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About aechmea

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    Aechmea recurvata

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    Hunter Valley
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  1. Archimago blog on MQA (guess what, he's not a fan )

    To be honest, I can't see any point in some noddy, that screwed up the CD mastering, presenting the same thing as the MQA master. Which master is the "master"; the final 1978 mix one, the one for vinyl (with limited mono bass), the CD one, the HD Tracks one, the German one, Fred's one, the 2004 compressed remaster; Oh, doesn't matter, here's one. The concept of "master" is rather problematic even before the mathematics kicks in. Indeed. Proper mastering is all that was ever needed, irrespective of the transport medium. The HDCD blue light came on because the ADC step was done using the Pacific Microsonics ADC/DAC (one of the most famous and revered devices around). I have some HDCD discs where not one of the HDCD features/processing was used, go figure. Others are marvelous. I guess that MQA is/will be the same; it all depends on the bloke twiddling the knobs.
  2. My planars are well out into the room and I have had no experience with a close-to-the-wall situation, however ... I have used, at one time, large amounts (3 full sheets of 100mm semi-rigid fibreglass) of absorption behind the speakers on the front wall. The imaging becomes very focused and pin-point accurate. However the trade-off is that the soundstage width narrows back towards the centre. These days I have some absorption; about 1/4 of what I had before and a tall strip of diffusion panels on each side of the front wall placed where part of the backwave reflects directly at the chair. The diffusion went a long way toward fixing a L vs R imbalance. My backwave is roughly directed into tube traps in the corners, so I think that there is a bit of scattering from the tubes and from the side and front walls. In general you can expect to hear from posters that you shouldn't absorb behind the planars because that "kills" the life and expansiveness that is the hallmark of planars. I don't quite buy into that, and I am happy with a bit of both absorption and diffusion. It's all a matter of preference. [Edit: Forget traditional side-wall absorption. It's not needed for planars which have a figure 8 pattern ie. nothing/nothing much out to the side.]
  3. Aussie Politics

    Yeah, but... I should have received $10 dividend, but I only got $7 because $3 was deducted as tax that I was not liable for. Anyway #1, it took less than 24hours before Bowen was back in the media saying that there would be compensation for pensioners. Methinks they miscalculated somewhat. Then one must ask the question "why take it away in the first place only to give it back?" Anyway #2, there are 600,000+ SMSFs each with say 2 members, and say 80% of them paying a pension. Then add to that the govt pension recipients (not just age pension) say half of whom have some shares. That is about 2M votes. As Humphrey would say "A courageous decision, Minister". Anyway #3, I like the idea of no tax refunds at all for anyone, anytime, anywhere; I deem them to be rebates with any excess being nonrefundable. Excellent economics, but... imagine the uproar. So why do it to pensioners.
  4. Aussie Politics

    Yes Z, that is their line. Thus far tax credits are defined as "refundable". I reckon that they are going to call them "rebates" which are not refundable. The point is that this is pre-paid tax, paid on my behalf by the company, just like employed people are paying PAYG tax instalments. However my income is such that I am not required to pay that much tax. Every other tax payer gets a cash tax refund for overpaid tax why are pensioners to be singled out? If one had a job that paid say $18000pa and tax installments were taken out, then because $18000 is below the tax free threshold then you would get all the overpaid tax installments back in cash at tax return time. The pensioners; a good target; the people least able to fight back.
  5. Aussie Politics

    Imputation credits attached to franked dividends are available to everyone, individuals, companies, partnerships, trusts, super funds, ... everyone. It is a technique to not pay tax twice on the same profit. One would think that it is just those money grabbing bloody pensioners. [For those that don't know of it, which shouldn't be anyone, here is a simplistic example ... Company makes a profit, say $100. Company pays tax say $30 Leaves $70 cash left for dividend Company pays a cash dividend to a shareholder say $7 with a $3 imputation credit for proportion of tax already paid Either shareholder pays tax at marginal rate less the $3 that has been pre-paid. Or if the shareholder is below the tax free threshold (pensioners, almost all self funded retirees and the poorest in society), they don't pay tax, and get the $3 back since it shouldn't have been taxed in the first place.] OK, so what Labor is planning is not to refund the $3. This will only affect the pensioners, self funded retirees and the poorest in society. It will not only affect the "richest" of that group but absolutely everyone who is on a pension of any sort, government or not. How they can bold-face lie about it only affecting the richest 1% (or whatever Bowen said the other night on TV) is beyond me. Also on that show Bowen was waxing on about people getting a $85k refund (a deliberate shock, gasp, horror statement). Whomever told him that needs to brush up on their arithmetic. The max tax free SMSF pension account is $1.6M. Lets assume (most extreme case) that all of that is in Aus shares (a very poor investment strategy) and that all those shares pay a fully franked dividend (but not every share dividend carries an imputed credit). Cash dividends are approx 4% at the moment. So working on those max numbers imputation credits/tax refund would be 30% of 4% of 1.6M = $19200. A fair bit short of $85k. You would need approx $12.5M in super to get that much refund, and then only in the most extreme case of a silly investment strategy. One wonders who made up this 85k number. I smell a lie. By taking this approach Labor will just force more people onto the government age pension sooner, and make those already on a govt pension that much poorer. I think that grey power may make a resurgence on this one. At the same time we see global mega companies pay no tax at all through transfer pricing tricks, accounts in the Cayman Islands et al. Hmmm. Yeah those bloody pensioners.
  6. In case anyone is interested, here is the TTDR algorithm that I have simplified from the official document. As one can see it is a statistic based on a subset of actual measurements Below is something that I wrote years ago re vinyl entries in the DR Database. There was a whole thread and the "conclusion" was that vinyl entries are not trustworthy. Neither are 24/96 entries etc. The DR software calculates 16/44 only.
  7. DEQX Owners Thread

    That's what many people do and I reckon that that would be all you want. On the other hand @almikel and his colleague built a roof high scaffold to do their measurement. That's dedication for you. There are pictures somewhere. I've only done the pseudo anechoic speaker measurements twice since the original time that Alan did it. I only did the subs once with the mic at point blank range. I helped my mate do his Quads and Velodyne DD18 outside and as far as I know that was the first and only time for him. Another friend did his in a car park (=no walls, but still had ground bounce). Do it once or twice up front to get something reasonable, then once later on after you have learnt the tricks. I don't think that anyone has a perfect measurement but they get better each time. But it doesn't need much of a gate to enable calibration down to ~300Hz Most of my working and reworking has not been with measurements per se, but with the next steps and software parameters (different XO to subs, aggressive amplitude correction v subtle, diff slopes, diff time adjustments, with and without room EQ, full range mains or not, time alignment between speakers as well as within speaker, with and without subs ........ ). You can build as many profiles as you like with filters/parameters representing all sorts of choices. 4 profiles are available and switchable in real time. Any number of other profiles can be downloaded 4 at a time. Only a minute or so, once you get the mic positioned and the PC connected and the software running. Each speaker (or driver if you are active multi-amping) has its own trace (but can be added to see the overall). But having done the first measurement and looked at the results you may want to adjust the room EQ or timing or polarity or amplitude etc, in which case you might measure again to see what effect that change had. I only EQ the bass, so having said the above, minor room layout changes wouldn't need a re-measure. Moving a sub, say from front of room to back wall or a similar substantial change would warrant a re-measure and an EQ tweak. If you are actually still trying to find the best place in the room for your subs then lots of trial and error with measures will be needed. The DEQX is not magic, in that it can't make everything perfect with the flick of a switch. The only way that you can ever reduce the number and size of bass cancellations (and peaks) is by positioning positioning positioning first. Then lop the tops off the residual peaks with EQ. Yes you can save measurements (and almost all other stuff). I had a purge 12 months or so ago and deleted a hundred? saved measurements and old/unused profiles, calibrations etc. One IT trick is to name the files representing the measurements (and filters and profiles and other parameters) consistently, reliably and repeatably when you create them, because if an item has a vague file name then its pretty hard to remember what (/why/where/when) it was at a later time. For me the gross effect of treatment is best seen as a waterfall graph. In that case I use REW software. The DEQX software doesn't do waterfalls. I haven't looked for the effect of treatment in a freq plot but I suppose that the data is there if you looked closely enough. Hmmm. Bit of an essay; hope it helps.
  8. DEQX Owners Thread

    Fair questions. I'll do my best... I suppose that you would have to ask the "disposers" why they disposed. I have had a DEQX since ~ 2007 and I think that it is great and have never been tempted to go another path. In my working life I was an IT manager and before that technical programming/design stuff with a uni mathematics background from long ago. The reason why I mention this is that software/firmware/file structures/processes et al were never an issue for me. However, I was in the deep end re DSP, Group Delay, phase, XOs, slopes, FIR and that side of it. Still no idea on that really. For the third part of the trilogy I read a text book on acoustics and taught myself the room side of things which is also mathematical. At a conceptual level it is all about maths and physics, so it could be a bit daunting I suppose. DEQX is not plug and play, so a certain amount of knowledge is better, but even if you understand nothing, the DEQX people (Alan) can do the set-up for/with you. You have to learn from that though. Whilst building a set of filters there are a large number of "knobs" that you can twiddle. Always interesting to see what such changes can achieve, or not. There is plenty of opportunity to tinker but in reality after a few tries, one just settles on the one profile that you prefer. I haven't tinkered for years. Yes, you are supposed to do speaker calibration with the best pseudo-anechoic measurement that you can manage. My speakers and subs are huge, so doing measurements, say outside, is not without a huge logistical effort. I have only ever done measurements in-room and truncated them before the first reflection. My time interval before the reflection is such that I can really only calibrate down to ~300Hz. I don't think that I am missing anything though. I promised myself to do an "outside", or similar, one day. Curious as to what any difference may be. 10 years on and I still haven't done it so what I have done is good enough for me. You can get a longer gate by a set-up using a doorway into another room so an "outside" is not strictly required. Room correction EQ is more straight forward because now you actually want to include the reflections. DEQX is a complicated box full of sophisticated software and hardware = great power and functionality, but as we know, great power needs great responsibility, so one needs to be very careful, respectful and operate with a gentle hand. It may not seem like a lot, but a dB here or there or a few milliseconds here or there makes a real audible difference. The devil is in the detail.
  9. Well done Elnido. Congrats on your new system; well, that will be how it sounds. Treatment is almost always the most effective $ that you can spend. I've gone overboard with quantities of rigid and semi rigid fibreglass in my room. Hardly a room fit for a "Vougue" pictorial but it sounds great.
  10. Fraudband and the NBN

    I am confused anxious and frustrated. I have read most of the 21 pages but a lot of the discussion is coming home to roost and I need to find out more. Yoos blokes I trust rather than the glossy brochures and advertising guff. A very brief history of my place to set the scene House on edge of largest population centre in council area (council chambers, area police command, court house, 2 x woolies, dan murphy's etc so not Hicksville). Only 3Km from the exchange (as the crow flies). Not beyond the black stump. Early naughties - dial-up only due to RCM and RIM multiplexors on the route to the exchange. After many requests, rerouted via copper = only ADSL in the street. Very low signal to noise ratio. High attenuation . But it works. 2Mbit download, 1000Gbyte/month/Telstra. Telstra look-up shows no ADSL available at my address! Town serviced with FTTN in 3rd Quarter 2016 except our street whose status went back to "being planned". Annoyance and frustration. Telstra shop knows nothing. NBN did not respond with any info. So I wait wait wait. To complete the picture there is next to no G3 mobile phone reception. "Blue tick" Telstra handsets can get half a bar. Now to today. I look at the NBN site and they say that Sky Muster is now available in the area. What? What happened to FTTN or fixed wireless? So I zoomed in on their map. The back of my property is shaded as fixed wireless, the front has no shading (=nothing). The land over the back fence is being subdivided for housing, hence the fixed wireless (where from?) Ridiculously the 1m wide easement between between council and government land over the road is marked as available NBN fibre. There has been no correspondence from Telstra or NBN re availability of NBN in any form. From the map it appears that all the existing properties at our end of the street are in the same situation. 1. What about the fixed wireless? Does it mean that I could build a tower/antenna down on the back fence and feed a cable up to the house? 2. Sky Muster. The Telstra retail shop seem baffled and can't help. Telstra doesn't seem to offer a product over SM as far as I can tell. 3. I have read that with SM you retain your old copper phone line. Does this mean that my existing ADSL will continue to operate. Maybe I continue on ADSL forever. At least it is stable despite the poor measurements. I am scared that one day someone will pull the plug on the DSLAM not realising that I exist or that my copper line is rerouted around the town and is still active. 4. Sky Muster plans seem to be limited to 60GB (from 7am to midnight). This is like going back 10 years. There are 3 adult users who use the internet all day every day (well sort of). Are there any bigger SM plans that I haven't found? 5. How can you find anyone to talk to that actually knows something. I have been waiting 20 years for real internet since I left work (corporate IT computer centre). Looks as though it will never happen. Sorry to bore you with this but I am ......off. Any advice/clues that you can give is appreciated.
  11. MG30.7 at about $40K are looking pretty cheap.
  12. Whoever drew the first "staircase" representation should be shot. It has caused more harm than good.
  13. Hi from Newcastle

    Welcome Mark. Plenty of Novocastrians here and dinosaurs too.
  14. Changing the conditions of 457 visas

    There is a snowflakes chance in hell of the govm increasing uni funding ==> fewer places, less staff, can't function, sold to private enterprise. There, fixed that expenditure problem.