Originally posted by myself http://www.etymotic.com/images/PDF/er6info.pdf As you can see in the ER6 brochure, Etymotics Research has measured the frequency response of several noise-isolating / cancelling earphones in the market, including their own ER6. (The FR of the ER4S/P is available elsewhere, of course.) The Sony EX70, at about , actually put in the best showing behind the ER6. Owning the EX70 and Senn HD580, and through unfortunate circumstances having to listen to the EX70 most of the time, I decided to do my usual trick and use EQ to give my EX70 for free the perfect frequency response that the ER-4 / 6 strive to achieve for 0+ / 0+
Originally posted by Joe Bloggs BTW, have you noticed that you can't get the Naoki EQ plugin from winamp.com anymore?
From http://shibatch.sourceforge.net/An accurate equalizer for winamp 2. With 16383th order FIR filter, this plugin gives a lot more accurate equalization than the default winamp equalizer. With celeron 800MHz, CPU power usage is less than 10%.
Originally posted by KikeG Shibatch SuperEQ does smear transients, but I think it is not due to the FFT window width.
Originally posted by KikeG I think he smearing is due to the extremely sharp "rectangular-shaped" band-filtering performed, with a phase linear filter, which causes quite audible (in some cases) pre and post ringing.
Shibatch Super Equalizer is a graphic and parametric equalizer pluginfor winamp. This plugin uses 16383th order FIR filter with FFT algorithm.
Originally posted by Joe Bloggs IIR filters are not phase linear. And if an EQ is not phase linear no self-respecting audiophile will touch it. :diabolic:
Originally posted by Frank Klemm HQ audio (taste compensation) filter must be - LTI - minimum phase
Originally posted by Joe Bloggs I thought KikeG said that pre-ringing is not audible What about the variety you get in the brick wall filter for CD?
BTW, IIR filters are not phase linear. And if an EQ is not phase linear no self-respecting audiophile will touch it. :diabolic:
being more insensitive to phase the higher the frecuency.
being more insensitive to phase the higher the frecuency
Originally posted by daniel he's right.
Slightly ot, but how many have metal dome tweeters? Those have nasty breakup modes in the 23-27kHz region. Luckly cds have content to 22kHz. Who wants SACD?
[span style='font-size:9']edit: no, you cant hear 25kHz. But if you play that singnal through a tweeter you COULD hear IM components.[/span]
Do they introduce time smearing or have other negative influence on the audio?
Originally posted by Gecko ("Frequenzweiche" in German, couldn't find a suitable translation)
Originally posted by Gecko What about analog equpiment? Especially the filters ("Frequenzweiche" in German, couldn't find a suitable translation) in your speakers which divide the spektrum for the respective drivers. Do they introduce time smearing or have other negative influence on the audio?
Originally posted by Joe Bloggs Um, what's LTI?
Hmm... but can't you say that FIR has less phase change than IIR, so that THAT is the 'minimum phase'?
Seriously though, I guess it's a tradeoffUse IIR and trade soundstage accuracy for sharp transientsOr use FIR for vice versa
Hm, I don't think you can have a soft AD filter--you need to eliminate everything above 22kHz to avoid aliasing (or some other name, for incorrectly recorded HF emerging as LF signal) AND keep just about everything below 22kHz so as not to disappoint the discriminating listener with top-quality HF hearing. A steep AD filter is the logical result. So...
Are you sure it's not the other way around? Anyone? Just asking
Taste filtering--filtering to your taste, eg. EQ, right?
To avoid this, one must use bi-amplification.It consists in using special speakers with filters that can be bypassed, and using active filters instead, that are between the source and the amplis, like an equalizer. There is one ampli for the boomer, one for the tweeter, and they are directly plugged into them without speaker filters
to the rest: As for crossovers, there's another way to deal with the phase distortions: reposition the speakers to pre-distort the phases so that the output of the speakers finally come out effectively phase-linear
ear is quite insensitive to phase distortion, in comparison with its sensitivity to amplitude linear distortion.