SE428346B - THE PRESSURE GAS DRIVE SOUND TRANSMITTER WITH THE RESONANCE HORN AND WITH THE BODY FOR CONTROL OF THE PRESSURE OF THE PRESSURE GAS THROUGH THE RESONANCE HORN - Google Patents
THE PRESSURE GAS DRIVE SOUND TRANSMITTER WITH THE RESONANCE HORN AND WITH THE BODY FOR CONTROL OF THE PRESSURE OF THE PRESSURE GAS THROUGH THE RESONANCE HORNInfo
- Publication number
- SE428346B SE428346B SE8007294A SE8007294A SE428346B SE 428346 B SE428346 B SE 428346B SE 8007294 A SE8007294 A SE 8007294A SE 8007294 A SE8007294 A SE 8007294A SE 428346 B SE428346 B SE 428346B
- Authority
- SE
- Sweden
- Prior art keywords
- fluidistor
- horn
- resonant
- sound
- transmitter according
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K5/00—Whistles
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Description
15 20 25 30 35 40 8007294-5 2 FIG. 3 är en schematisk 1ängdsektionsvy av Ijudsändaren en1igt uppfinningen, utförd med sjä1vsvängande effekt-- f1uidistor, FIG. 4 är en schematisk 1ängdsektionsvy av ett modi- fierat utförande av 1judsändaren i FIG. 3, FIG. 5 är en schematisk 1ängdsektionsvy av ett ytter- 1igare modifierat utförande av 1judsändaren i FIG. 3. 15 20 25 30 35 40 8007294-5 2 FIG. 3 is a schematic longitudinal sectional view of the sound transmitter according to the invention, made with self-oscillating power fluid resistors, FIG. 4 is a schematic longitudinal sectional view of a modified embodiment of the sound transmitter of FIG. 3, FIG. 5 is a schematic longitudinal sectional view of a further modified embodiment of the sound transmitter of FIG. 3.
FIG. 6 är en schematisk 1ängdsektionsvy av ännu ett modifierat utförande av 1judsändaren i FIG. 3, FIG. 7 är en schematisk 1ängdsektionsvy av en vidare- utveck1ing av 1judsändaren i FIG. 6, FIG. 8 är en schematisk 1ängdsektionsvy av 1judsändaren i FIG. 3, anordnad med två resonanshorn, och I GFIG. 9 är en schematisk Iängdsektionsvy av 1judsändaren i FIG. 8 med fasförskjutning me11an de båda resonans- hornen.FIG. 6 is a schematic longitudinal sectional view of yet another modified embodiment of the sound transmitter of FIG. 3, FIG. 7 is a schematic longitudinal sectional view of a further development of the sound transmitter of FIG. 6, FIG. 8 is a schematic longitudinal sectional view of the sound transmitter of FIG. 3, arranged with two resonant horns, and I GFIG. 9 is a schematic longitudinal sectional view of the sound transmitter of FIG. 8 with phase shift between the two resonant horns.
Ljudsändaren i FIG. 1 innefattar en effektf1uidistor 10 med en rak in1oppskana1 11, som är anordnad att ans1utas ti11 en tryckgaskä11a, varvid med denna term avses inte enbart en .kä11a för gas under tryck utan även en kä11a för gasb1andning (exempe1vis 1uft) e11er ånga under tryck. F1uidistorn har två ut1oppsben 12 och 13, som bi1dar en viss vinke1 med varandra och är skilda åt mede1st en egg 14 på det konven- tione11a sättet. Ti11 det ena av dessa ut1oppsben är ans1utet ett med ytter1uften kommunicerande resonanshorn 15, medan 7 ti11 det andra är ans1utet ett med ytter1uften kommunicerande rörformigt organ 16 med en avstämd strypning, så att organet har huvudsakligen samma akustiska ingångsimpedans som reso- nanshornet. Effektf1uidistorn arbetar en1igt väggeffekten (Coanda-effekten), och vid ti11förse1 av tryckgas ti11 in1oppskana1en 11 bi1das i övergången från in1oppskana1en ti11 de båda ut1oppsbenen 12 och 13 vid eggen 14 me11an dessa en virve1, varvid undertryck uppstår. F1uidistorn är i sig sjä1v bistabiï men genom ans1utningen av resonans- hornet 15 kommer Iuften att dirigeras omväx1ande ti11 det ena och det andra av de båda ut1oppsbenen med en frekvens, som bestämmes av den ti11 ut1oppsbenet 12 ans1utna kana1ens (resonanshornets) vo1ym, och fluidistorn fungerar sâ1unda i detta fa11 som en sjä1vsvängande f1uidistor; styrd av resonanshornets 15 akustiska impedans, varvid de uppkomna 10 15 20 25 30 35 40 8907294-5 svängningarna förstärkes i hornet.The audio transmitter in FIG. 1 comprises a power fluid resistor 10 with a straight inlet duct 11, which is arranged to be connected to a pressurized gas source, this term not only referring to a source for gas under pressure but also a source for gas mixing (for example 1 air) or steam under pressure. The fluid separator has two outlet legs 12 and 13, which form a certain angle with each other and are separated by an edge 14 in the conventional manner. To one of these outlet legs is connected a resonant horn 15 communicating with the outside air, while 7 to the other is connected a tubular member 16 communicating with the outside air with a tuned choke, so that the member has substantially the same acoustic input impedance as the resonant horn. The power fluid diffuser operates according to the wall power (Coanda effect), and when supplying pressurized gas to the inlet duct 11 is formed in the transition from the inlet duct to the two outlet legs 12 and 13 at the edge 14 between them a vortex, whereby negative pressure arises. The fluid diffuser is itself bistable, but through the connection of the resonant horn 15 the air will be directed alternately to one and the other of the two outlet legs at a frequency determined by the function of the channel (resonant horn) of the channel (fluid horn) and the fluid of the outlet leg 12. thus in this case as a self-oscillating fluid resistor; controlled by the acoustic impedance of the resonant horn 15, the resulting oscillations being amplified in the horn.
I stället för att låta resonanshornet styra själva svängningen hos effektfluidistorn l0, kan man anordna fluidistorn tvångsstyrd från en separat självsvängande styrfluidistor av konventionell typ. Detta är visat i FIG. 2, där fluidistorn l0 är anordnad med två styrmun- stycken l7 och 18, vilka är anslutna till styrfluidistorns utloppsben. För optimal uteffekt från ljudsändaren skall resonanshornet i detta fall ha en resonansfrekvens, som är huvudsakligen likamed den frekvens, varmed effektfluidistorn l0 svänger, styrd av den självsvängande styrfluidistorn l9.Instead of letting the resonant horn control the actual oscillation of the power fluidistor 10, the fluidistor can be arranged forcibly controlled from a separate self-oscillating control fluidistor of conventional type. This is shown in FIG. 2, where the fluidistor 10 is arranged with two control nozzles 17 and 18, which are connected to the outlet legs of the control fluidistor. For optimum output power from the sound transmitter, the resonant horn in this case must have a resonant frequency which is substantially equal to the frequency at which the power fluidistor 10 oscillates, controlled by the self-oscillating control fluidistor 19.
Samma styrfluidistor kan vara anordnad att styra flera ljudsändare.The same control fluidistor can be arranged to control several audio transmitters.
FIG. 3 visar åter en självsvängande effektfluidistor, men i detta fall är fluidistorn anordnad självsvängande genom att en styrkanal eller “styrresonator" 20 är ansluten till de båda styrmunstyckena l7 och l8. Styrkanalens volym bestämmer i samverkan med resonanshornet l5 fluidistorns svängningsfrekvens.FIG. 3 again shows a self-oscillating power fluidistor, but in this case the fluidistor is arranged self-oscillating in that a control channel or "control resonator" 20 is connected to the two control nozzles 17 and 18. The volume of the control channel determines the frequency of oscillation of the fluidistor in cooperation with the resonant horn 15.
Ett annat sätt att göra effektfluidistorn l0 själv- svängande är visat i FIG. 4, där de båda styrmunstyckena l7 och 18 genom kanaler eller ledningar 2l och 22 är anslutna till utloppsbenet 13 resp. utloppsbenet 12. Genom ejektor- verkan i utloppsbenen uppkommer en tryckändring i styr- munstyckena, varigenom luftflödet genom fluidistorn ställes om och fluidistorn sålunda blir självsvängande med en frekvens, som bestämmas av dimensioneringen av kanalerna eller ledningarna Zl och 22.Another way of making the power fluidistor 10 self-oscillating is shown in FIG. 4, where the two guide nozzles 17 and 18 are connected to the outlet leg 13 and 22, respectively, by channels or lines 21 and 22. the outlet leg 12. Due to the ejector action in the outlet legs, a pressure change occurs in the control nozzles, whereby the air flow through the fluidistor is switched and the fluidistor thus becomes self-oscillating at a frequency determined by the dimensioning of the channels or lines Z1 and 22.
FIG. 5 visar ännu ett sätt för styrning av effekt- fluidistorn 10. I detta fall är det ena styrmunstycket l7 ersatt med ett hålrum 23 och tillföres styrluft genom det andra styrmunstycket 18. Vid rätt förhållande mellan styr- luftens tryck och hålrummets 23 volym kommer fluidistorn i självsvängning.FIG. 5 shows another method of controlling the power fluidistor 10. In this case, one control nozzle 17 is replaced by a cavity 23 and control air is supplied through the other control nozzle 18. At the correct ratio between the pressure of the control air and the volume of the cavity 23, the fluidistor self-oscillation.
Utförandet enligt FIG. 6 utgör ytterligare en variant av anordningen för styrning av fluidistorn. I detta fall är organet l6 anslutet till hornets l5 hals och mynnar sålunda i hornet för att genom detta kommunicera med den yttre atmosfären. Det är utformat med sådan längd, att det erhålles en fasförskjutning mellan luftflödet genom hornetThe embodiment according to FIG. 6 is a further variant of the device for controlling the fluidistor. In this case, the member 16 is connected to the neck 15 of the horn and thus opens into the horn to thereby communicate with the external atmosphere. It is designed with such a length that a phase shift between the air flow through the horn is obtained
Claims (10)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8007294A SE428346B (en) | 1980-10-17 | 1980-10-17 | THE PRESSURE GAS DRIVE SOUND TRANSMITTER WITH THE RESONANCE HORN AND WITH THE BODY FOR CONTROL OF THE PRESSURE OF THE PRESSURE GAS THROUGH THE RESONANCE HORN |
DE8181902856T DE3174198D1 (en) | 1980-10-17 | 1981-10-15 | Pressurized gas driven sound emitter |
AU77211/81A AU7721181A (en) | 1980-10-17 | 1981-10-15 | Pressurized gas driven sound emitter |
AT81902856T ATE18723T1 (en) | 1980-10-17 | 1981-10-15 | HIGH PRESSURE GAS POWERED RADIATOR. |
EP81902856A EP0070279B1 (en) | 1980-10-17 | 1981-10-15 | Pressurized gas driven sound emitter |
PCT/SE1981/000302 WO1982001329A1 (en) | 1980-10-17 | 1981-10-15 | Pressurized gas driven sound emitter |
JP56503322A JPS57501749A (en) | 1980-10-17 | 1981-10-15 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8007294A SE428346B (en) | 1980-10-17 | 1980-10-17 | THE PRESSURE GAS DRIVE SOUND TRANSMITTER WITH THE RESONANCE HORN AND WITH THE BODY FOR CONTROL OF THE PRESSURE OF THE PRESSURE GAS THROUGH THE RESONANCE HORN |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8007294L SE8007294L (en) | 1982-04-18 |
SE428346B true SE428346B (en) | 1983-06-27 |
Family
ID=20342011
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8007294A SE428346B (en) | 1980-10-17 | 1980-10-17 | THE PRESSURE GAS DRIVE SOUND TRANSMITTER WITH THE RESONANCE HORN AND WITH THE BODY FOR CONTROL OF THE PRESSURE OF THE PRESSURE GAS THROUGH THE RESONANCE HORN |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0070279B1 (en) |
JP (1) | JPS57501749A (en) |
SE (1) | SE428346B (en) |
WO (1) | WO1982001329A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7148879B2 (en) | 2000-07-06 | 2006-12-12 | At&T Corp. | Bioacoustic control system, method and apparatus |
US8908894B2 (en) | 2011-12-01 | 2014-12-09 | At&T Intellectual Property I, L.P. | Devices and methods for transferring data through a human body |
US10108984B2 (en) | 2013-10-29 | 2018-10-23 | At&T Intellectual Property I, L.P. | Detecting body language via bone conduction |
US9594433B2 (en) | 2013-11-05 | 2017-03-14 | At&T Intellectual Property I, L.P. | Gesture-based controls via bone conduction |
US10678322B2 (en) | 2013-11-18 | 2020-06-09 | At&T Intellectual Property I, L.P. | Pressure sensing via bone conduction |
US9349280B2 (en) | 2013-11-18 | 2016-05-24 | At&T Intellectual Property I, L.P. | Disrupting bone conduction signals |
US9715774B2 (en) | 2013-11-19 | 2017-07-25 | At&T Intellectual Property I, L.P. | Authenticating a user on behalf of another user based upon a unique body signature determined through bone conduction signals |
US9405892B2 (en) | 2013-11-26 | 2016-08-02 | At&T Intellectual Property I, L.P. | Preventing spoofing attacks for bone conduction applications |
US9589482B2 (en) | 2014-09-10 | 2017-03-07 | At&T Intellectual Property I, L.P. | Bone conduction tags |
US9882992B2 (en) | 2014-09-10 | 2018-01-30 | At&T Intellectual Property I, L.P. | Data session handoff using bone conduction |
US9582071B2 (en) | 2014-09-10 | 2017-02-28 | At&T Intellectual Property I, L.P. | Device hold determination using bone conduction |
US10045732B2 (en) | 2014-09-10 | 2018-08-14 | At&T Intellectual Property I, L.P. | Measuring muscle exertion using bone conduction |
US9600079B2 (en) | 2014-10-15 | 2017-03-21 | At&T Intellectual Property I, L.P. | Surface determination via bone conduction |
US10831316B2 (en) | 2018-07-26 | 2020-11-10 | At&T Intellectual Property I, L.P. | Surface interface |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE193387C1 (en) * | 1964-01-01 | |||
US1530899A (en) * | 1923-07-24 | 1925-03-24 | Limon Francois | Whistle operated by steam or compressed gas and intended for use upon railroads or for navigation, aviation, or like purposes |
US3111931A (en) * | 1960-03-31 | 1963-11-26 | Albert G Bodine | Oscillatory fluid stream driven sonic generator with elastic autoresonator |
DE1433147B2 (en) * | 1961-04-08 | 1970-08-13 | Bowles, Romald Edward, Silver Spring; Horton, Billy Mitchusson, Kensington; Md. (V.St.A.) | Device for generating mechanical vibrations that perform technical work by means of a medium flowing through beam amplifiers and energy storage devices |
DE1181591B (en) * | 1963-02-01 | 1964-11-12 | Siemens Ag | Pneumatically or hydraulically operated optical or acoustic signaling device |
DE1235775B (en) * | 1965-11-13 | 1967-03-02 | M A N Turbo G M B H | Lip whistle |
US3416487A (en) * | 1966-03-22 | 1968-12-17 | Green Eng Co | Method and apparatus for generating and applying sonic energy |
GB1145727A (en) * | 1966-06-06 | 1969-03-19 | Imp Riv Srl | Alarm systems |
FR1531690A (en) * | 1967-05-25 | 1968-07-05 | Commissariat Energie Atomique | Acoustic generators |
US3701334A (en) * | 1970-09-14 | 1972-10-31 | Bendix Corp | Annular slot proportional jet amplifier for a fluidic sound generator |
US3850135A (en) * | 1973-02-14 | 1974-11-26 | Hughes Tool Co | Acoustical vibration generation control apparatus |
SE376317B (en) * | 1973-09-24 | 1975-05-12 | Kockums Mekaniska Verkstads Ab | |
US3911858A (en) * | 1974-05-31 | 1975-10-14 | United Technologies Corp | Vortex acoustic oscillator |
JPS5936480B2 (en) * | 1976-02-10 | 1984-09-04 | ソニー株式会社 | speaker device |
FR2442565A1 (en) * | 1978-11-24 | 1980-06-20 | Bertin & Cie | METHOD OF FLUID ACOUSTIC AMPLIFICATION AND PNEUMATIC SPEAKER FOR IMPLEMENTING THE SAME |
-
1980
- 1980-10-17 SE SE8007294A patent/SE428346B/en unknown
-
1981
- 1981-10-15 WO PCT/SE1981/000302 patent/WO1982001329A1/en active IP Right Grant
- 1981-10-15 JP JP56503322A patent/JPS57501749A/ja active Pending
- 1981-10-15 EP EP81902856A patent/EP0070279B1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
WO1982001329A1 (en) | 1982-04-29 |
SE8007294L (en) | 1982-04-18 |
JPS57501749A (en) | 1982-09-24 |
EP0070279A1 (en) | 1983-01-26 |
EP0070279B1 (en) | 1986-03-26 |
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