Hotdog Posted November 30, 2014 Report Share Posted November 30, 2014 Spek – Acoustic Spectrum Analyser Link to program -- > http://spek.cc/ Helps to analyse your audio files by showing their spectrogram. I am going to play around with this and weed out some garbage music in my collection. For reference I am using one track with different compression and I will provide the spectograph and the dynamic range information. Track - Billie Jean -------------------------------------------------------------------------------- Statistics for: 01-billie jean (original) Number of samples: 16719599 Duration: 6:19 -------------------------------------------------------------------------------- Left Right Peak Value: -0.54 dB --- -0.43 dB Avg RMS: -15.51 dB --- -14.88 dB DR channel: 13.31 dB --- 12.61 dB -------------------------------------------------------------------------------- Official DR Value: DR13 ================================================================================ -------------------------------------------------------------------------------- Statistics for: 01-Billie Jean Number of samples: 56378880 Duration: 4:53 -------------------------------------------------------------------------------- Left Right Peak Value: -0.39 dB --- -0.09 dB Avg RMS: -15.88 dB --- -15.76 dB DR channel: 13.63 dB --- 14.10 dB -------------------------------------------------------------------------------- Official DR Value: DR14 ================================================================================ -------------------------------------------------------------------------------- Statistics for: 06-billie jean Number of samples: 12962927 Duration: 4:54 -------------------------------------------------------------------------------- Left Right Peak Value: 0.00 dB --- 0.00 dB Avg RMS: -9.29 dB --- -9.45 dB DR channel: 8.06 dB --- 8.25 dB -------------------------------------------------------------------------------- Official DR Value: DR8 ================================================================================ -------------------------------------------------------------------------------- Statistics for: 06-billie jean Number of samples: 12983663 Duration: 4:55 -------------------------------------------------------------------------------- Left Right Peak Value: 0.00 dB --- 0.00 dB Avg RMS: -15.43 dB --- -15.47 dB DR channel: 14.25 dB --- 14.25 dB -------------------------------------------------------------------------------- Official DR Value: DR14 ================================================================================ (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
SIDE SHOW Posted December 1, 2014 Report Share Posted December 1, 2014 School me plz.......... whats the point of this Link to comment Share on other sites More sharing options...
gckless Posted December 1, 2014 Report Share Posted December 1, 2014 What are you looking for specifically? "Clipping" is the biggest forum boner now. It's like witchcraft... it automatically explains just about everything people don't understand. My build log: http://www.stevemeadedesigns.com/board/topic/200295-gckless-2011-chevrolet-impala/ High resolution photos: Gilbert Kless Photography Link to comment Share on other sites More sharing options...
Hotdog Posted December 1, 2014 Author Report Share Posted December 1, 2014 Looking at how different compression effects the music we listen to. Now if you are listening on equipment that is on the lower end scale you may not be able to hear a big difference on some of them. If you look at the spectrographs it shows how the more compressed the song was the more cut off it was. Dynamic range actually analyzes the track and you can compare the Dynamic range outputs too. Here is a couple links https://www.izotope.com/en/community/blog/tips-tutorials/2014/09/how-to-use-a-spectrogram-to-identify-audio-problems/ http://home.cc.umanitoba.ca/~robh/howto.html (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
SIDE SHOW Posted December 1, 2014 Report Share Posted December 1, 2014 like when you listen to a mp3 and all the diff freq seem mashed in together and sound horrible...... this helps to separate those freqs correct? Link to comment Share on other sites More sharing options...
Hotdog Posted December 2, 2014 Author Report Share Posted December 2, 2014 Here is something you can try if you want to know what the difference could be. Take your highest quality flac file and compare it to same track recorded with different bit rates. Now open each file in to Audacity and apply a hi pass filter on the song at 10000Kz or even 15000Khz and export the file. for example Open 128kbs song cut at 10000Khz then export to new file 320kbs MP3 Open 192kbs song cut at 10000Khz then export to new file 320kbs MP3 Open 320kbs song cut at 10000Khz then export to new file 320kbs MP3 Open Flac song Cut at 10000Khz then export to new file Flac file max settings When you do this and then play back the song you should be able to hear a pretty good difference on what has changed due to compression. Compression cuts out a lot of the higher frequencies. (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
Hotdog Posted December 2, 2014 Author Report Share Posted December 2, 2014 like when you listen to a mp3 and all the diff freq seem mashed in together and sound horrible...... this helps to separate those freqs correct? That could be due to the remastering to the ordinal track. They may have boosted certain frequencies which shows up darker in the Spectrogram. When you try cutting of frequencies with a high pass filter you can really tell which frequencies they have boosted. (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
SIDE SHOW Posted December 2, 2014 Report Share Posted December 2, 2014 awesome, cheers hotdawg Link to comment Share on other sites More sharing options...
Hotdog Posted December 2, 2014 Author Report Share Posted December 2, 2014 Here is another good read http://www.soundonsound.com/sos/apr12/articles/lost-in-translation.htm (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
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