bibo01
Active Member
- Joined
- Mar 10, 2016
- Messages
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I was not at all interested in seeing the difference on the vertical axis. What interested me above anything else was establishing a (approximate) "value" on the X axis (Time axis) as the difference was rather macroscopic.
After all, a 14mV deviation (on vertical axis) is equivalent to a difference of about 0,12 dB! As shown in many graphs (analyzed by software programs with high discretization), the files also show differences in amplitude. Such differences, given that the files (let me repeat - several) were played by a subsequent DAC, could very well swing of 14mV (0,12db). Therefore, although your observation as some logic, in this case I do not agree with it.
With a cyclic signal my device running "empty" (sorry for bad translation) has a very low error on Y, despite its 8/12 bits of vertical resolution, which it is also found in oscilloscopes of $350,000.
I usually use a setup with noise measurement (on FFT at 1,048,576 points) of approximately -170dB, so resolution is very high...like your AP which I have also directly compared to with identical results.
For each analysis the most "appropriate" tool must be used.
Here we are talking about differences between two players that have shown clear differences during listening (in blind too). Indeed those differences were also found between the two analog signals reproduced by each player.
After all, a 14mV deviation (on vertical axis) is equivalent to a difference of about 0,12 dB! As shown in many graphs (analyzed by software programs with high discretization), the files also show differences in amplitude. Such differences, given that the files (let me repeat - several) were played by a subsequent DAC, could very well swing of 14mV (0,12db). Therefore, although your observation as some logic, in this case I do not agree with it.
With a cyclic signal my device running "empty" (sorry for bad translation) has a very low error on Y, despite its 8/12 bits of vertical resolution, which it is also found in oscilloscopes of $350,000.
I usually use a setup with noise measurement (on FFT at 1,048,576 points) of approximately -170dB, so resolution is very high...like your AP which I have also directly compared to with identical results.
For each analysis the most "appropriate" tool must be used.
Here we are talking about differences between two players that have shown clear differences during listening (in blind too). Indeed those differences were also found between the two analog signals reproduced by each player.