WordNet
- an undulating curve (同)undulation
- a persistent and widespread unusual weather condition (especially of unusual temperatures); "a heat wave"
- set waves in; "she asked the hairdresser to wave her hair"
- a movement like that of a sudden occurrence or increase in a specified phenomenon; "a wave of settlers"; "troops advancing in waves"
- one of a series of ridges that moves across the surface of a liquid (especially across a large body of water) (同)moving ridge
- (physics) a movement up and down or back and forth (同)undulation
- the act of signaling by a movement of the hand (同)waving, wafture
- a hairdo that creates undulations in the hair
- something that rises rapidly; "a wave of emotion swept over him"; "there was a sudden wave of buying before the market closed"; "a wave of conservatism in the country led by the hard right"
- drive by or as if by pulsation; "A soft breeze pulsed the air"
- the rate at which the heart beats; usually measured to obtain a quick evaluation of a persons health (同)pulse_rate, heart_rate
- the rhythmic contraction and expansion of the arteries with each beat of the heart; "he could feel the beat of her heart" (同)pulsation, heartbeat, beat
- edible seeds of various pod-bearing plants (peas or beans or lentils etc.)
- produce or modulate (as electromagnetic waves) in the form of short bursts or pulses or cause an apparatus to produce pulses; "pulse waves"; "a transmitter pulsed by an electronic tube" (同)pulsate
- a member of the womens reserve of the United States Navy; originally organized during World War II but now no longer a separate branch
- 100 puls equal 1 afghani in Afghanistan
PrepTutorEJDIC
- (前後左右・上下に)『揺れる』,ひらめく,ひらひらする / (波形に)『起伏する』,うねる / (手・旗などを振って)『合図する』,手を振る;(…のために,…に向かって)手を振る《+in(to, at)+名》 / (に向かって)‘…を'振る,揺り動かす,ひらめかす《+名+at+名》 / 《方向を表す副詞[句]を伴って》(手・旗などを振って)〈人〉‘に'『合図する』 / ‘…を'起伏させる,うねらせる:〈頭髪〉‘を'ウエーブさせる / 『波』,波浪 / (…の)『波のような動き』,うねり《+of+名》 / (感情・景気などの一時的な)高まり,強まり;(寒暑の)急激な波《+of+名》 / (手・旗などを)振ること,振ってする合図;(…を)振ること《+of+名》 / (髪の)縮れ,ウエーブ / (光・音・電気などの)波
- 《通例単数形で》『脈はく』 / (一般に,規則的な)鼓動,律動 / (電気の)パルス / (一般的な)傾向 / 脈を打つ,鼓動する
- 〈U〉《時に複数扱い》(食用の)豆類 / 〈C〉《通例複数形で》豆のとれる植物
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2016/05/05 17:32:04」(JST)
[Wiki en表示]
This article is about a pulse wave form. For a heart beat, see Pulse.
This article is about a rectangular pulse train. For a Dirac pulse train, see Sampling function.
For the aperiodic version, see Pulse function.
For other uses, see Pulse (disambiguation).
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The shape of the pulse wave is defined by its duty cycle D, which is the ratio between the pulse duration () and the period (T)
A pulse wave or pulse train is a kind of non-sinusoidal waveform that is similar to a square wave, but does not have the symmetrical shape associated with a perfect square wave. It is a term common to synthesizer programming, and is a typical waveform available on many synthesizers. The exact shape of the wave is determined by the duty cycle of the oscillator. In many synthesizers, the duty cycle can be modulated (sometimes called pulse-width modulation) for a more dynamic timbre.[1] The pulse wave is also known as the rectangular wave, the periodic version of the rectangular function.
The Fourier series expansion for a rectangular pulse wave with period T and pulse time τ is
Note that, for symmetry, the starting time (t = 0) in this expansion is halfway through the first pulse. The phase can be offset to match the accompanying graph by replacing t with t - τ/2.
A pulse wave can be created by subtracting a sawtooth wave from a phase-shifted version of itself. If the sawtooth waves are bandlimited, the resulting pulse wave is bandlimited, too. Another way to create one is with a single ramp wave (sawtooth or triangle) and a comparator, with the ramp wave on one input, and a variable DC[clarification needed] threshold on the other. The result will be a precisely controlled pulse width, but it will not be bandlimited.
Acoustically, the rectangular wave has been described as having a more "narrow and nasal" sound than a perfect square wave, and its characteristic sound features prominently in many Steve Winwood songs. [2]
See also
- Sampling function
- Pulse-width modulation
- Sine wave
- Triangle wave
- Square wave
References
- ^ http://www.soundonsound.com/sos/feb00/articles/synthsecrets.htm
- ^ "Synth Soloing in the Style of Steve Winwood".
UpToDate Contents
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- 1. 頚静脈波の検討 examination of the jugular venous pulse
- 2. 動脈拍動の検討 examination of the arterial pulse
- 3. 脈圧の上昇 increased pulse pressure
- 4. ドップラー心エコーの原理 principles of doppler echocardiography
- 5. 僧帽弁の心エコー評価 echocardiographic evaluation of the mitral valve
English Journal
- On the Design of Passive Resonant Circuits to Measure Local Pulse Wave Velocity in a Stent.
- Schachtele J.
- IEEE transactions on biomedical circuits and systems.IEEE Trans Biomed Circuits Syst.2016 Jun;10(3):612-22. doi: 10.1109/TBCAS.2015.2496420. Epub 2016 Jan 20.
- In-stent restenosis is a frequent complication after stent implantation. This article investigates the design of a passive sensor system to be integrated into a stent for the detection of an in-stent restenosis by measuring the local pulse wave velocity (PWV). The proposed system uses two resonant c
- PMID 26800547
- The pulsatility volume index: an indicator of cerebrovascular compliance based on fast magnetic resonance imaging of cardiac and respiratory pulsatility.
- Bianciardi M1, Toschi N2, Polimeni JR3, Evans KC4, Bhat H5, Keil B6, Rosen BR3, Boas DA3, Wald LL3.
- Philosophical transactions. Series A, Mathematical, physical, and engineering sciences.Philos Trans A Math Phys Eng Sci.2016 May 13;374(2067). pii: 20150184. doi: 10.1098/rsta.2015.0184.
- The influence of cardiac activity on the viscoelastic properties of intracranial tissue is one of the mechanisms through which brain-heart interactions take place, and is implicated in cerebrovascular disease. Cerebrovascular disease risk is not fully explained by current risk factors, including art
- PMID 27044992
- Quantification of molecular interactions between ApoE, amyloid-beta (Aβ) and laminin: Relevance to accumulation of Aβ in Alzheimer's disease.
- Zekonyte J1, Sakai K2, Nicoll JA3, Weller RO3, Carare RO3.
- Biochimica et biophysica acta.Biochim Biophys Acta.2016 May;1862(5):1047-53. doi: 10.1016/j.bbadis.2015.08.025. Epub 2015 Aug 29.
- Accumulation of amyloid-β (Aβ) in plaques in the brain and in artery walls as cerebral amyloid angiopathy indicates a failure of elimination of Aβ from the brain with age and Alzheimer's disease. A major pathway for elimination of Aβ and other soluble metabolites from the brain is along basement
- PMID 26327683
Japanese Journal
- Characteristics of pulsed dual frequency inductively coupled plasma
- Seo Jin,Kim Kyoung,Kim Ki,Kim Tae,Yeom Geun
- Jpn. J. Appl. Phys. 54(1S), 01AA10, 2014-12-18
- … When the duty percentage was decreased from continuous wave (CW) mode to 30% for the inner or outer ICP antenna, decrease of the average electron temperature was observed for the pulsing of each antenna. … When SiO<inf>2</inf>etching was investigated as a function of pulse duty percentage, increase of the etch selectivity of SiO<inf>2</inf>over amorphous carbon layer (ACL) was observed while decreasing the SiO<inf>2</inf>etch rate. …
- NAID 150000109994
- Effect of source frequency and pulsing on the SiO
- Kim Hoe,Jeon Min,Mishra Anurag,Kim In,Sin Tae,Yeom Geun
- Jpn. J. Appl. Phys. 54(1S), 01AE07, 2014-12-16
- … A SiO<inf>2</inf>layer masked with an amorphous carbon layer (ACL) has been etched in an Ar/C<inf>4</inf>F<inf>8</inf>gas mixture with dual frequency capacitively coupled plasmas under variable frequency (13.56–60 MHz)/pulsed rf source power and 2 MHz continuous wave (CW) rf bias power, the effects of the frequency and pulsing of the source rf power on the SiO<inf>2</inf>etch characteristics were investigated. …
- NAID 150000110001
- 井福 裕俊,宮村 直幸,坂本 将基,齋藤 和也,中山 貴文,イフク ヒロトシ,ミヤムラ ナオユキ,サカモト マサノリ,サイトウ カズヤ,ナカヤマ タカフミ,Ifuku Hirotoshi,Miyamura Naoyuki,Sakamoto Masanori,Saitoh Kazuya,Nakayama Takafumi
- 熊本大学教育学部紀要 63, 319-322, 2014-12-12
- … Blood pressure, heart rate, stroke volume, cardiac output, total peripheral resistance,cardiac contractility, and pulse wave velocity during head-up tilt were measured in eight untrained females and six males. …
- NAID 120005524455
Related Links
- Clicca qui per vedere la versione senza frames. Pulsewave - パルス波. Pulsewave - パルス波. http://saturnix.altervista.org. Clicca qui per vedere la versione senza frames.
- ... and has played chipmusic scene institutions Pulsewave, I/O, 8static, PAX East, MAGFest, Toy Company Montreal, and Blip Festival 2012. http://kriskeyser.com/ (ノ> <)ノ nickelPUNK Where the past meets the future and ...
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