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General Car Audio
Test Tones
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<blockquote data-quote="boister77" data-source="post: 1081800" data-attributes="member: 551366"><p>for tones in the 43hz - 17khz, yes. mp3 compression does filter out frequencies that are unaubile. i've done a frequency response test for a 20hz-20khz sweep and at around 17khz, there's cutoff. however, as mentioned above, for some reason my analyzer stops at 43hz. but when i play 20hz 192 compressed file, the vu meters are reading 0db.</p><p></p><p>btw, some files weren't created at 0db. the defualt setting for my generator is -1db to prevent clipping. i can adjust the gain/trim to make it 0db but i forget to do it sometimes. if you do find files that are not 0db. let me know and i will fix it.</p></blockquote><p></p>
[QUOTE="boister77, post: 1081800, member: 551366"] for tones in the 43hz - 17khz, yes. mp3 compression does filter out frequencies that are unaubile. i've done a frequency response test for a 20hz-20khz sweep and at around 17khz, there's cutoff. however, as mentioned above, for some reason my analyzer stops at 43hz. but when i play 20hz 192 compressed file, the vu meters are reading 0db. btw, some files weren't created at 0db. the defualt setting for my generator is -1db to prevent clipping. i can adjust the gain/trim to make it 0db but i forget to do it sometimes. if you do find files that are not 0db. let me know and i will fix it. [/QUOTE]
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