For interest,
Tilt control at the bottom of the page
Designing A Pocket Equalizer For Headphone Listening | HeadWize
And
http://www.edn.com/design/analog/4368935/Implement-an-audio-frequency-tilt-equalizer-filter
Regards
M. Gregg
Last edited:
I asked you a specific question which you ignored and instead throw up a couple of strawmen that would fit a great politician. Par for the course I guess.
You're not really interested in audio are you?
Where's that popcorn??
Jan
Funny thing is that when my stereo as a whole was mediocre at best I thought I had quite a few bad or defective recordings but the better (as in better resolving and more transparent with plenty of headroom) it got the fewer in number my 'bad' recordings got.
Right now I'd be hard pressed to name ANY truly bad or otherwise defective recordings in my possession.
The sole exceptions are records which are victims of the Loudness Wars.
Those actually do sound better on a crap system and at low volumes.
That may well be because the engineers famous for crushing the last bit of life out of a recording are also famous for monitoring their work at very low SPLs (<80dB). At elevator muzak levels their products sound decent enough.
Last edited:
Yes, it is nonsense. Amplifiers are the most innocent item in the playback chain, it's actually quite laughable to think some design element is going to magically transform it from the least colored device into some kind of artificial music fixer that somehow knows what every person's desires are and makes them come true. Oh, you don't like the rhythm of this song? No problem for the magic amplifier, it comes with it's own electronic drum kit!
Next up: Feng Shui for cables.
Edit: On ignoring the thread...uh, no. I happen to love this hobby quite a lot, part of that is sharing it with others. When I come across bizarre things being touted in ways that make it seem real to people who might not understand, I think it does the industry and the hobby a disservice if everyone remains apathetic as the water gets muddier and muddier with outright disinformation.
Last edited:
Last edited:
No, it's not. Damn software.
R9 is optional and basically limits the adjustment range.
Is it problematic for you too? I mean do you think they don't know soudstage or do you think they lie?
I mean, let's see some effort! *Something* to differentiate your soundstage and my story of angels.
Having just read the whole thread, I am pretty sure that the OP is trolling. He hasn't answered a single objection to his thesis and also hasn't even shown any evidence for the existence of the qualities (prat et cetera) he identifies in amplifiers.
Enviado de meu GT-I9505 usando Tapatalk
Enviado de meu GT-I9505 usando Tapatalk
cegadede
What exactly do you base your determination about my trolling on? I offered a framework that would allow designers and diyer's to establish practices that would direct their tweaks to their own taste. It is an honest effort but it isn't being received well at the moment, that's life. I knew I would get resistance and hostility for disturbing the status quo but to overlook all the trolling posts and pin the troll label on me is remarkably perverse.
For all the others who have allowed their mind to open slightly to entertain my notions, I thank you. The remainder who aren't convinced they won't learn anything new should do as rayma and DrDyna are doing; tweak and report the changes and improvements in this thread. Perhaps some kind of table which corroborates my notions will emerge. If not, it's only audio.
What exactly do you base your determination about my trolling on? I offered a framework that would allow designers and diyer's to establish practices that would direct their tweaks to their own taste. It is an honest effort but it isn't being received well at the moment, that's life. I knew I would get resistance and hostility for disturbing the status quo but to overlook all the trolling posts and pin the troll label on me is remarkably perverse.
For all the others who have allowed their mind to open slightly to entertain my notions, I thank you. The remainder who aren't convinced they won't learn anything new should do as rayma and DrDyna are doing; tweak and report the changes and improvements in this thread. Perhaps some kind of table which corroborates my notions will emerge. If not, it's only audio.
It's the same basis everyone uses, it's because this:
is probably one of the most abjectly goofball idea that's ever been presented in audio, period. First of all, anyone designing an amplifier already knows how to make it non-linear and slanted towards their taste if they wanted to, but none do...because very simply, that's not an amplifier's job.
If you want to build an effects box, that's a more realistic goal, but if the original goal of this thread was to try and pin down the meaning of some wishy-washy terms, then translate them into circuit changes which can be adopted into an amplifier, then your entire presentation is this:
Which is balls-out the most whackoloon idea most people will ever be subjected to.
Don't confuse my humoring the idea to lull people into admitting things with genuine cooperation, I find the whole idea abhorrent. If I ever actually did a modification that gave me one special amplifier that was broken compared to any of my others, it would only be so that I could take a video of me throwing it into my burn barrel afterwords and setting it on fire.
DrDyna
Wanting an amplifier that excels at reproducing audio does not make it an effects box. I had stated more than once that we are talking tweaks making subtle changes directed at three postulates of music which everyone recognizes. You have characterized this as slutting up a nun for an evening of fun. Fine, I look forward to the success of your mods.
Wanting an amplifier that excels at reproducing audio does not make it an effects box. I had stated more than once that we are talking tweaks making subtle changes directed at three postulates of music which everyone recognizes. You have characterized this as slutting up a nun for an evening of fun. Fine, I look forward to the success of your mods.
Everyone is a big word!
I for one have absolutely no idea what two of the three mean with regards to amps or any other part of the replay chain and the third is only tenuously at best connected to amplifiers since the influence on that 'postulate' by every other part of the replay system, including the recording/mixing itself swamps the amps unless the 'amp' in question is a particularly poor example of its breed or simply broken.
You have to make up your mind here. Either you take a conventional engineering approach where the result is an amplifier with no "sound," or you make an amp that has a "sound" and what you have is an effects box. You can claim that it isn't, but you can also claim that liquid water isn't wet.
Just curious- have you ever actually designed an amplifier?
Here's a suggestion - there's a very simple (single chip) 10+10W stereo chipamp on my blog. You could build it first without the ceramics for decoupling on the supplies (they're not in the manufacturer's suggested schematic) then have a listen. Then if when you add the 30 or so SMT decouplers you don't hear any clearer HF we'll know there's no need to proceed any futher 🙂
I just said it in my previous post. Please, read it again.
If you have a problem understanding any part of it, please tell me which part and I'll be happy to clarify it for you.
Enviado de meu GT-I9505 usando Tapatalk
Charles Darwin
The recorded music is represented by the signal, that signal can be complex and in my opinion it is poorly emulated by the steady square waves we use for confidence in our testing. The three postulates suggested should adequately describe all the sonic characteristics of a reproduced sound to just about everyone. How many offered an alternate set that was better? The majority of the members in this thread don't believe the music being represented is complex or hard to duplicate because it is low bandwidth. They don't seem to think the varying levels delivered at that low bandwidth multiplies the difficulty much, I think it does. Member jcx gave a compelling argument dispelling any notion of PRaT being a problem with an amplifier that isn't broken because the processing speed of most circuits are many times faster than a musical pattern but if we view the processing speed of that signal as a curve, I see the potential for musical accents being distorted in the delivery of their timing. I don't have the equipment or the expertise to measure the considerations above but I can imagine them through my logic and convey them to others that do. So we are left with sound stage (imaging) and most members seem to agree that it will automatically be the best it can be if the amp is linear. Okay, linear under what impedance conditions, at what bandwidth and with how much higher order harmonic (even or odd)? Most reading here seem to think these things don't matter much, I think they do. I have been accused of trolling and of encouraging amp builders to build an effects box because I am willing to use my ears to guide me past measurements I am unable to take. I think this is most unjust and a disservice to any advance that might be possible in understanding how to get what we want from audio reproduction.
To all others, if you don't think the issues above matter, then save your time and energy by leaving this thread or stop posting dribble and noise.
The recorded music is represented by the signal, that signal can be complex and in my opinion it is poorly emulated by the steady square waves we use for confidence in our testing. The three postulates suggested should adequately describe all the sonic characteristics of a reproduced sound to just about everyone. How many offered an alternate set that was better? The majority of the members in this thread don't believe the music being represented is complex or hard to duplicate because it is low bandwidth. They don't seem to think the varying levels delivered at that low bandwidth multiplies the difficulty much, I think it does. Member jcx gave a compelling argument dispelling any notion of PRaT being a problem with an amplifier that isn't broken because the processing speed of most circuits are many times faster than a musical pattern but if we view the processing speed of that signal as a curve, I see the potential for musical accents being distorted in the delivery of their timing. I don't have the equipment or the expertise to measure the considerations above but I can imagine them through my logic and convey them to others that do. So we are left with sound stage (imaging) and most members seem to agree that it will automatically be the best it can be if the amp is linear. Okay, linear under what impedance conditions, at what bandwidth and with how much higher order harmonic (even or odd)? Most reading here seem to think these things don't matter much, I think they do. I have been accused of trolling and of encouraging amp builders to build an effects box because I am willing to use my ears to guide me past measurements I am unable to take. I think this is most unjust and a disservice to any advance that might be possible in understanding how to get what we want from audio reproduction.
To all others, if you don't think the issues above matter, then save your time and energy by leaving this thread or stop posting dribble and noise.
Last edited:
Yes, this is exactly the sort of thing that I was suggesting in the first place, adding an improvement to an existing design.
I'll bet DrDyna just might change his point of view if he tries something like this. My original offer is still on the table. See below:
Ok, you're obviously sincere, so I'll make you a bet. Do you have an amplifier that you use regularly,
and that you are willing and able to make some hacks in? We'll use it for a test.
If you will send me the schematic, I'll bet you that at least one circuit change can be made, still within good engineering practice,
which you can hear and feel that it is better or worse in some way. I'll ask for three chances to try. Your decision is final.
Are you game? Maybe we can have some fun here for a change. As long as you don't use hearing aids, I'm game.
Last edited:
- Status
- Not open for further replies.