I may include that into my correction in case the phenomenon keeps to persist. As it turned out the gain for the air frequencies is much higher than I prefer in practice, listening to music. I boosted those frequencies until I was really sure I could hear the sizzle turning the tone on and off. The upper end around 10 kHz is really hard to judge because of its high pitch. The bass is lacking, as already mentioned. However, what you can see already is that my personal preference curve (which is the smoothed average of several loudness experiments I did in the past weeks) is right in middle between the first and second run with your calibration tool for 300 Hz to 10 kHz. I may repeat the test in near future to gather more data and get more confident with the technical procedure. So there may be some discrepancies due to the headphones seating and physiological fatigue. There were a few hours between the two tests. Speaking of correction, here is the compensation curve of your calibration tool (1.0) compared to my personal preference: The result is pretty much what you would expect looking at the graphs above: a very boomy profile with recessed upper mids and presence.Īt that point I ask myself why the curves I created with your calibration tool are so bright, even with the correction applied. Before you ask: I used the graphical equalizer and matched the bands to those of the reference, of course. I confirmed the observation above by listening to the sine waves generated by your calibration tool but adjusting the faders in the EQ APO editor instead. So you would actually take bass away instead of adding it. In theory you would have to apply the grey curve to convert the 0 Phon response you detected with the calibration tool to get something that sounds more or less balanced at average listening levels. Each individual has a unique hearing and every headphones set has its own audio profile.Īs you can see the 0 Phon curve should lead to a strong bass boost of up to 37 dB which is even further emphasized by the attenuation between 1 kHz and 6 kHz, all compared to the average of 80 Phon. There doesn't exist something like a common hearing/headphones. One note: the Equal-loudness contour itself is arbitray. You can think of a few like "Give me more bass". In a future version we want to offer more types of correction. this is still possible if a user just want that way to go. Using an uncorrected Equal-loudness contour is fine but it would mean that a Peace user needs to introduce bass and treble himself. Perhaps the most important one is that people searching for "the best equalization" for their headphones want a rather "quick fix". Of course this is abitrary but there are several reasons for this. This threshold is the same as the 0 Phon contour.Īs we found that using the Equal-loudness contour resulted into a very flat bass we decided to introduce more bass by correcting the contour. By listening to a sine whilst lowering its volume till it becomes unhearable the threshold of a test frequency is determined. This is chosen because of the way a test profile of one's headphones/hearing is built up. I would welcome a customizable number of bands, a selection of noise vs sine and varying levels for the compensation curve.Ĭlick to expand.The curve used is the Equal-loudness contour at 0 Phon which is the hearing threshold. Since the lower region is somewhat fiddly with random noise I compare my findings to some steps of sine waves to make sure the bass is correct.ĭo you plan to expand the features of the module in the future? Personally I do all my loudness equalizations with narrow band pink noise and 31 bands on my average listening level. This gets particularly critical the higher you move up in frequency where all sorts of narrow band intefereneces appear (depending on the individual anatomy in correlation with the characteristics of the headphone). To me that makes perfect sense since some headphones come with a very wobbly response which can introduce sensible errors unless you significantly increase the number of bands. He recommends the use of narrow band noise instead of pure sine tones. ![]() I had good success with David Griesinger's loudness equalization procedure in the past, tuning my headphones to my average listening level (skipping the HRTF part). Wouldn't it be better to choose the average of 80 Phon instead? ![]() May I ask what the corrected curve does apply? Is it a rough compensation for higher listening levels, resulting in less treble and bass emphasis compared to the "boosted" hearing threshold curve? Comparing the graphs it looks like you added the 100 Phon curve. I hope that will change with your implementation in Peace. Loudness equalizations get way to little love in the community.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |