makmeksam
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- Nov 13, 2019
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Many subjectivists argue that measurements can not capture the audio quality of an AMP or a DAC.
We can accept that there are lot of variables that come into play when measuring a device. Input level, input signal (1kHz sine/CCIF tones/SMPTE tones etc), gain/output level, load resistance are some of them. If we were to capture the distortions with respect to at least the above variables, we have to create at least a 5 dimensional plot. But that is not practical and we never do that.
Because of this limitation can there be things that we miss with measurements but subjectivists can possibly sense by listening? (Consider IMD for an instance. We mostly use two test tones to measure IMD. But real music can be much more complex. So real music may give more distortions even if the measurements of a given device are very good?) Or else can we theoretically argue that measurements can capture the audio quality of an AMP or a DAC with a very good certainty even with the limited amount of measurements that we consider?
We can accept that there are lot of variables that come into play when measuring a device. Input level, input signal (1kHz sine/CCIF tones/SMPTE tones etc), gain/output level, load resistance are some of them. If we were to capture the distortions with respect to at least the above variables, we have to create at least a 5 dimensional plot. But that is not practical and we never do that.
Because of this limitation can there be things that we miss with measurements but subjectivists can possibly sense by listening? (Consider IMD for an instance. We mostly use two test tones to measure IMD. But real music can be much more complex. So real music may give more distortions even if the measurements of a given device are very good?) Or else can we theoretically argue that measurements can capture the audio quality of an AMP or a DAC with a very good certainty even with the limited amount of measurements that we consider?