「stereo」を含む日記 RSS

はてなキーワード: stereoとは

2019-06-11

[]TWS

True Wireless Stereoの略。

イヤホン同士をケーブルで繋ぐわけではない、AirPodsのような完全ワイヤレスの左右分離型イヤホンを指す。

2018-02-03

雅楽滅びろ

雅楽/邦楽プレイヤーって「新しいこと」をしようとするとすぐクラシックとかポップスと融合したがる

こいつらバカじゃねえのって思ってしま

古典的雅楽の良さは音階ではなくアンビエンスとモード音楽を作り上げるところなのに

演奏してる人たちがバカからすぐ音階音楽に融合したがる

モードジャズミニマルテクノアンビエント、ダブとかの方が合うだろうし

そもそもそんなことやらずに新しい古典雅楽を作ればよろしい

海外では古典的民族音楽を再解釈や再評価した渋い音楽がたくさんある

日本・・・残念!!

多分(今の)日本の人にはそういうセンスがないんだろう

はー、雅楽滅びればいいのに

海外の様子

Heilung | LIFA - Krigsgaldr

https://www.youtube.com/watch?v=QRg_8NNPTD8

鉄器バイキング時代北欧民族音楽ベースにしたフォークパフォーマンス集団

Wardruna feat. AURORA - Helvegen +multi-language Lyrics/Subtitles (live at TraenaFestival2017) HD

https://www.youtube.com/watch?v=YWE9LDIuA0M

ヴァイキング時代から続くノルウェーフォークを発展させたダークフォーク/アンビエントグループ

ヴァイキング時代欧州フォークは、コレ以外にものすごくたくさんある

Wolcensmen - The Fyre-Bough

https://www.youtube.com/watch?v=ob8Mv84N4bU

スコットランドアイルランド周辺の異教徒フォークベースにした音楽

Phurpa – Boiler Room In Stereo

https://www.youtube.com/watch?v=VK5uG2fN6HE

チベット音楽古典的楽器を使ってよりディープ音楽に作り上げたロシアグループ

日本ってほんとうの意味フォークってほぼないね

演歌インチキだし

古典雅楽聞いてるとすごくしびれるし、この辺より断然すごいと思うんだけど、才能ある作曲家がいないのが本当に残念!!!!

2017-09-29

JustSystemsの感動かんたん!フォトムービー8に結婚式台無しにされた

感動かんたん!フォトムービー8というソフトウェアがある。新婦エンジニアでもなんでもないので、できるだけ簡単ソフトを選んだ。

http://www.justsystems.com/jp/products/photomovie/

1)「写真2枚以上を一つの画面に入れる」という非常に簡単なことが、1つの映像の中で15回しか出来ない欠陥商品なのに、パッケージにもAmazonにも書いていない詐欺ソフトウェア

サポートセンター電話をしたら、そういう仕様だと説明された。パッケージにも説明書にもどこにも、そういう仕様だと書いていないことも認めた。)

2)動画最後に「ありがとうございました」という画像を、「切らずに全画面に」入れることが出来ない。スライドショーソフトなのに全画面が出来ないとか…これまた詐欺ソフト

3)仕方がないから3つの動画に分割して作り、「ありがとうございました」画像も作って映像化、最後ffmpegで全連結しようとするがうまくいかない。

前提:式場はDVDしか受け付けない

3−1)3つの動画の単純連結はエンコードありなら出来る

3−2)動画の連結を再エンコードなしでやろうと失敗する。

3−2−1)NTSCに使われているDVD規格は、単純なファイル連結が動画連結になり、mpgファイル普通に再生できるのだが、DVDオーサリングで失敗する。

3−2−2)再エンコードなしのアプローチで「ありがとうございました」画像映像化を行って、接続するしかない…

結婚式は今週末。迫る時間JustSystemsが我々の結婚式破壊した。

  • 追記

できた!できたぞぉぉぉぉぉ!!!映像を3つくっつけて最後に「ありがとうございました」を5秒間表示させるのに、6〜8時間かかったわ。

このソフトで唯一マトモに出力できる高解像度動画形式wmvを3つ(vid1.wmv, vid2.wmv, vid3.wmv)連結して、最後に「ありがとうございました」画像image.jpgをくっつけ、NSTC形式DVD16:9にしてそのままオーサリングソフトで焼けるようにするためのffmpegオプションの設定の仕方がとうとうわかった!

ffmpeg -i vid1.wmv -i vid2.wmv -i vid3.wmv -loop 1 -t 5 -i image.jpg -f lavfi -t 5 -i anullsrc=channel_layout=stereo:sample_rate=48000 -filter_complex "[3:0]scale=1280x720,setsar=1:1[v2],[0:1][0:0][1:1][1:0][2:1][2:0][v2][4:0]concat=n=4:v=1:a=1[v3][a3]" -map '[v3]' -map '[a3]' -shortest -target ntsc-dvd output.mpg

ここで技術力がないとか、計画が悪いとか、ハゲとか(ハゲではない)、バカとか罵詈雑言を浴びせられるだけで無能感高まっていたが、どうして、最初からffmpeg名前を出しているのに、上のコマンドぐらいパッと送ってくれる人間がいないのか。みんな、そんなに悪意に満ちているのか。

まぁ、映像専門のエンジニアにしてみれば「ばーか、6時間もかからないよ」というところなんだろうけど、映像専門じゃないんでスミマセンね。

つまづいたのは、

イ)concat filterがv=1,a=1を設定した時、[vid1のvideo stream][vid1のaudio stream][vid2のvideo stream][vid2のaudio stream]という形でビデオと音声のstreamを交互に並べていけないといかないところ

ロ)concat filterが必ずaudio stream指定して動く形になっているため、無音のaudio streamをanullsrcで作ってやらないといけないところ

ハ)anullsrcは無限時間無音声を生成し続けるので、通常は-shortestを指定して時間制限するのだが、anullsrcとconcat filterを組み合わせる時は、-shortestを指定しても無限時間音声生成が止まらないところ。なぜかわからないが、-t 5で直接5秒間指定して音声を切ったわ。

というわけで、「感動かんたん!フォトムービー8」を使って結婚式ムービーを作るためには、これだけの知識必要になるので、パッケージに書いておいてください。じゃないと、詐欺だと思います。まる。

2017-05-26

http://anond.hatelabo.jp/20170526222228

stereo / monoなら英語で書けるけど、「モノラル」はちゃんと英語で書けない人が結構多い、みたいな

ちなみにmonoralではない

2012-01-05

Types of digital cameras

Digital cameras are made in a wide range of sizes, prices and capabilities. The majority are camera phones, operated as a mobile application through the cellphone menu. Professional photographers and many amateurs use larger, more expensive digital single-lens reflex cameras (DSLR) for their greater versatility. Between these extremes lie digital compact cameras and bridge digital cameras that "bridge" the gap between amateur and professional cameras. Specialized cameras including multispectral imaging equipment and astrographs continue to serve the scientific, military, medical and other special purposes for which digital photography was invented.

[edit]Compact digital cameras

Subcompact with lens assembly retracted

Compact cameras are designed to be tiny and portable and are particularly suitable for casual and "snapshot" uses. Hence, they are also called point-and-shoot cameras. The smallest, generally less than 20 mm thick, are described as subcompacts or "ultra-compacts" and some are nearly credit card size.[2]

Most, apart from ruggedized or water-resistant models, incorporate a retractable lens assembly allowing a thin camera to have a moderately long focal length and thus fully exploit an image sensor larger than that on a camera phone, and a mechanized lens cap to cover the lens when retracted. The retracted and capped lens is protected from keys, coins and other hard objects, thus making it a thin, pocketable package. Subcompacts commonly have one lug and a short wrist strap which aids extraction from a pocket, while thicker compacts may have two lugs for attaching a neck strap.

Compact cameras are usually designed to be easy to use, sacrificing advanced features and picture quality for compactness and simplicity; images can usually only be stored using lossy compression (JPEG). Most have a built-in flash usually of low power, sufficient for nearby subjects. Live preview is almost always used to frame the photo. Most have limited motion picture capability. Compacts often have macro capability and zoom lenses but the zoom range is usually less than for bridge and DSLR cameras. Generally a contrast-detect autofocus system, using the image data from the live preview feed of the main imager, focuses the lens.

Typically, these cameras incorporate a nearly silent leaf shutter into their lenses.

For lower cost and smaller size, these cameras typically use image sensors with a diagonal of approximately 6 mm, corresponding to a crop factor around 6. This gives them weaker low-light performance, greater depth of field, generally closer focusing ability, and smaller components than cameras using larger sensors.

Starting in 2011, some compact digital cameras can take 3D still photos. These 3D compact stereo cameras can capture 3D panoramic photos for play back on a 3D TV.[3] Some of these are rugged and waterproof, and some have GPS, compass, barometer and altimeter. [4]

[edit]Bridge cameras

Sony DSC-H2

Main article: Bridge camera

Bridge are higher-end digital cameras that physically and ergonomically resemble DSLRs and share with them some advanced features, but share with compacts the use of a fixed lens and a small sensor. Like compacts, most use live preview to frame the image. Their autofocus uses the same contrast-detect mechanism, but many bridge cameras have a manual focus mode, in some cases using a separate focus ring, for greater control. They originally "bridged" the gap between affordable point-and-shoot cameras and the then unaffordable earlier digital SLRs.

Due to the combination of big physical size but a small sensor, many of these cameras have very highly specified lenses with large zoom range and fast aperture, partially compensating for the inability to change lenses. On some, the lens qualifies as superzoom. To compensate for the lesser sensitivity of their small sensors, these cameras almost always include an image stabilization system to enable longer handheld exposures.

These cameras are sometimes marketed as and confused with digital SLR cameras since the appearance is similar. Bridge cameras lack the reflex viewing system of DSLRs, are usually fitted with fixed (non-interchangeable) lenses (although some have a lens thread to attach accessory wide-angle or telephoto converters), and can usually take movies with sound. The scene is composed by viewing either the liquid crystal display or the electronic viewfinder (EVF). Most have a longer shutter lag than a true dSLR, but they are capable of good image quality (with sufficient light) while being more compact and lighter than DSLRs. High-end models of this type have comparable resolutions to low and mid-range DSLRs. Many of these cameras can store images in a Raw image format, or processed and JPEG compressed, or both. The majority have a built-in flash similar to those found in DSLRs.

In bright sun, the quality difference between a good compact camera and a digital SLR is minimal but bridgecams are more portable, cost less and have a similar zoom ability to dSLR. Thus a Bridge camera may better suit outdoor daytime activities, except when seeking professional-quality photos.[5]

In low light conditions and/or at ISO equivalents above 800, most bridge cameras (or megazooms) lack in image quality when compared to even entry level DSLRs. However, they do have one major advantage: their much larger depth of field due to the small sensor as compared to a DSLR, allowing larger apertures with shorter exposure times.

A 3D Photo Mode was introduced in 2011, whereby the camera automatically takes a second image from a slightly different perspective and provides a standard .MPO file for stereo display. [6]

[edit]Mirrorless interchangeable-lens camera

Main article: Mirrorless interchangeable-lens camera

In late 2008, a new type of camera emerged, combining the larger sensors and interchangeable lenses of DSLRs with the live-preview viewing system of compact cameras, either through an electronic viewfinder or on the rear LCD. These are simpler and more compact than DSLRs due to the removal of the mirror box, and typically emulate the handling and ergonomics of either DSLRs or compacts. The system is used by Micro Four Thirds, borrowing components from the Four Thirds DSLR system.

[edit]Digital single lens reflex cameras

Cutaway of an Olympus E-30 DSLR

Main article: Digital single-lens reflex camera

Digital single-lens reflex cameras (DSLRs) are digital cameras based on film single-lens reflex cameras (SLRs). They take their name from their unique viewing system, in which a mirror reflects light from the lens through a separate optical viewfinder. At the moment of exposure the mirror flips out of the way, making a distinctive "clack" sound and allowing light to fall on the imager.

Since no light reaches the imager during framing, autofocus is accomplished using specialized sensors in the mirror box itself. Most 21st century DSLRs also have a "live view" mode that emulates the live preview system of compact cameras, when selected.

These cameras have much larger sensors than the other types, typically 18 mm to 36 mm on the diagonal (crop factor 2, 1.6, or 1). This gives them superior low-light performance, less depth of field at a given aperture, and a larger size.

They make use of interchangeable lenses; each major DSLR manufacturer also sells a line of lenses specifically intended to be used on their cameras. This allows the user to select a lens designed for the application at hand: wide-angle, telephoto, low-light, etc. So each lens does not require its own shutter, DSLRs use a focal-plane shutter in front of the imager, behind the mirror.

[edit]Digital rangefinders

Main article: Rangefinder camera#Digital rangefinder

A rangefinder is a user-operated optical mechanism to measure subject distance once widely used on film cameras. Most digital cameras measure subject distance automatically using electro-optical techniques, but it is not customary to say that they have a rangefinder.

[edit]Line-scan camera systems

A line-scan camera is a camera device containing a line-scan image sensor chip, and a focusing mechanism. These cameras are almost solely used in industrial settings to capture an image of a constant stream of moving material. Unlike video cameras, line-scan cameras use a single row of pixel sensors, instead of a matrix of them. Data coming from the line-scan camera has a frequency, where the camera scans a line, waits, and repeats. The data coming from the line-scan camera is commonly processed by a computer, to collect the one-dimensional line data and to create a two-dimensional image. The collected two-dimensional image data is then processed by image-processing methods for industrial purposes.

Further information: Rotating line camera

[edit]Integration

Many devices include digital cameras built into or integrated into them. For example, mobile phones often include digital cameras; those that do are known as camera phones. Other small electronic devices (especially those used for communication) such as PDAs, laptops and BlackBerry devices often contain an integral digital camera, and most 21st century camcorders can also make still pictures.

Due to the limited storage capacity and general emphasis on convenience rather than image quality, almost all these integrated or converged devices store images in the lossy but compact JPEG file format.

Mobile phones incorporating digital cameras were introduced in Japan in 2001 by J-Phone. In 2003 camera phones outsold stand-alone digital cameras, and in 2006 they outsold all film-based cameras and digital cameras combined. These camera phones reached a billion devices sold in only five years, and by 2007 more than half of the installed base of all mobile phones were camera phones. Sales of separate cameras peaked in 2008. [7]

Integrated cameras tend to be at the very lowest end of the scale of digital cameras in technical specifications, such as resolution, optical quality, and ability to use accessories. With rapid development, however, the gap between mainstream compact digital cameras and camera phones is closing, and high-end camera phones are competitive with low-end stand-alone digital cameras of the same generation.

[edit]Waterproof

A Canon WP-1 waterproof 35 mm film camera

Waterproof digital cameras are digital cameras that can make pictures underwater. Waterproof housings have long been made but they cost almost as the cameras. Many waterproof digital cameras are shockproof and resistant to low temperatures; one of them is Canon PowerShot D10, one of the first underwater digital cameras.

These cameras become very popular during the holiday season, because many people want to save the best moments from their holidays at the seaside. Waterproof watches and mobile phones were produced earlier. Most makers of digital cameras also produce waterproof ones and every year they launch at least one new model, for example Sony, Olympus, Canon, Fuji.

Healthways Mako Shark, an early waterproof camera,[8] was launched in 1958 and cost around 25 dollars. It was a huge camera and pictures were black and white.

___________________________

http://www.gobatteryonline.com/canon-nb-9l-digital-camera-battery-gose.html

http://www.gobatteryonline.com/canon-lp-e5-digital-camera-battery-gose.html

http://www.gobatteryonline.com/canon-powershot-sd500-battery-charger-gose.html

 
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