- Μηνύματα
- 43.594
- Reaction score
- 78.816
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Μετρήθηκαν 283 ακουστικά με τιμές απο $4 έως $5000+.
http://www.audioholics.com/loudspeaker-design/price-sound-quality-headphones
http://asa.scitation.org/doi/full/10.1121/1.4984044
Conclusions
•
Based on the evaluation of the mean, variance, PCA, and mean square error with respect to a target function, no correlation could be observed between the measured magnitude response and retail price of headphones. However, the variance in low-frequency response seems to decrease with increasing price, indicating an improved bass response measurement consistency across headphones in the higher price range. It is however unclear whether this improved consistency with a higher retail price is the result of better headphones or better repeatability of measurements with more expensive models. Nevertheless, assuming that the perceived audio quality is largely determined by the spectral magnitude response of headphones, there are plenty of relatively cheap models that match the assumed target function, as well as very expensive ones that deviate significantly from an assumed ideal response.
•
On average, IE headphone measurements demonstrate slightly more bass than CA and SA headphones. The difference amounts to approximately 4 dB at 100 Hz. This finding is in line with subjective preference ratings reported by Olive et al. (2016). The observed higher bass response could be resulting from a greater seal between headphones and artificial ear compared to the seal for human ears (ITU-T P.380, 2003).
•
CA and IE headphones have a response that (on average) more closely mimics the target curve proposed by Olive and Welti (2015) than SA headphones.
•
The target function suggested by Olive and Welti (2015) is fairly similar to the average headphone response found in this study, with the exception of a deviation of up to about 5 dB for frequencies between 50 Hz and 2 kHz.
•
PCA can account for 90% of the variance across all measured headphones with six eigenvectors. The first eigenvector is similar to published target responses, while the second eigenvector represents a global spectral tilt.
Μετρήθηκαν 283 ακουστικά με τιμές απο $4 έως $5000+.
http://www.audioholics.com/loudspeaker-design/price-sound-quality-headphones
http://asa.scitation.org/doi/full/10.1121/1.4984044
Conclusions
•
Based on the evaluation of the mean, variance, PCA, and mean square error with respect to a target function, no correlation could be observed between the measured magnitude response and retail price of headphones. However, the variance in low-frequency response seems to decrease with increasing price, indicating an improved bass response measurement consistency across headphones in the higher price range. It is however unclear whether this improved consistency with a higher retail price is the result of better headphones or better repeatability of measurements with more expensive models. Nevertheless, assuming that the perceived audio quality is largely determined by the spectral magnitude response of headphones, there are plenty of relatively cheap models that match the assumed target function, as well as very expensive ones that deviate significantly from an assumed ideal response.
•
On average, IE headphone measurements demonstrate slightly more bass than CA and SA headphones. The difference amounts to approximately 4 dB at 100 Hz. This finding is in line with subjective preference ratings reported by Olive et al. (2016). The observed higher bass response could be resulting from a greater seal between headphones and artificial ear compared to the seal for human ears (ITU-T P.380, 2003).
•
CA and IE headphones have a response that (on average) more closely mimics the target curve proposed by Olive and Welti (2015) than SA headphones.
•
The target function suggested by Olive and Welti (2015) is fairly similar to the average headphone response found in this study, with the exception of a deviation of up to about 5 dB for frequencies between 50 Hz and 2 kHz.
•
PCA can account for 90% of the variance across all measured headphones with six eigenvectors. The first eigenvector is similar to published target responses, while the second eigenvector represents a global spectral tilt.
