux.org/pere/blog/tags/linuxcnc">linuxcnc (5)</a></li>
 595
 596  <li><a href="https://people.skolelinux.org/pere/blog/tags/lsdvd">lsdvd (2)</a></li>
 597
 598  <li><a href="https://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
 599
 600  <li><a href="https://people.skolelinux.org/pere/blog/tags/madewithcc">madewithcc (3)</a></li>
 601
 602  <li><a href="https://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (8)</a></li>
 603
 604  <li><a href="https://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (46)</a></li>
 605
 606  <li><a href="https://people.skolelinux.org/pere/blog/tags/nice free software">nice free software (15)</a></li>
 607
 608  <li><a href="https://people.skolelinux.org/pere/blog/tags/noark5">noark5 (24)</a></li>
 609
 610  <li><a href="https://people.skolelinux.org/pere/blog/tags/norsk">norsk (323)</a></li>
 611
 612  <li><a href="https://people.skolelinux.org/pere/blog/tags/nuug">nuug (198)</a></li>
 613
 614  <li><a href="https://people.skolelinux.org/pere/blog/tags/offentlig innsyn">offentlig innsyn (40)</a></li>
 615
 616  <li><a href="https://people.skolelinux.org/pere/blog/tags/open311">open311 (2)</a></li>
 617
 618  <li><a href="https://people.skolelinux.org/pere/blog/tags/opensnitch">opensnitch (4)</a></li>
 619
 620  <li><a href="https://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (76)</a></li>
 621
 622  <li><a href="https://people.skolelinux.org/pere/blog/tags/personvern">personvern (114)</a></li>
 623
 624  <li><a href="https://people.skolelinux.org/pere/blog/tags/raid">raid (2)</a></li>
 625
 626  <li><a href="https://people.skolelinux.org/pere/blog/tags/reactos">reactos (1)</a></li>
 627
 628  <li><a href="https://people.skolelinux.org/pere/blog/tags/reprap">reprap (11)</a></li>
 629
 630  <li><a href="https://people.skolelinux.org/pere/blog/tags/rfid">rfid (3)</a></li>
 631
 632  <li><a href="https://people.skolelinux.org/pere/blog/tags/robot">robot (17)</a></li>
 633
 634  <li><a href="https://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
 635
 636  <li><a href="https://people.skolelinux.org/pere/blog/tags/ruter">ruter (7)</a></li>
 637
 638  <li><a href="https://people.skolelinux.org/pere/blog/tags/scraperwiki">scraperwiki (2)</a></li>
 639
 640  <li><a href="https://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (60)</a></li>
 641
 642  <li><a href="https://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (4)</a></li>
 643
 644  <li><a href="https://people.skolelinux.org/pere/blog/tags/skepsis">skepsis (5)</a></li>
 645
 646  <li><a href="https://people.skolelinux.org/pere/blog/tags/standard">standard (75)</a></li>
 647
 648  <li><a href="https://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (7)</a></li>
 649
 650  <li><a href="https://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (14)</a></li>
 651
 652  <li><a href="https://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (65)</a></li>
 653
 654  <li><a href="https://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (5)</a></li>
 655
 656  <li><a href="https://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
 657
 658  <li><a href="https://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
 659
 660  <li><a href="https://people.skolelinux.org/pere/blog/tags/verkidetfri">verkidetfri (22)</a></li>
 661
 662  <li><a href="https://people.skolelinux.org/pere/blog/tags/video">video (80)</a></li>
 663
 664  <li><a href="https://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
 665
 666  <li><a href="https://people.skolelinux.org/pere/blog/tags/web">web (42)</a></li>
 667
 668 </ul>
 669
 670
 671     </div>
 672     <p style="text-align: right">
 673  Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v4.6</a>
 674 </p>
 675
 676   </body>
 677 </html>