SU718946A1 - Sound amplification device - Google Patents
Sound amplification device Download PDFInfo
- Publication number
- SU718946A1 SU718946A1 SU782676319A SU2676319A SU718946A1 SU 718946 A1 SU718946 A1 SU 718946A1 SU 782676319 A SU782676319 A SU 782676319A SU 2676319 A SU2676319 A SU 2676319A SU 718946 A1 SU718946 A1 SU 718946A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- amplification device
- signals
- sound amplification
- frequencies
- sound
- Prior art date
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Description
и далее на громкоговоритель 3 поступают только те составл ющие, чгастоТь которых наход тс в полосе пропускани фильтра; 4 при отсутствии сигнала управлёнШ, т. е. частоты ниже 300 Гц. Кроме того, звуко- 5 вые сигналы поступают на вход цепи 5 упр лени . Частотна характеристика фильтра 7 в цепи 5 управлени имеет такойand further, only those components are delivered to the loudspeaker 3, whose components are in the passband of the filter; 4 in the absence of a control signal, that is, frequencies below 300 Hz. In addition, acoustic signals are fed to the input of control circuit 5. The frequency response of the filter 7 in the control circuit 5 has such
дГ чтб пбсле усМШШ BcnoMorafeSbliQM усилителем 6 сигналы с частотами, вьтзы- ю вающими самовозбуждение, ослабл вэтс , а сигналы с частотами, не вызывающими самовозбуждени , проход т на вход фильтра 7 в цепи управлени без ослабл ени . Далее, поступа на вход выпр мител 8, 15In addition, the BcnoMorafeSbliQM amplifier 6 signals with frequencies that affect self-excitation weakened the waves, and the signals with frequencies that did not cause self-excitation passed to the input of the filter 7 in the control circuit without attenuation. Further, the entrance to the rectifier 8, 15
сигналы .1C частотами ниже 300 Гц выпр мл ютс . Выходной сигнал выпр мител 8signals. 1C frequencies below 300 Hz are rectified. Rectifier 8 output
расшйр ёт полосу пропускани . управл ёмого фильтра 4, котора становитс равномерной во всем диапазоне звуковьщ ча- 20 стот. При этом обеспечиваетс качественное усиление звуковых сигналов во всей ИЪлосе рабочих частот устройства звукоусилени .extends bandwidth. control filter 4, which becomes uniform over the entire range of sound — 20 slots. At the same time, high-quality sound signals are amplified throughout the operating frequency of the sound-amplifying device.
После -прекращени поступлёни на вход 25 микрофона / звуковых сигналов с частотами , лежащими за пределами, диапазона частот, опасных дл самовозбуждени , сигнал управлени , на выходе выпр мител 8 пропадает и фильтр вновь избирИШЯо задерживает сигналы с опасными частота- 30After termination of the input to microphone input 25 of the microphone / sound signals with frequencies lying outside the range of frequencies that are dangerous for self-excitation, the control signal, the output of the rectifier 8 disappears and the filter again elects to delay the signals with dangerous frequencies.
ми. ОбычньтХПауЗ между словами переда заемой речи достаточно дл обеспечени устойчивости .устройства звукоусилени , и самовозбуждени не возникает.mi A simple CPSP between the words of the transmitted speech is sufficient to ensure the stability of the sound amplification device, and self-excitation does not occur.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782676319A SU718946A1 (en) | 1978-10-02 | 1978-10-02 | Sound amplification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782676319A SU718946A1 (en) | 1978-10-02 | 1978-10-02 | Sound amplification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU718946A1 true SU718946A1 (en) | 1980-02-29 |
Family
ID=20790233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU782676319A SU718946A1 (en) | 1978-10-02 | 1978-10-02 | Sound amplification device |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU718946A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4790018A (en) * | 1987-02-11 | 1988-12-06 | Argosy Electronics | Frequency selection circuit for hearing aids |
-
1978
- 1978-10-02 SU SU782676319A patent/SU718946A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4790018A (en) * | 1987-02-11 | 1988-12-06 | Argosy Electronics | Frequency selection circuit for hearing aids |
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