BE395356A - - Google Patents
Info
- Publication number
- BE395356A BE395356A BE395356DA BE395356A BE 395356 A BE395356 A BE 395356A BE 395356D A BE395356D A BE 395356DA BE 395356 A BE395356 A BE 395356A
- Authority
- BE
- Belgium
- Prior art keywords
- reflector
- microphone
- sound
- axis
- energy
- Prior art date
Links
- 239000000463 material Substances 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- ZYXYTGQFPZEUFX-UHFFFAOYSA-N benzpyrimoxan Chemical compound O1C(OCCC1)C=1C(=NC=NC=1)OCC1=CC=C(C=C1)C(F)(F)F ZYXYTGQFPZEUFX-UHFFFAOYSA-N 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/342—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for microphones
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE395356A true BE395356A (esLanguage) |
Family
ID=62419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE395356D BE395356A (esLanguage) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE395356A (esLanguage) |
-
0
- BE BE395356D patent/BE395356A/fr unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2001071423A1 (fr) | Dispositif d'acquisition d'image panoramique | |
| FR2668874A1 (fr) | Systeme a aimants permanents associes a un assemblage de bobines, et utilisation d'un tel systeme dans un haut-parleur ou dans un detecteur. | |
| CA2063017C (fr) | Procede et dispositif de determination du diagramme de rayonnement d'une antenne | |
| FR2631685A1 (fr) | Dispositif capteur de rayons solaires | |
| EP0387144B1 (fr) | Dispositif pour recouvrir une surface plane d'une couche d'épaisseur uniforme | |
| FR2537800A1 (fr) | Moteur lineaire a deux axes | |
| BE395356A (esLanguage) | ||
| US2049586A (en) | Single reflector type microphone | |
| CA2228675A1 (fr) | Dispositif de controle non destructif par ultrasons d'une piece de forme allongee | |
| EP0040113B1 (fr) | Sismomètre | |
| BE356544A (esLanguage) | ||
| FR2503351A1 (fr) | Dispositif de mesure d'epaisseur de couche mince par un rayonnement x de fluorescence | |
| FR2466108A1 (fr) | Source primaire cassegrain pour une antenne parabolique | |
| FR2651071A1 (fr) | Antenne a reflecteur pour radar | |
| BE358713A (esLanguage) | ||
| FR2736256A1 (fr) | Appareil d'examens radiologiques | |
| EP2905589A2 (fr) | Antenne de mesure | |
| CH137792A (fr) | Dispositif émetteur de sons. | |
| FR2664782A1 (fr) | Enceinte acoustique omnidirectionnelle. | |
| JPS6247073Y2 (esLanguage) | ||
| FR2696547A1 (fr) | Installation de mesure des fractions de puissance transmise, réfléchie et diffractée par un matériau sur lequel est focalisée une onde radioélectrique, en vue de déterminer les caractéristiques radioélectriques de ce matériau. | |
| BE364449A (esLanguage) | ||
| FR2702918A1 (fr) | Appareil de prise et de restitution de son, et son application à l'audio-conférence. | |
| BE382427A (esLanguage) | ||
| EP0392917B1 (fr) | Dispositif optique d'analyse de documents |