Spectrogram viewer for quality test

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dalarath
Posts: 18
Joined: Tue Jan 15, 2013 10:59 pm

Spectrogram viewer for quality test

Post by dalarath » Tue Jan 15, 2013 11:58 pm

Would it be possible to include a spectrogram viewer to MM???

This spectrogram is used to perform a sound quality check of your tracks by simply looking the shape (maximum value) of the higher frequencies. This is very useful if you have a 320 kbps track and you want to see if is realy a 320 kbps track or a less quality converted to 320.

You can guess the real quality of a file without even having to put your ears to the test.

This is a example of spectrogram:
http://i.imgur.com/ChcX2.jpg

If the frequencies are around 20 kHz the quality is high. Less frequencies mean less quality (14 kHz means 128 kbps).


Would it be posible to include this feature to MM???

rovingcowboy
Posts: 14153
Joined: Sat Oct 25, 2003 7:57 am
Location: (Texas)
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Re: Spectrogram viewer for quality test

Post by rovingcowboy » Wed Jan 16, 2013 7:50 am

Spectrogram is in some skins, as the av effect. 8)
roving cowboy / keith hall. My skins http://www.mediamonkey.com/forum/viewto ... =9&t=16724 for some help check on Monkey's helpful messages at http://www.mediamonkey.com/forum/viewto ... 4008#44008 MY SYSTEMS.1.Jukebox WinXp pro sp 3 version 3.5 gigabyte mb. 281 GHz amd athlon x2 240 built by me.) 2.WinXP pro sp3, vers 2.5.5 and vers 3.5 backup storage, shuttle 32a mb,734 MHz amd athlon put together by me.) 3.Dell demension, winxp pro sp3, mm3.5 spare jukebox.) 4.WinXp pro sp3, vers 3.5, dad's computer bought from computer store. )5. Samsung Galaxy 5 Android 5) 6. Proscan tablet Android 4.3 ) 7. amd a8-5600 apu 3.60ghz mm version 4 windows 7 pro bought from computer store.

dalarath
Posts: 18
Joined: Tue Jan 15, 2013 10:59 pm

Re: Spectrogram viewer for quality test

Post by dalarath » Wed Jan 16, 2013 2:12 pm

are you talking about this???
http://i50.tinypic.com/2yx261z.png

That is not what I'm talking about. What I'm asking is if would be posible a spectrograph like the one in the image below (the multicolor graph, the big one):
http://i.imgur.com/ChcX2.jpg

The only thing that interests me is the maximum average frequency, because thats what defines de quality of the track. If its not possible to improve a HD graph like in the image in MM, it could also serve something (script, plugin) that calculates the max frequency I'm interested in.

FOR EXAMPLE, IN THIS IMAGE http://i.imgur.com/ChcX2.jpg, WE CAN OBSEVE, BY SEEING THE GRAPH, THAT THE MAX FREQUENCY IS ABOUT 18 kHz. THAT IS WHAT THE SPECTROGRAPH IS USED FOR (IN THIS CASE). TO OBTAIN THE VALUE OF THE MAX FRQUENCY.

As I said on the first post, this can be used for checking the quality of your tracks. I see it very useful especially to detect fake bitrates (for example: a 320 kbps that is actually a 128 kbps, has a bigger size ( 9 Mb) that a 128 kbps file with 128 kbps quality (2 Mb), so by knowing the real quality of the track you can set the size to the real quality by converting the trak to a 128 kbps file and save some space. dont know if you get it)

Here is a fine tutorial that explains better what I'm trying to say:
http://www.techsupportalert.com/How-to- ... audio-file

rovingcowboy
Posts: 14153
Joined: Sat Oct 25, 2003 7:57 am
Location: (Texas)
Contact:

Re: Spectrogram viewer for quality test

Post by rovingcowboy » Wed Jan 16, 2013 3:40 pm

Yep it sure is going to be something for the script writers to work on.
roving cowboy / keith hall. My skins http://www.mediamonkey.com/forum/viewto ... =9&t=16724 for some help check on Monkey's helpful messages at http://www.mediamonkey.com/forum/viewto ... 4008#44008 MY SYSTEMS.1.Jukebox WinXp pro sp 3 version 3.5 gigabyte mb. 281 GHz amd athlon x2 240 built by me.) 2.WinXP pro sp3, vers 2.5.5 and vers 3.5 backup storage, shuttle 32a mb,734 MHz amd athlon put together by me.) 3.Dell demension, winxp pro sp3, mm3.5 spare jukebox.) 4.WinXp pro sp3, vers 3.5, dad's computer bought from computer store. )5. Samsung Galaxy 5 Android 5) 6. Proscan tablet Android 4.3 ) 7. amd a8-5600 apu 3.60ghz mm version 4 windows 7 pro bought from computer store.

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