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ã鏿å³ãå³ï¼Provided is a low-cost USB-compatible speaker system with a built-in amplifier that does not require a dedicated power source, can achieve a sufficient sound volume and low-frequency reproduction even in a small and thin shape, and can achieve a sufficient sound spread.
An audio signal is amplified with low power consumption and high efficiency by a D class amplifier driven by a power source supplied via a USB port, and a 3D speaker system including a left and right channel speaker and a subwoofer speaker. By adopting a configuration, low-frequency reproduction is possible, and by mounting a pseudo surround circuit, a sufficient stereo feeling can be obtained even though the speaker device is small and thin.
[Selection] Figure 1
æ¬çºæã¯ãã¢ã³ããå èµããã¢ã³ãå èµã¹ãã¼ã«è£ ç½®ãç¹ã«ãã½ã³ã³ãã®ä»ã®æ©å¨ã®ï¼µï¼³ï¼¢ç«¯åã«æ¥ç¶ãã¦ä½¿ç¨ãããUSB対å¿ã¢ã³ãå èµã¹ãã¼ã«è£ ç½®ã«é¢ãããã®ã§ããã The present invention relates to a speaker device with a built-in amplifier and a speaker device with a built-in USB-compatible amplifier that is used by connecting to a USB terminal of a personal computer or other equipment.
çä½å ã«ã¹ãã¼ã«åã³ãã®ã¹ãã¼ã«ãé§åããããã®ã¢ã³ããä¸ä½çã«åç´ãããã¢ã¯ãã£ãã¹ãã¼ã«ã¨å¼ã°ããã¢ã³ãå èµã¹ãã¼ã«è£ ç½®ãåå¨ãããè¿å¹´ãã½ã³ã³ã®ãããªæ å ±æ©å¨ã®æè¡é©æ°ãããã¾ããããã®ç¨éã使ç¨å½¢æ ã夿§åã®ä¸éããã©ã£ã¦ãããé³å£°ã«ã¤ãã¦ãåæ§ã«å¤æ§ãªãã¼ãºã«å¯¾å¿ãããã®ãæ±ãããã¦ããã There is a speaker device with a built-in amplifier called an active speaker in which a speaker and an amplifier for driving the speaker are integrally housed in a housing. In recent years, technological innovations in information devices such as personal computers have been remarkable, and their uses and forms of use have been diversifying, and there has been a demand for audio corresponding to various needs as well.
ãã½ã³ã³çã®ããããã³ç«¯åãUSB端åã«æ¥ç¶ããã¢ã³ãå èµå¤é¨ã¹ãã¼ã«è£ ç½®ããããæã¡éã³ãæ¥ç¶ã容æã§å¥ã®æ©å¨ã¨ã®ã¤ãªãæããç°¡åã«ã§ããã·ã¹ãã ã®å¤æ´ãæ¡å¼µã«ä¾¿å©ã§ãããããããªãããå èµã¢ã³ããé§åããããã«ã¯ãå¥é黿ºãä¾çµ¦ããå¿ è¦ãããããã®ããã«ç§»è¨ã®éã«ã¯é»æºã¢ããã¿çãä¸ç·ã«æã¡éã°ãªããã°ãªããªãä¸ä¾¿ãããããã¾ãè¨ç½®ã®éã«æ¥ç¶ã³ã¼ããéªéã«ãªãã¨ããåé¡ããã£ãã There is an external speaker device with built-in amplifier that connects to a headphone terminal such as a personal computer or a USB terminal, and it is easy to carry and connect, and can be easily connected to another device, which is convenient for system changes and expansions. However, in order to drive the built-in amplifier, it is necessary to supply a separate power supply. For this reason, there is an inconvenience that the power adapter must be carried along with the relocation. Had the problem of getting in the way.
ç¹è¨±ç¬¬ï¼ï¼ï¼ï¼ï¼ï¼ï¼å·å ¬å ±ã«ã¯ãUSBãã¼ããä»ãã¦ä¾çµ¦ããã黿ºã«ããåä½ããã¹ãã¼ã«é§åã¢ã³ããåããããã«ããé«å¹çã¹ãã¼ã«ãé§åããUSB対å¿ã¹ãã¼ã«é§åã·ã¹ãã ãé示ããã¦ããããã®ï¼µï¼³ï¼¢å¯¾å¿ã¹ãã¼ã«é§åã·ã¹ãã ã«ããã°ãå°ç¨é»æºã«é ¼ããã«ï¼µï¼³ï¼¢ãã¼ãããä¾çµ¦ããã黿ºã®ã¿ã§ãã¹ãã¼ã«ãé§åãããã¨ãã§ãããã®ã§ããããååãªé³é¿åçãè¡ãããã«ã¯ãé«å¹çã®ã¹ãã¼ã«ãç¨ããªããã°ãªãããã³ã¹ãé«ã¨ãªãåé¡ãããã Japanese Patent No. 3457596 discloses a USB-compatible speaker drive system that includes a speaker drive amplifier that is operated by a power source supplied via a USB port, thereby driving a high-efficiency speaker. According to this USB-compatible speaker driving system, the speaker can be driven only by the power supplied from the USB port without relying on a dedicated power source. However, in order to perform sufficient sound reproduction, it is highly efficient. There is a problem of increasing the cost.
ã¾ããï¼ã¤ã®ã¹ãã¼ã«ãåãã¹ãã¬ãªåçãã§ããããã«æ§æããã¦ããããä½ååçãååã¨ã¯ããããããã«ãã½ã³ã³å¨è¾ºçã«ä»£è¡¨ãããè¨ç½®å ´æã®å¶ç´ããæºå¸¯ã®å©ä¾¿æ§ã®ç¹ãããã¢ã³ããã¹ãã¼ã«ãåç´ããçä½ã¯å¿
ç¶çã«å°åãèåã®ãã®ã¨ãªãã®ã§ãé³ã®æ¡ãããååã«å¾ãããªãã¨ããåé¡ãä½µãæã£ã¦ããã
ç¹è¨±ç¬¬ï¼ï¼ï¼ï¼ï¼ï¼ï¼å· In addition, although it is configured to have stereo playback with two speakers, it cannot be said that low-frequency playback is sufficient, and in addition to restrictions on installation locations, such as the surroundings of personal computers, and the convenience of carrying Since the housing for housing the amplifier and the speaker is inevitably small and thin, there is a problem that the sound cannot be sufficiently spread.
Japanese Patent No. 3457596
æ¬çºæã解決ãããã¨ãã課é¡ã¯ãå°ç¨ã®é»æºãå¿ è¦ã¨ããããã¤ç¹å¥ãªæ§é ã®é«å¹çã¹ãã¼ã«ãç¨ãããã¨ãªããæ±ç¨ã®ã¹ãã¼ã«ãç¨ãã¦ãååãªé³éã確ä¿ã§ããä½åã¾ã§åçå¯è½ã§ãååãªã¹ãã¬ãªæã®ããé³ã®æ¡ãããå¾ããã¨ãã§ããUSB対å¿ã¢ã³ãå èµã¹ãã¼ã«è£ ç½®ãå®ä¾¡ã«æä¾ãããã¨ã§ããã The problem to be solved by the present invention is that a dedicated power source is not required, and a high-efficiency speaker with a special structure is used, so that a sufficient volume can be secured even with a general-purpose speaker, and reproduction is possible down to low frequencies. Therefore, it is to provide a speaker device with a built-in USB-compatible amplifier that can obtain a sound spread with a sufficient stereo feeling at low cost.
ä¸è¨èª²é¡ã解決ãããããè«æ±é ï¼ã«ä¿ãæ¬çºæã®ï¼µï¼³ï¼¢å¯¾å¿ã¢ã³ãå èµã¹ãã¼ã«è£ ç½®ã¯ãUSBãã¼ãããå ¥åãããé³å£°ä¿¡å·ãUSBãã¼ãããä¾çµ¦ããã黿ºã«ãã£ã¦å¢å¹ ããDã¯ã©ã¹ã¢ã³ãã¨ãå·¦ãã£ã³ãã«ç¨ã¹ãã¼ã«ã¨ãå³ãã£ã³ãã«ç¨ã¹ãã¼ã«ã¨ããµãã¦ã¼ãã¡ç¨ã¹ãã¼ã«ã¨ãåãããã¨ãç¹å¾´ã¨ãããã®ã§ããã In order to solve the above problems, a speaker device with a built-in USB-compatible amplifier according to a first aspect of the present invention includes a D-class amplifier that amplifies an audio signal input from a USB port by a power source supplied from the USB port, A speaker, a right channel speaker, and a subwoofer speaker are provided.
è«æ±é ï¼ã«è¨è¼ã®æ¬çºæã¯ãè«æ±é ï¼ã«è¨è¼ã®ï¼µï¼³ï¼¢å¯¾å¿ã¢ã³ãå èµã¹ãã¼ã«è£ ç½®ã®æ§æã«å ãã¦ãããã«æ¬ä¼¼ãµã©ã¦ã³ãåè·¯ãåãã¦ãªããã¨ãç¹å¾´ã¨ãããã®ã§ããã According to a second aspect of the present invention, in addition to the configuration of the speaker device with a built-in USB-compatible amplifier according to the first aspect, a pseudo surround circuit is further provided.
æ¬çºæã®ï¼µï¼³ï¼¢å¯¾å¿ã¢ã³ãå èµã¹ãã¼ã«è£ ç½®ã¯ãUSBãã¼ããä»ãã¦ä¾çµ¦ããã黿ºã«ãã£ã¦é³å£°ä¿¡å·ãå¢å¹ ããDã¯ã©ã¹ã¢ã³ããè¨ãã¦ã使¶è²»é»ååãã¦ããã®ã§ãå¥éå°ç¨é»æºãå¿ è¦ã¨ãããã¾ãç¹æ®ãªæ§é ã®é«å¹çã¹ãã¼ã«ãç¨ããªãã¨ããå®ç¨ä¸ååãªé³éã®åçãã³ã¹ãé«ãæããã¨ãªãéæã§ããã The speaker device with a built-in USB-compatible amplifier according to the present invention is provided with a D-class amplifier that amplifies an audio signal by a power source supplied via a USB port, thereby reducing power consumption. Even without using a high-efficiency speaker with a special structure, it is possible to achieve practically sufficient volume reproduction without incurring high costs.
ã¾ããæ¬çºæã®ï¼µï¼³ï¼¢å¯¾å¿ã¢ã³ãå èµã¹ãã¼ã«è£ ç½®ã¯ãå·¦å³ã®ã¹ãã¼ã«ã«å ãã¦ãµãã¦ã¼ãã¡ç¨ã®ã¹ãã¼ã«ãè¨ããï¼ï¼¤ã¹ãã¼ã«ã·ã¹ãã ã®æ§æã¨ããã®ã§ãå°åå½¢ç¶ã§ãã£ã¦ãä½åã¾ã§åçå¯è½ã¨ãªã£ãã In addition, the USB-compatible speaker device with a built-in amplifier according to the present invention is provided with a subwoofer speaker in addition to the left and right speakers, and has a configuration of a 3D speaker system.
ããã«ãæ¬çºæã®ï¼µï¼³ï¼¢å¯¾å¿ã¢ã³ãå èµã¹ãã¼ã«è£ ç½®ã¯ãæ¬ä¼¼ãµã©ã¦ã³ãåè·¯ãåãããã¨ã«ãããå°åãèåå½¢ç¶ã§ãã£ã¦ãååãªã¹ãã¬ãªæãå¾ãããé³ã®æ¡ãããå®ç¾ãããã¨ãã§ããã Furthermore, the speaker device with a built-in USB-compatible amplifier according to the present invention includes a pseudo-surround circuit, so that it is possible to achieve sound expansion that can provide a sufficient stereo feeling even if it is small and thin.
USBã±ã¼ãã«ãä»ãã¦ãã½ã³ã³æ¬ä½çã®ï¼µï¼³ï¼¢ãã¼ãã¨æ¥ç¶ããUSBã¤ã³ã¿ã¼ãã§ã¼ã¹ï¼å¾©èª¿å¦çåè·¯ããã£ã«ã¿åè·¯åã³ï¼ã¤ã®ï¼¤ã¯ã©ã¹ã¢ã³ãã¨ãã®ï¼¤ã¯ã©ã¹ã¢ã³ãã«ãã£ã¦é§åãããå·¦å³åãã£ã³ãã«ç¨ã¹ãã¼ã«åã³ãµãã¦ã¼ãã¡ç¨ã¹ãã¼ã«ãï¼ã¤ã®çä½ã«è¨ããæ§æã«ãããä¸è¨ãã課é¡ã解決ããUSB対å¿ã¢ã³ãå èµã¹ãã¼ã«è£ ç½®ãå®ç¾ããã A USB interface / demodulation processing circuit, a filter circuit, three D class amplifiers connected to a USB port of a personal computer main body or the like via a USB cable, a left channel speaker and a subwoofer speaker driven by the D class amplifier A speaker device with a built-in USB compatible amplifier that solves the above-described problems has been realized by the configuration provided in the housing.
å³ï¼ã¯ãæ¬çºæè£ ç½®ã®ç¬¬ï¼å®æ½ä¾ã示ããããã¯ãã¤ã¢ã°ã©ã ã§ãããå·¦å³åãã£ã³ãã«ç¨ã¹ãã¼ã«åã³ãµãã¦ã¼ãã¡ç¨ã¹ãã¼ã«ãé§åããã¢ã³ãã¨ãã¦ãUSBãã¼ãããä¾çµ¦ããã黿ºã®ã¿ã§é«å¹çã®å¢å¹ ãè¡ãããã«ãé«å¹çã®ï¼¤ã¯ã©ã¹ã¢ã³ããæè¼ã使¶è²»é»ååãããã¾ããï¼ã¤ã®ã¹ãã¼ã«ã«ããï¼ï¼¤ã¹ãã¼ã«ã·ã¹ãã ãæ§æããä½åã¾ã§åçã§ããæ§æã¨ããã FIG. 1 is a block diagram showing a first embodiment of the apparatus of the present invention. As an amplifier for driving the left and right channel speakers and the subwoofer speaker, a highly efficient D class amplifier is mounted to reduce power consumption in order to perform highly efficient amplification only with the power supplied from the USB port. In addition, a 3D speaker system is configured by three speakers, and a configuration capable of reproducing to low frequencies is adopted.
å³ï¼ã¯æ¬çºæè£ ç½®ã®ç¬¬ï¼å®æ½ä¾ã示ããããã¯ãã¤ã¢ã°ã©ã ã§ããããã®ä¾ã«ããã¦ã第ï¼å®æ½ä¾ã¨åæ§ã®é«å¹çã®ï¼¤ã¯ã©ã¹ã¢ã³ããæè¼ãã¦ããããããã«å·¦å³åãã£ã³ãã«ç¨ã®ï¼¤ã¯ã©ã¹ã¢ã³ãã®åã«ã¯æ¬ä¼¼ãµã©ã¦ã³ãåè·¯ãè¨ãããã¦ãããè£ ç½®ãå°ååããããã«ãµãã¦ã¼ãã¡ã§ä¸ä½åã¾ã§åçããå¿ è¦ããããããã®ããã«é³åãéä¸ãã¹ãã¬ãªæãå¾ã«ããã¨ããæ¬ ç¹ãããã®æ¬ä¼¼ãµã©ã¦ã³ãåè·¯ãå èµããæ§æã«ãã解決ããé³ã®æ¡ããã確ä¿ãã¦ããã FIG. 2 is a block diagram showing a second embodiment of the apparatus of the present invention. In this example as well, a high-efficiency D class amplifier similar to that of the first embodiment is mounted, but a pseudo surround circuit is provided in front of the D class amplifier for each of the left and right channels. In order to reduce the size of the device, it is necessary to reproduce the sound from the mid-low range with a subwoofer. Is secured.
ãã½ã³ã³ã®ï¼µï¼³ï¼¢ãã¼ãã«æ¥ç¶ãã¦ã¹ãã¬ãªæã®ããé«å質ã®é³æ¥½åçãããç¨éã«å¥½é©ã«å©ç¨ãå¾ãã It can be suitably used for the purpose of reproducing high-quality music with a stereo feeling by connecting to a USB port of a personal computer.
宿½ä¾ï¼ã®æ§æã示ããããã¯ãã¤ã¢ã°ã©ã ã§ããã1 is a block diagram showing a configuration of Example 1. 宿½ä¾ï¼ã®æ§æã示ããããã¯ãã¤ã¢ã°ã©ã ã§ããã6 is a block diagram showing a configuration of Example 2.
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ï¼ï¼ï¼³ ãµãã¦ã¼ãã¡ç¨ã¹ãã¼ã« DESCRIPTION OF SYMBOLS 1 Speaker apparatus with built-in USB compatible amplifier 2 Personal computer main body 3, 4 USB connector 5 USB interface / demodulation processing circuits 6, 7
Filter circuit 8 Pseudo surround circuit 9L, 9R, 9SD Class D amplifier 10L Left channel speaker 10R Right channel speaker 10S Subwoofer speaker
USBãã¼ãããå ¥åãããé³å£°ä¿¡å·ãUSBãã¼ãããä¾çµ¦ããã黿ºã«ãã£ã¦å¢å¹ ããDã¯ã©ã¹ã¢ã³ãã¨ãå·¦ãã£ã³ãã«ç¨ã¹ãã¼ã«ã¨ãå³ãã£ã³ãã«ç¨ã¹ãã¼ã«ã¨ããµãã¦ã¼ãã¡ç¨ã¹ãã¼ã«ã¨ãåãããã¨ãç¹å¾´ã¨ããUSB対å¿ã¢ã³ãå èµã¹ãã¼ã«è£ ç½®ã   USB compatible, comprising a D-class amplifier that amplifies an audio signal input from a USB port by a power source supplied from the USB port, a left channel speaker, a right channel speaker, and a subwoofer speaker Amplifier built-in speaker device. è«æ±é 1ã®ã¹ãã¼ã«è£ ç½®ã¯ãæ¬ä¼¼ãµã©ã¦ã³ãåè·¯ãåãã¦ãªããã¨ãç¹å¾´ã¨ããUSB対å¿ã¢ã³ãå èµã¹ãã¼ã«è£ ç½®ã   2. The speaker device with a built-in USB-compatible amplifier, wherein the speaker device according to claim 1 includes a pseudo surround circuit.
JP2004026254A 2004-02-03 2004-02-03 USB compatible amplifier built-in speaker device Pending JP2005223372A (en) Priority Applications (1) Application Number Priority Date Filing Date Title JP2004026254A JP2005223372A (en) 2004-02-03 2004-02-03 USB compatible amplifier built-in speaker device Applications Claiming Priority (1) Application Number Priority Date Filing Date Title JP2004026254A JP2005223372A (en) 2004-02-03 2004-02-03 USB compatible amplifier built-in speaker device Publications (1) Family ID=34998707 Family Applications (1) Application Number Title Priority Date Filing Date JP2004026254A Pending JP2005223372A (en) 2004-02-03 2004-02-03 USB compatible amplifier built-in speaker device Country Status (1) Cited By (4) * Cited by examiner, â Cited by third party Publication number Priority date Publication date Assignee Title JP2012505616A (en) * 2007-10-13 2012-03-01 ã·ã§ã³ãã§ã³ ãã¥ã¼ ã¨ã¬ã¯ããªã㯠ãµã¤ã¨ã³ã¹ ã¢ã³ã ãã¯ããã¸ã¼ ã«ã³ããã¼ ãªãããã Multimedia acoustic system with digital interface of audio frequency US8879754B2 (en) * 2007-02-08 2014-11-04 Actiwave Ab Sound reproducing system with superimposed digital signal KR101618911B1 (en) 2008-10-13 2016-05-09 ìì ë´ ì¼ë í¸ë¦ ì¬ì´ì¸ì¤ ì¤ë í í¬ëë¡ì§ ì»´í¼ë, 리미í°ë Multimedia acoustics system having audio frequency digital interface CN112188364A (en) * 2019-07-04 2021-01-05 ç¥é¼ç§æè¡ä»½æéå ¬å¸ A one-to-many wireless speaker speaker deviceRetroSearch is an open source project built by @garambo | Open a GitHub Issue
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