Do not bother arguing with user yym. If you go and check this individual's forum profile, the user technical contribution to this forum is zero. All the user does is bashing the forum owner. Interestingly enough, that started from Batteriser. Move on and do not feed the troll.
Debating with religious people is like debating with audiophools as Dave so neatly explained in one of the videos at the top of this thread. It will go nowhere.
some who say überstupid things like "with digital, all that matters are the headphones."
There's also one with audiophile capacitors AND an external audiophile op-amp for $16. Really go to town!
some who say überstupid things like "with digital, all that matters are the headphones."
Ironically, not being a car guy, I would get the same use from the Fiat 500 and the Veyron, but not everyone is like me; understanding that last clause is a major part of growing up.
some who say überstupid things like "with digital, all that matters are the headphones."I don't believe it is excessively stupid at all.
The weakest link in any sound system is the electro-acoustic transducer - a.k.a. the speakers (whatever the size). Back in the day, it was a given. The priority was you spend as much as you can on getting quality speakers, then work the rest of your system.
Well, since you insist here's why you need to care about more than the headphones (note that I didn't say headphones are unimportant, I said that people who think only headphones are important "because digital" are überidiots).
With digital, fidelity is pretty much ensured until you get into the linear signal processing
I've only watched the first episode but I have to comment on the engineers and deadlines reference. That is so me. I can procrastinate until the cows come home, Bob's my uncle or being trapped as a young player, and then finish a sprint to the deadline and sort of get the product out. Have been doing that since attending university in 1980 really.
With digital, fidelity is pretty much ensured until you get into the linear signal processing
Well not really, here you can see what compression can do to the poor audio signal:
With digital, fidelity is pretty much ensured until you get into the linear signal processing
Well not really, here you can see what compression can do to the poor audio signal:
b) How much of that is actually audible?
http://sitacuisses.blogspot.com/2016/09/the-problem-with-wireless-earbuds-for.html
Most relevant for that DAC/Amp IC would be problem classes 3 and 4.
Most relevant for that DAC/Amp IC would be problem classes 3 and 4.
b) How much of that is actually audible?
Somebody needs to watch this a few times: https://xiph.org/video/vid2.shtml
http://sitacuisses.blogspot.com/2016/09/the-problem-with-wireless-earbuds-for.html
Most relevant for that DAC/Amp IC would be problem classes 3 and 4.
The page doesn't exactly start off well...
If you don't understand why the power supply matters, consider the Rint in the picture below. That's 1/3 of what matters, but it's the most obvious problem. Louder sound raises i, which leads to a drop in voltage Vin which leads to amplitude compression
If you don't understand why the power supply matters, consider the Rint in the picture below. That's 1/3 of what matters, but it's the most obvious problem. Louder sound raises i, which leads to a drop in voltage Vin which leads to amplitude compressionBuzz.... wrong! You are forgetting that the amplifier's control loop takes care of this. Google for PSRR. Since most current is supplied at the really low frequencies the PSRR doesn't even have to be really good to deal with this. Ofcourse this assumes the amplifier has been designed with enough headroom in the power supply (think 100Hz or 120Hz ripple on the capacitors!) not to clip the signal but that goes without saying. This also debunks your whole theory about iPhones. Sure they can supply 96dB but don't ramp the volume up so far they clip. IMHO you should read more real theory!
If you don't understand why the power supply matters, consider the Rint in the picture below. That's 1/3 of what matters, but it's the most obvious problem. Louder sound raises i, which leads to a drop in voltage Vin which leads to amplitude compressionBuzz.... wrong! You are forgetting that the amplifier's control loop takes care of this. Google for PSRR. Since most current is supplied at the really low frequencies the PSRR doesn't even have to be really good to deal with this. Ofcourse this assumes the amplifier has been designed with enough headroom in the power supply (think 100Hz or 120Hz ripple on the capacitors!) not to clip the signal but that goes without saying. This also debunks your whole theory about iPhones. Sure they can supply 96dB but don't ramp the volume up so far they clip. IMHO you should read more real theory!What is the nature of disagreement here? Sorry, it looks like I am missing something.
If you don't understand why the power supply matters, consider the Rint in the picture below. That's 1/3 of what matters, but it's the most obvious problem. Louder sound raises i, which leads to a drop in voltage Vin which leads to amplitude compressionBuzz.... wrong! You are forgetting that the amplifier's control loop takes care of this. Google for PSRR. Since most current is supplied at the really low frequencies the PSRR doesn't even have to be really good to deal with this. Ofcourse this assumes the amplifier has been designed with enough headroom in the power supply (think 100Hz or 120Hz ripple on the capacitors!) not to clip the signal but that goes without saying. This also debunks your whole theory about iPhones. Sure they can supply 96dB but don't ramp the volume up so far they clip. IMHO you should read more real theory!What is the nature of disagreement here? Sorry, it looks like I am missing something.josecamoessilva seems to think that a drop in the power supply leads to a drop in the output amplitude of an audio amplifier. That just doesn't happen unless the power supply voltage drops below the design limits of the amplifier.