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Am noise filter - Car air filter problems.

Am Noise Filter

am noise filter

    noise filter
  • Noise reduction is the process of removing noise from a signal. Noise reduction techniques are conceptually very similar regardless of the signal being processed, however a priori knowledge of the characteristics of an expected signal can mean the implementations of these techniques vary greatly

  • (Noise Filtering) Cleaning the signal (AC) from any interference.

am noise filter - Advanced Digital

Advanced Digital Signal Processing and Noise Reduction

Advanced Digital Signal Processing and Noise Reduction

Digital signal processing plays a central role in the development of modern communication and information processing systems. The theory and application of signal processing is concerned with the identification, modelling and utilisation of patterns and structures in a signal process. The observation signals are often distorted, incomplete and noisy and therefore noise reduction, the removal of channel distortion, and replacement of lost samples are important parts of a signal processing system.
The fourth edition of Advanced Digital Signal Processing and Noise Reduction updates and extends the chapters in the previous edition and includes two new chapters on MIMO systems, Correlation and Eigen analysis and independent component analysis. The wide range of topics covered in this book include Wiener filters, echo cancellation, channel equalisation, spectral estimation, detection and removal of impulsive and transient noise, interpolation of missing data segments, speech enhancement and noise/interference in mobile communication environments. This book provides a coherent and structured presentation of the theory and applications of statistical signal processing and noise reduction methods.
Two new chapters on MIMO systems, correlation and Eigen analysis and independent component analysis
Comprehensive coverage of advanced digital signal processing and noise reduction methods for communication and information processing systems
Examples and applications in signal and information extraction from noisy data
Comprehensive but accessible coverage of signal processing theory including probability models, Bayesian inference, hidden Markov models, adaptive filters and Linear prediction models
Advanced Digital Signal Processing and Noise Reduction is an invaluable text for postgraduates, senior undergraduates and researchers in the fields of digital signal processing, telecommunications and statistical data analysis. It will also be of interest to professional engineers in telecommunications and audio and signal processing industries and network planners and implementers in mobile and wireless communication communities.

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Marantz 2130 Tuner

Marantz 2130 Tuner

This is one of the finest FM tuners I have ever had the pleasure of using; easily on a par with the best from Macintosh, Sansui and others I've owned. Produced during the late 1970's, the 2130 was the penultimate result of a specifications and fidelity war in the consumer tuner and receiver market. Marantz pretty much pulled out all the stops for this one, and you can hear it if you have a good FM station to listen to. Personally, I pipe either a CD changer or Sirius satellite radio down some 75 ohm coax and have it hooked into every FM receiver in my home; keeps me from having to listen to the farm report and the other things my community (apparently) wants the local FM station to play. The compression on satellite radio doesn't result in extremely high fidelity, but if the choice has to be tolerable music at moderate fidelity, and high fidelity dreck... I'll take the moderate fidelity every time. At least I can count on the 2130 getting the best reproduction of the audio I have available to me. :)

The oscilloscope on the left can display tuning (center and strength at the same time), multipath, and audio. In audio mode, the left and right channels drive the horizontal and vertical signals respectively, so a mono signal draws a 45 degree line and stereo signals draw various elliptical patterns. It's quite informative, you can see how much separation there is at any one moment, and any noise comes through as fuzz on the trace. For multipath, the scope makes antenna adjustment (beam FM antennas) 100% accurate, you can tell instantly when you've got the antenna pointed in the optimum direction. The scope also has external inputs so you can monitor audio from the rest of your stereo system. On the front, there are horizontal and vertical positioning controls and an external level adjust. On the rear deck are focus and brightness adjustments; I've never had to touch them.

Aside from the scope and its controls, the tuner provides controls for two IF bandwidths, switchable AFC ("Quartz Lock"), mono/stereo, muting level and output level, 400 Hz calibration tone for Dolby recording, high blend (multiplex noise filter) and switchable Dolby demodulation (the latter being useless to most people now, as no station uses this anymore... but I just happen to have a low-power ultra-hifi Dolby FM transmitter... :-)

The AFC switches off when you have your hand on the dial, so you can tune normally. It feels silky smooth, and the tuner's ability to separate stations makes tuning quite crisp when you're on-station. As soon as you take your fingers off the knob, the AFC locks back in (if you have it on, of course) and the scope shows the station perfectly centered. The lock LED shows that the AFC is operating.

The AM side of the tuner is pretty good, but not up to the standards of the FM side. Too bad; it's not all that difficult to make a good AM tuner, but very few manufacturers ever paid proper attention to the problem in a consumer audio context. One notable exception to that being Sanyo. Not that it matters anymore; quality AM broadcasting, sad to say, is dying. The airwaves are filled with talking heads. Babbling heads. Something like that.

From time to time, you can find 2130 tuners for sale on EBay. My advice is, if you like FM listening, grab one. They're incredibly underpriced. They generally go for $500 to $750, depending on condition; but you can't buy a comparably performing tuner today for under five grand, and even then, you won't get some of the amenities you get with one of these. No kidding. If you like FM, this baby is the brass ring.

Test shots indoor, low-light, art filter: B&W Grainy

Test shots indoor, low-light, art filter: B&W Grainy

Shot in JPEG. Adobe camera RAW support for E-P3 just came out, but I haven't tried it, yet.

The E-P3 with 12mm f/2 lens performs well in low light—BUT, at ISO1600, I noticed much loss in details the shadow areas, not to mention presence ugly color noise. Now, that was with default settings—noise reduction ON, and "Noise Filter" standard.

For this image, I had Noise Filter off, but forgot to turn off Noise Reduction. By the way, the default menu system hides the user from tweaking with noise settings. I had to look at the instruction booklet to figure out how to turn off NR.

I am pretty impressed with the B&W grainy filter. In low-light, it does a great job, processing the images that actually look like they were shot with something like Ilford Delta 3200 film. IMO, the in-camera processor for grainy B&W does better than film simulation from Silver Efex (v1,at least).

There are (2) types of grainy B&W—(I) high contrast, (II) lower contrast (I think). I don't remember which one this image is, but I think it's (II).

am noise filter

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Green Sand Water Filter

green sand water filter

    water filter
  • a filter to remove impurities from the water supply

  • A water filter removes impurities from water by means of a fine physical barrier, a chemical process or a biological process. Filters cleanse water to various extents for irrigation, drinking water, aquariums, and swimming pools.

  • (Water Filters) A water filter is required to remove parasite contamination in big city municipal water supplies, and growing concerns about well water contamination in rural areas. It does away with the inconvenience and expense of purchasing bottled water.

    green sand
  • A greenish kind of sandstone, often loosely consolidated

  • Moist sand that is bonded by a mixture that contains silica, bentonite clay, carbonaceous material, and water.

  • A molding sand that has been tempered with water and is employed for casting when still in the damp condition. Not specific to one material as the technique is used to produce aluminum castings, gray iron castings, steel castings, bronze castings, brass castings and ductile iron castings.

  • Moist clay-bonded molding sand.

green sand water filter - New Hight

New Hight Quality Water Wonders 18" Green Bacopa Plant

New Hight Quality Water Wonders 18" Green Bacopa Plant

Tetra - TETRA WW 18" GREEN BACOPA PLT The graceful beauty of underwater plants adds the finishing touch to any aquarium WaterWonders Decorative Plants are specially designed for ease of installation and long lasting beauty. Each WaterWonders Plant includes a plastic anchor base that can be buried in the gravel to secure the plant The Easy Connect feature allows the plants to be removed from the plastic anchor and connected to an assortment of products including Decorative Plant Base Ornaments that look like driftwood and coral. Size - 1inches

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A Green 'Art Legacy' Flickr Gun

A Green 'Art Legacy' Flickr Gun

A Flickr Classique... Hao Tuamotu is a 100 miles long swimming pool... On the horizon the South Pacific is wavy, raging furiously, and is full of Sharks. But inside you are safe! In this green pool you will be far from the large squales,... Ahhh but where is the Casino?
There is none with only 77 inhabitants!

No color correct as usual in my work. Yes it's a leaf floating on water :) enjoy!

How did I manage to get these colors?
1/ And in the begining there was Light.... the tropical light is way better than in Paris or New York from 6500 we go up to 10 000 Kelvins in Tahiti.
2/ When you move out in the Tuamotu Archipelago there is even more light because of three factors - no mountain to eat the light - the reflection at the surface of the lagoon - and last but not least, the white sand refracts the sun back from under. So you can get an incredible 12000 Kelvins of light temp on an attol.
3/ I always use a german tripod even with water at the chest
4/ I set my plastic camera to a very dynamic and contrasty Fujichrome setting
5/ These shots are white balanced manually.
6/ I have a very good Pola filter.

Voila..... ciao.... see you around!

Typical Hawaiian Sunset

Typical Hawaiian Sunset

So I've been getting kind of bored of processing all these photos from Cali and I have a ton of them left. I'm all about changing it up and since I haven't done a beach sunset vertorama in literally months, I felt it was time to hit that up. The weather looked just right for a stunning light show but I had no idea the treat I was in for. This was taken on the north shore at Waimea Beach. Used f22 and an ND8 filter on the lower half to get the fluid water movement. And used f11 with out the ND8 filter on sky to get all my exposures with as little cloud movement as possible.

All digital blending was used in this photo. Sky was blended from 4 exposures and the sand / water is a blend of 5 exposures. Curves, contrast, saturation, highlight / dodge, unsharp mask, noise ninja.

green sand water filter

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Oil Filter Cross Section

oil filter cross section

    cross section
  • a sample meant to be representative of a whole population

  • Make a cross section of (something)

  • a section created by a plane cutting a solid perpendicular to its longest axis

  • cross-section(a): representing a plane made by cutting across something at right angles to its length; "cross-section views of the neck"

    oil filter
  • An oil filter is a filter to remove contaminants from engine oil, transmission oil, lubricating oil, or hydraulic oil. Oil filters are used in many different types of hydraulic machinery.

  • A cartridge-filled canister placed in an engines lubricating system to strain dirt and abrasive materials out of the oil.

  • a filter that removes impurities from the oil used to lubricate an internal-combustion engine

Cross Section of Hail ( Rings ) .... Laura

Cross Section of Hail ( Rings ) .... Laura

Cross sections of hailstones often reveal layers, much like those of an onion. These layers are caused by the different rates of accumulation and freezing of supercooled water, as the hailstone forms. When there is a great deal of supercooled liquid in the air through which the hailstone falls, water accumulates faster than it can freeze, so a coat of liquid forms. This becomes a layer of clear ice when it does freeze. When a hailstone falls through air with a smaller amount of liquid, the liquid freezes on contact with the hailstone, forming small air bubbles in the opaque layers. The more supercooled water a hailstone makes contact with, the larger and heavier the stone is likely to become. When the hailstone becomes so heavy that the updraft can no longer support it, it falls from the sky.

A cross section of the Hail !!!!
The majority of the hail that hit our house and truck was almost the size of a tennis ball.
I have never seen anything like it before in my life !!
It was AWESOME !!

World Press Photo visits Wellington

World Press Photo visits Wellington

Real & harrowing photographs adorn the walls. It is APPAULING to see what humans are still doing to each other. This exhibition show realness you rarely experience through traditional press. Realisation of how little is actually filtered through to us.

I have little faith in our press, however this exhibition seemed to show a cross section of views and perspectives. So sad that repairing from natural tragedy & poverty remains second to oil source security.

oil filter cross section

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