JP2010045481A5 - - Google Patents
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- JP2010045481A5 JP2010045481A5 JP2008206708A JP2008206708A JP2010045481A5 JP 2010045481 A5 JP2010045481 A5 JP 2010045481A5 JP 2008206708 A JP2008206708 A JP 2008206708A JP 2008206708 A JP2008206708 A JP 2008206708A JP 2010045481 A5 JP2010045481 A5 JP 2010045481A5
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- Prior art keywords
- unit
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- signal
- channel
- threshold value
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- 230000005236 sound signal Effects 0.000 claims 12
- 230000003321 amplification Effects 0.000 claims 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims 5
- 241000023320 Luma <angiosperm> Species 0.000 claims 1
Claims (6)
前記増幅部により増幅された前記複数のチャンネルの音声信号を複数のスピーカに出力するスピーカターミナル部と、
前記増幅部により増幅された前記複数のチャンネルの音声信号の交流電圧をそれぞれ直流電圧に変換する整流部と、
前記整流部により得た前記複数のチャンネルの直流電圧から前記増幅部が前記スピーカターミナル部を経由してスピーカへ供給する電力の総和を計算し、その電力の総和があらかじめ定められた閾値を超えている場合に前記増幅部に供給する各チャンネルの音声信号のレベルを減衰させるための制御信号を出力する制御部と、
前記制御部から入力された制御信号に基づいて、前記増幅部に供給する各チャンネルの音声信号のレベルを減衰させる信号レベル減衰部と
を備えることを特徴とするマルチチャンネルパワーアンプ。 An amplifier for amplifying the audio signals of a plurality of channels,
A speaker terminal unit that outputs audio signals of the plurality of channels amplified by the amplification unit to a plurality of speakers;
A rectifying unit that converts the AC voltage of the audio signals of the plurality of channels amplified by the amplifying unit into a DC voltage, and
The sum of the power supplied from the DC voltage of the plurality of channels obtained by the rectifier to the speaker via the speaker terminal unit is calculated by the amplifying unit, and the sum of the power exceeds a predetermined threshold value. A control unit for outputting a control signal for attenuating the level of the audio signal of each channel supplied to the amplification unit when
A multi-channel power amplifier comprising: a signal level attenuating unit for attenuating a level of an audio signal of each channel supplied to the amplifying unit based on a control signal input from the control unit.
前記マルチチャンネルパワーアンプから供給される音声信号を再生する複数のスピーカとを備え、
前記マルチチャンネルパワーアンプは、
前記複数のチャンネルの音声信号をそれぞれ増幅する増幅部と、
前記増幅部により増幅された前記複数のチャンネルの音声信号をスピーカに出力するスピーカターミナル部と、
前記増幅部により増幅された前記複数のチャンネルの音声信号の交流電圧をそれぞれ直流電圧に変換する整流部と、
前記整流部により得た前記複数のチャンネルの直流電圧と前記複数のスピーカのインピーダンスを用いて前記複数の増幅部が前記スピーカへ供給する電力の総和を計算し、その電力の総和があらかじめ定められた閾値を超えている場合に前記増幅部に供給する各チャンネルの音声信号のレベルを減衰させるための制御信号を出力する制御部と、
前記制御部から入力された制御信号に基づいて、前記増幅部に供給する各チャンネルの音声信号のレベルを減衰させる信号レベル減衰部と
を備えることを特徴とするマルチチャンネルオーディオ装置。 Luma Multichannel power amplifier amplifying the audio signals of a plurality of channels,
A plurality of speakers for reproducing audio signals supplied from the multi-channel power amplifier,
The multi-channel power amplifier is
And amplification unit you amplifying said plurality of channels of audio signals, respectively,
A speaker terminal unit that outputs the audio signals of the plurality of channels amplified by the amplification unit to a speaker;
A rectifying unit that converts the AC voltage of the audio signals of the plurality of channels amplified by the amplifying unit into a DC voltage, and
Using the DC voltages of the plurality of channels obtained by the rectifying unit and the impedances of the plurality of speakers, the sum of the power supplied to the speakers by the plurality of amplifying units is calculated, and the sum of the powers is predetermined. A control unit that outputs a control signal for attenuating the level of the audio signal of each channel supplied to the amplification unit when a threshold value is exceeded;
A multi-channel audio device comprising: a signal level attenuating unit for attenuating a level of an audio signal of each channel supplied to the amplifying unit based on a control signal input from the control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008206708A JP4998406B2 (en) | 2008-08-11 | 2008-08-11 | Multi-channel power amplifier and multi-channel audio device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008206708A JP4998406B2 (en) | 2008-08-11 | 2008-08-11 | Multi-channel power amplifier and multi-channel audio device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2010045481A JP2010045481A (en) | 2010-02-25 |
| JP2010045481A5 true JP2010045481A5 (en) | 2010-11-18 |
| JP4998406B2 JP4998406B2 (en) | 2012-08-15 |
Family
ID=42016522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008206708A Active JP4998406B2 (en) | 2008-08-11 | 2008-08-11 | Multi-channel power amplifier and multi-channel audio device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4998406B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9119159B2 (en) * | 2011-01-10 | 2015-08-25 | Qualcomm Incorporated | Battery power monitoring and audio signal attenuation |
| JP5849677B2 (en) | 2011-12-15 | 2016-02-03 | 船井電機株式会社 | Audio output device |
| JP6241021B2 (en) * | 2012-09-24 | 2017-12-06 | 株式会社三洋物産 | Game machine |
| JP6286931B2 (en) * | 2013-08-20 | 2018-03-07 | 株式会社三洋物産 | Game machine |
| JP6286929B2 (en) * | 2013-08-20 | 2018-03-07 | 株式会社三洋物産 | Game machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3297713B2 (en) * | 1994-12-08 | 2002-07-02 | シャープ株式会社 | Audio signal amplifier and audio signal level detection circuit |
| JP2003309437A (en) * | 2002-04-12 | 2003-10-31 | Yamaha Corp | Circuit protection apparatus for audio amplifier, and audio amplifier |
| JP2005159635A (en) * | 2003-11-25 | 2005-06-16 | Sony Corp | Power amplifier circuit |
| JP2006253744A (en) * | 2005-03-08 | 2006-09-21 | Alpine Electronics Inc | Audio output control apparatus |
-
2008
- 2008-08-11 JP JP2008206708A patent/JP4998406B2/en active Active
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