JPH0158690B2 - - Google Patents
Info
- Publication number
- JPH0158690B2 JPH0158690B2 JP13549781A JP13549781A JPH0158690B2 JP H0158690 B2 JPH0158690 B2 JP H0158690B2 JP 13549781 A JP13549781 A JP 13549781A JP 13549781 A JP13549781 A JP 13549781A JP H0158690 B2 JPH0158690 B2 JP H0158690B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- external noise
- level
- detection circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 47
- 230000010354 integration Effects 0.000 claims description 28
- 230000000873 masking effect Effects 0.000 claims description 16
- 230000005236 sound signal Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 230000000116 mitigating effect Effects 0.000 claims description 6
- 230000007423 decrease Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 2
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
Landscapes
- Control Of Amplification And Gain Control (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13549781A JPS5838010A (ja) | 1981-08-31 | 1981-08-31 | 自動音量調整装置のマスキング緩和方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13549781A JPS5838010A (ja) | 1981-08-31 | 1981-08-31 | 自動音量調整装置のマスキング緩和方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5838010A JPS5838010A (ja) | 1983-03-05 |
| JPH0158690B2 true JPH0158690B2 (enrdf_load_stackoverflow) | 1989-12-13 |
Family
ID=15153118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13549781A Granted JPS5838010A (ja) | 1981-08-31 | 1981-08-31 | 自動音量調整装置のマスキング緩和方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5838010A (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3482123B2 (ja) | 1998-04-27 | 2003-12-22 | 富士通テン株式会社 | 音響装置 |
| JP6401914B2 (ja) * | 2014-02-05 | 2018-10-10 | 東日本旅客鉄道株式会社 | 音量制御装置及び駅ホームの放送システム |
-
1981
- 1981-08-31 JP JP13549781A patent/JPS5838010A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5838010A (ja) | 1983-03-05 |
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