Posts by stv014

Quote: Originally Posted by stara  headphone amp maximum says 300 ohm - 150MW.   If the spec is true, it means at least 75 mW into 600 Ω, which should be OK.

Quote: Originally Posted by miceblue    Mmk that's good to know then. I'm not sure what artifacts sound like though.   They are not supposed to be audible at 44.1 kHz with good filtering (which...

Quote: Originally Posted by jaddie  Kinda, the goal is to up the sampling frequency so the reconstruction filters don't have to be quite as severe.   The requirements on the overall filter response do not...

Having a quick look here reveals that skin effect has a depth of about 0.5 mm at 20 kHz in a copper wire, or, in other words, it becomes an issue when the diameter of the wire is at least ~1 mm. So, it is obviously not relevant to...

Quote: Originally Posted by ultrabike    However, suppose some non insignificant amount of signal all the way to 31 kHz exists. Furthermore, consider storing things at 48 kHz. In the above example for...

Quote: Originally Posted by takato14  I was planning on doing a FR with a sine sweep, two square waves at 30 and 300 Hz, and a CSD plot.    Actually, all of those (FR, square wave response, CSD) can...

What parameters of the headphones do you intend to measure exactly ? If you are using utilities from my package, I could post a detailed description of how to measure any of the following: - frequency response using MLS - frequency...

Quote: Originally Posted by Dutch-Guy    Is it better to have (for example) speakers which are 8 ohm and a receiver which is 4 ohm than it is the other way around?   Yes, if the load (speaker)...

A number of ABX test files have already been posted on this forum that allow people to find out whether they can hear any of the following: - higher than 16 bit resolution - higher than 44.1 kHz sample rate - differences between...

If the number of taps needs to be kept low, it is also possible to do the upsampling in more than one stage: first upsample by a factor of 2 (192 tap FIR filter sticking with the previous example), then upsample again using a lower...