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stadl

Superherø MPC
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Everything posted by stadl

  1. stadl

    Go Greta, go !!

    I think that is the important thing, and I hope it works. I know it needs to be done, I procrastinate, and wish it could be solved some other way, but I really know that just like paying taxes, saving money, checkups with the doctor/dentist, and being sun smart - Things need to be done, they will hurt or be a PITA - but it's for my own good. My lifestyle will suffer - in ways that compared to the consequences of no action are quite a fair trade - in order to accomplish important things not just for the greater good, but for my good as well in the long term.
  2. stadl

    Mobile phones and drivers

    Will try and find an interesting article from about a month ago. (Was in the local dead tree edition, so might be hard to find) Someone did a study of a bunch of injury/fatality accidents from the last year or two where 'distraction' was a significant factor, and out of about 50 accidents 4 were mobile phone related, and only 1 was related to someone illegally using their phone/texting, the other 3 were legally using hands free. Distracted by kids in the back seat were about double the phone related total. Arguing with the front seat passenger, personal grooming, reading maps, changing the radio* were all in the 3-5 category Daydreaming/thinking about work/whatever made for a crappy day was about half the cause. The study indicated that phones were not that different to many other distractions - so it seems the persecution of it is out of whack with the impact it causes (although we all seem to have stories about near misses or minor accidents caused by someone) However while some things (like emotional distraction and people) are difficult to address, phone handling is pretty easy, so I don't really have a problem with applying pressure to the things that can be practically policed - far better than wasting effort on creating unenforcable laws. * 'Infotainment systems' in modern cars are shite for ergonomics of use while driving compared to care sound systems of old. Touch screens with nil haptic feedback or points of references require your eyes to leave the road and focus on soft buttons and dynamic displays are poor. Voice recognition and steering wheel controls help a lot, but they only cover 80% of interactions - for the rest, it's pretty dangerous to consider operating the infotainment system while the car is in motion.
  3. stadl

    Post Your Latest Real Life Purchase!

    If you have content on SACD in particular which uses a 1 bit 1.5MHz DSD encoding that needs a special DAC. The good SACD players will have that DAC while the receivers, external DACS and cheaper players converted to PCM before playing back through a lower sample rate 16/24/32bit DAC (10-15 years ago, that process may have noticeably changed the content - these days, the conversion and PCM DACs sound fine) While DSD format can be passed across HDMI between the player and receiver, many receivers lack the software/hardware to decode the DSD content so that would be a case for needing the analogue inputs. Thankfully my receiver can decode the formats through HDMI so all is good While SACD is a virtually a dead format for new content, I have a few old favourites - Yes I have Floyd's DSOTM but a particular favourite, is a recording of Bach recorded in a German cathedral that has 4 networked pipe organs - recorded in 4.0 as one organ per channel (they even give you the cathedral floor plan in case you want to rearrange your speakers)
  4. stadl

    Post Your Latest Real Life Purchase!

    Never had a HTPC, never will. I have been using computers daily for over 35 years (25 years as a professional engineer) still use computers for some of my hobbies. Music and movies need appliances and no software updates, patches, security concerns, any device that won't let me enjoy media without first applying updates is an anaethema I do have an nvidia shield for netflix youtube etc and barely tolerate that it wants to update every few months (but nearly ditched it in the first week when it wanted to download updates twice) I know I sound like a grumpy bastard, but I have grown to a love-hate relationship with tech. I could happily live in a remote shed and spend my days building things with my hands - provided there was 100M+ fibre-to-the-shed and a Hifi/HT system with a big-arse screen #retirementplans.
  5. stadl

    Post Your Latest Real Life Purchase!

    For the work/headphones use case, I'm not willing to commit any more money, even if I know it will sound better. In the HT environment... the quality improvement would be nice, but I'm not ripping all the content, so it will still be coming off optical media (SACD/DVD-A/BD/CD). A DAC would also only be usable for stereo, and quite a bit of my favourite audio content is 4.0/5.0/5.1. and my new receiver doesn't have 5.1 analogue inputs only stereo. Previously I had a pre-HDMI NAD receiver and used the DACs built into the Oppo BDP95. Last year the NAD died and was unable to be repaired soI got an Anthem MRX520 While it added lots of features (HD formats, ARC, better bass management), it's one limitation for me was no 5.1 analogue input and I was worried the internal DACS would not compete with the older but very nice DACs '95 - but whatever they are (Anthem doesn't state a part only 'Premium 32 bit 768kHz') deliver a beautiful sound. If I decide to start streaming and/or digital storage play back (other than in the car), my plan would have been HDMI to the HT Rx, but your post has made me think that a USB DAC could be an alternative option - however no plans at this stage to remove optical media.
  6. stadl

    Post Your Latest Real Life Purchase!

    PC based audio is not really a thing for me any more. These days it's convenient background buzz to cover the airconditioner at work etc. It's about as lo-fi as car hi-fi and the tunes are more important than the quality when it's just about distraction. I mostly listen to audio from optical media, and use either the player DACs (for the headphones at work) or the receiver DACs (for the Music/HT system at home)
  7. stadl

    Post Your Latest Real Life Purchase!

    Gawd no, don't get me interested in audio gear again, I can't afford it. Thankfully all of my audio gear at home and work is currently keeping me happy - The ATH-W5000 + M-Stage combo at work has been going solid for 8 years now. The last month has been crazy with more power tools, 4WD gear, and even a new TV - the bank balance is melted so no pennies left for audio gear - but doing my little bit for keeping the economy moving .
  8. stadl

    Anyone seen Cybes lately ?

    Hey mate, good to hear from you again, and best wishes with working things through.
  9. stadl

    Post Your Latest Real Life Purchase!

    4WD goodies galore over the last month. 2019 Mitsubishi Pajero Sport in a stylish dark blue (and some nice features like 360 degree camera system and heated seats.... mmmm warm bum). Recovery gear (straps, shackles, maxtrax, shovel, safety gear) New compressor 120AH AGM battery, box, and Redarc DC-DC Charger 12V oven (because pies, pasties, sausage rolls etc when it's cold out camping are awesome) Tools (because.... excuse to buy tools) Cables, fuses, connectors etc, to wire up the second battery system, and fit my radio. Coming weekends will need to be dry enough to get the cabling installed - Need to build a few mounting brackets, so that was an excuse to buy a small vice-mounted pan-brake folder - more tools! Then (off) road trip!
  10. It can be for any, but I'd be more likely to have it for dinner. Also if you think baked beans & melted cheese is good. Try it with picked jalapenos added - Yum.
  11. stadl

    Anyone know much about power conditioners?

    Yes, the earth/ground is common to both the input and output of the filter. Remember at this stage, it's all still AC, so you have active, neutral and earth. After going through the filter, you still have active, neutral and earth, with 230V AC RMS between active and neutral - neither is connected to earth. But the filter will reduce noise between active<->earth and noise across neutral<->earth What this means, is that if you have an appliance that is never never connected to the mains wiring earth, these filters won't help as much - there is a small amount of filtering across active<->neutral. An earthed appliance does not just mean an appliance with a metal case connected to earth. The protective earth may be present in an internal chassis or PCB - so long as an earth is present, these filters will offer their designed protection. But the give away is that if there is no earth cable on the mains lead (it's a 2 pin/2 wire lead) then there must be no protective earth used in the circuit - which is quite safe for a double insulated device - and in that case, introducing an earth to the device would be dangerous. But using a earthed filter and not connecting the earth would be ok. Reminder, this is still working with dangerous voltages, and if you are not sure of what you are doing and your assembly skills, don't try this.
  12. stadl

    Anyone know much about power conditioners?

    It's unlikely it would have something like that in it. Budget devices are not known for having much filtering, and if they do, it is more likely a couple of extra components on the PCB rather than an off the shelf module like that. At 6A, it's good for about 1300W (at Australian Voltage) - more than enough for a TV and even a few home theatre devices except maybe a honking great A or AB class surround amplifier - and if you have one of those you probably aren't using a budget DSE TV :) If the device is double insulated (no earthed chassis) then best not to change the earth design. If it is using a figure-8 power lead, or a power lead without an earth pin, then forget using one of those filters, as they work by filtering common mode (line to ground) noise. If you have no ground on the power to the device, then there is no way for a line-ground noise signal to be the issue that this can fix. But if the device has a earth pin, and it's connected to some part of the PSU electronics - it may help, but no guarantees.
  13. stadl

    Anyone know much about power conditioners?

    They should cope if it was a small brownout. If it is switching noise then it may still crack the shits because the cheap PSU would not regulate well and the switching noise gets through onto the digital circuit boards that are expecting nice constant DC. I would strongly discourage changing capacitors in switching PSUs unless you know what you are doing. The old upgrade the caps fix is fine in linear power supplies where the capacitors are used to smooth the power. In that case it only holds the voltage through the fully rectified sinewave. Most of the time, the larger cap just means instead of going from 100% down to say 30% each cycle, it goes from 100% to 60% so it has more reserve capacity, and also because of the drop-off rate, the output voltage ripple is much lower. Under that upgrade, the capacitor change doesn't materially change the circuit design, other than slightly increasing the surge current into the capacitor (through the transformer and rectifier) for the first half sine-wave after power is applied. Switching power supplies are more complex, and their frequency, stability and efficiency can all be linked to the capacitance and inductance of parts of the circuit. Upset the efficiency and it may not operate within the thermal specification and could overheat leading to a bad day. In many designs it might be safe to upgrade the final stage smoothing capacitors. but other capacitors that are part of the switchmode circuit, much less safe - what design is it, and what is safe - hard to tell, so I'd be for not changing them. If it is an external PSU brick, then you could build a smoothing capacity circuit (electrolytic in parallel across the connection from the PSU to the device), but if it has an external PSU, you are probably better just trying to find a replacement from another device for testing - unless it is some odd-ball voltage or connector. DANGER WARNING ******** 240V construction!!! Do not consider unless you know about safe construction of 240V wiring ******** If it was me, I would consider building a budget 240V mains EMI filter to put between the cheap device and the power point and hope that cleans up the power enought for the shitty PSU Whack one of these in a a box with a GPO outlet or IEC Female panel mount, and you have an in-line filter. https://www.jaycar.com.au/240v-ac-emi-filter/p/MS4001 or https://www.jaycar.com.au/iec-emi-power-line-filter-6-amp/p/MS4003 I have a similar one for my HT system, but the filter I bought cost about $80. Disclosure: EMI filters exhibit a small amount of earth leakage by design - if you use too many of them , or a very sketchy safety switch, they can trip it - but these small ones are fine.
  14. stadl

    Anyone know much about power conditioners?

    It's an interesting thought on the power systems these days. A brown-out/power sag, is usually observed as an under-voltage event - either a straight voltage drop caused by power factor issues, or generator variances or a temporary capacity drop due to overload. If you exceed the capacity of a power source, the terminal voltage starts dropping. In days gone bye, many appliances were voltage sensitive, so when the circuit got overloaded, and supply voltage started dropping, some of the appliances would switch off, and thus you effectively have some load shedding that then addresses the overload Modern switch mode variable frequency and voltage PSUs will happily continue to generate load. As the voltage goes down, they just draw more current to keep the same power drain (watts) - so no serendipitous load shedding happens. Probably not that common on the mains, but certainly very easy to have happen with battery systems. e.g. a DC-DC converter plugged in to a car battery may happily suck the 12V battery to 3V or lower while delivering the output voltage to the device if it doesn't have low voltage cut-out on the input that would prevent the rechargeable battery being depleted to to the point it can't be recharged.
  15. stadl

    Anyone know much about power conditioners?

    When you say 'drops out' is it 1. The TV controller freak out/crash (conducted/mains noise) 2. The tuner that stops receiving signal (likely TV RF interference, although it could be getting in through the mains) 3. The TV powers off then on (brownout) - if so the wiring/switchboard in your house might be under specification if a local appliance is causing this. Mains Power conditioner can be an interesting term. There are levels of conditioning. Many are just analogue filter circuits that clean up the mains to remove induced/conducted noise from switching, motors or data appliances - let the 50Hz through, but stop the higher frequency junk and cost from a few dollars to a few hundred dollars and price should reflect performance (although your need may not justify top performance). A double conversion conditioner (not cheap options) will also correct voltage and frequency variations. This is all separate from surge/lightning protection filters which get rid of dangerous spikes - and of course many power conditioners include those, as they start with a $1 part but surge protection bits are usually self sacrificing, while filtering is continuous and non destructive. None of those conditioner devices address a brown-out where there is loss of power. If it is RF interference, then you will need a filter between the antenna and the TV to try and block the interference. Switching noise will be tough, but might be improved by a bandpass filter that reduces the noise outside the TV bands and in theory should improves performance within that band - but results may vary. A mats-head amp may also help if you are in a weak TV signal area, and by the time the signal from the antenna gets to the TV is is close to the noise floor - having a stronger TV signal will improve the TV's ability to decode it) If it was a specific and persistent interference from an appliance you would get a notch filter to take out that specific signal - but it doesn't sound like that. A UPS will address brownouts of course, and many UPSs include some power conditioning capability as part of their design, and they can be applied in a number of ways - to condition the noisy mains - to clean up the inverter waveform when running (either continuously in a double conversion, or for line-interactive part)
  16. stadl

    My mother died

    Sorry to hear that mate. Thinking of you and your family.
  17. Bar WiFi in a camp ground in Africa where a couple of dozen people were sharing a single 2G GPRS connection (about 64k) But hey, it was free at a camp ground charging about $5US per night - at a time when most accommodation in Australia would charge you $20/night extra for basic internet. And that was the month that my ISP f**ked up their webmail logon screen so that it included a 1MB+ image scaled down to thumbnail size, instead of a nice 10kB image - At least at that time they had a lightweight webpage option - I had a nice discussion with them that webmail is not just for people at home on broadband who don't want to run a mail app, and travelers in distant places need a low bandwidth option. But all was ok because I could still let my S60 symbian phone use pop mail through
  18. stadl

    Problems with the 737MAX ?

    According to google, Victorville is a disused USAF base that is now used a a logistics airport, with a aircraft storage lot (and a car storage lot), for mothballed aircraft and standby fleets. Doesn't appear to be a boneyard as much as a parking lot for ex-fleets aircraft - I don't expect they do much cannibalising there. Probably quite handy as a medium term parking place - can't have them filling up valuable real estate at major/regional airports.
  19. stadl

    Terror attack in NZ

    While he is a homicidal person expressing extreme racial hatred, I'd also call it terrorism. He may not be a member of a 'terrorist organisation' or even a 'lone wolf' inspired by one of them. He had a manifesto (not interested in reading it, or about it), as a political message that needed to be expressed through killing. He sent it to politicians and media outlets, that's pretty clearly terrorism in my mind. I get disappointed that the 'Terrorism' also gets thrown around a lot for fringe issues, acts of minor public nuisance, boycots and rallies, it gets belittled and sometimes even passed off as 'that T word' , Such cases are incomparable with this event.
  20. stadl

    just had a cool thought

    I remember reading 5-10 years ago that Rolls Royce had implemented a GPS/mapping aware cruise control and throttle system to assist with driving through the alps etc. It's intent was to know about upcoming hills (up or down) to ensure the right gear was selected early and allow it to smoothly maintain speed - you can't have a rolls lurch as you downshift to get more torque as you start climbing a hill of course.
  21. stadl

    Trust issues not helping me move on.

    Mate, that's a pretty bad run of luck with relationships, and hope it helped to write about it. I'm probably the last person to give relationship advice, but I would say that there's no fixed answers, and you have be comfortable with your choices, so if something is scaring the shit out of you, it's not something you have to force yourself to do. You say 'waiting for it to go pear shaped' is unfair to you and her. I imagine it's no fairer for either of you if you move in together and you're not ready for it. Relationships shouldn't have a script unless you both want it - Its up to you and her if there's any set milestones that should happen, and if there is a schedule.
  22. stadl

    Happy Invasion Day

    How about then instead of celebrating the date the constitution came in to effect, we celebrate the date it was passed into law. July 9th. Maybe not the best weather for BBQs and cricket, but good time of the year for a lamb roast!
  23. stadl

    Coffee... Bacon... COFFEE BACON!

    The future is here now! But from the recipe that sounds awesome - I prefer the more savoury ham and bacon to the sweet/honey styles, so I'm assuming the coffee would be good like that. Although I'm not sure I have the confidence to try making it myself, without a smoker - it's likely i'd under do it, or dry it out.
  24. stadl

    Post Your Latest Real Life Purchase!

    2008 Lotus Elise SC - it has the Toyota 2ZZ engine with lotus factory supercharger integrated into the intake manifold.
  25. stadl

    Post Your Latest Real Life Purchase!

    Really not worried about the economy dropping a little, the car was already very cheap on fuel for a fun car. Performance wise I'm happy if it's no improvement, and it's got the same air-path as the original, just inside the side intake vent (mid-mount engine), so bonnet/fan setup wouldn't change it. With the original snorkel fitted to the old filter box, the original probably was very effective, but the mounting structure meant that it got beaten up every-time you needed to change the filter, and post factor the seal between the snorkel and the filter box was always iffy, so the long term practicality of the snorkel wasn't great. Many people elected to remove it for simplicity and to make changing the filter easier. I'll trust that SSC did their design well enough that it's at worst performance neutral.
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