yellowantphil Posted March 23, 2014 Share Posted March 23, 2014 Poweramp version 2.0.9-build-554-play (Full Version)My phone: Alcatel One Touch EvolveAndroid version 4.1.2Stock ROMI also submitted this on the bug reporting document on Google Docs I was trying to equalize my car stereo using a pink noise track played through Poweramp, analyzing the spectrum using a microphone and a ten-band hardware frequency analyzer (built into my home stereo equalizer). The sliders in the Poweramp EQ all control the frequency band one octave lower than they’re supposed to. To demonstrate this, I set Poweramp's equalizer this way:Preamp -10 dBOne slider set to +10 dBAll other sliders 0 dBTone control off, limiter off, EQ control onI played pink noise through Poweramp and recorded it onto my computer. I then analyzed the frequency spectrum in Audacity. Setting the 16 kHz slider to +10 dB shows a peak at 8 kHz and another one 16 kHz in the recorded audio. The sliders from 62 Hz to 8 kHz all give peak output at half of their labeled frequencies. I think that the 31 Hz slider was trying to output a peak at 15 Hz, but my phone can't seem to output such deep frequencies.The equalizer works fine if you always move the slider that is one higher than the frequency band you are trying to control, but I can't control the 16 kHz band individually. This also makes it difficult to use my hardware frequency analyzer, because I have to remember to always move the slider one higher than the band I am looking at on the analyzer display. Link to comment Share on other sites More sharing options...
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