Multimedia audio system with audio digital interface

A sound system and digital interface technology, applied in the field of multimedia sound system, can solve the problem that the quality of electro-acoustic restoration is difficult to achieve

Inactive Publication Date: 2009-04-22
张凡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Third, small coaxial speakers and full-range speakers with "tweeter cup" diaphragms also need to add energy-consuming crossover networks and active power amplifiers to work normally, and their electroacoustic reproduction quality is difficult to meet people's expectations. expected level
[0019] Fourth, in fact, USB audio often has many recognized advantages: 1) Due to the use of an external USB sound card, it can completely get rid of interference sources such as strong electromagnetic waves in the computer case; 2) Decoding based on PCM/PWM audio digital technology Encoder and Class D amplifier or Class T amplifier ba

Method used

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  • Multimedia audio system with audio digital interface

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Embodiment Construction

[0081] Fig. 1 shows the longitudinal sectional view of the loudspeaker of Embodiment 2 of the present inventor's existing patents CN200610020317.7 and CN200620033128.9.

[0082] This is a loudspeaker with double coils and double magnetic gaps. The upper pole plate 203A and the lower pole plate 203B are circular flat plates coaxially installed and symmetrically arranged. The neodymium iron boron magnet 202 is a magnetic A ring-shaped magnet that is well-proportioned, coaxially installed and matched with the upper pole plate and the lower pole plate and is magnetized and polarized in the thickness direction. Two coaxial equiaxed annular magnetic gaps 210A and 210B are formed between the vertical peripheral surfaces of the magnet 202, and the bisector X---X axis of the 1 / 2 axial height of the magnet 202 is the horizontal axis of symmetry, and the upper pole The central axis of the central shaft hole of the plate and the lower pole plate is a vertical symmetry axis, and the double...

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Abstract

The invention relates to a multimedia sound system with a musical audio digital interface. The multimedia sound system comprises at least a USB/IEEE1394 interface, a USB/IEEE1394 external sound card, a group of D-typed or T-typed audio power amplifier chips or a group of control circuits or microprocessor chips that are matched with the sound card and the power amplifier, a PCB plate and at least a pair of dual channel sound boxes. Each sound box is at least provided with a full range speaker with double coils and double magnetic gaps or with a plurality of coils and a plurality of magnetic gaps with resistance loading property and approximate resistance loading property, wherein, the aperture is less than 7 inches, and only one conical single vibrating diaphragm is configured in the full range speaker; therefore, various high-fidelity or monitoring multimedia sound systems is formed, wherein, the working voltage is equal to or less than 5.25V and the output power is equal to or more than 2*1W under 3-4 ohm of loading.

Description

technical field [0001] The invention relates to a multimedia audio system with an audio digital interface, in particular to a multimedia audio system with a USB external sound card or an IEEE1394 external sound card and directly powered by a computer or a CD game machine, belonging to the electrical audio field. Background technique [0002] A multimedia sound system with an audio digital interface, including a multimedia sound system with a USB external sound card or an IEEE1394 external sound card, is a prior art product. [0003] For example, Microsoft just released the DDS80 type USB audio system powered by an external power supply as early as the end of last century. [0004] The DGX320 audio system launched by PHILIPS in 2006 has a 1-inch tweeter, a 2-inch full-range speaker and a passive bass radiator in each speaker, and the power is provided by the USB interface of the PC. The output power is 2×1W, the frequency response range is 100Hz~20KHz. [0005] In March 200...

Claims

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Application Information

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IPC IPC(8): H04S7/00H04S3/00
Inventor 张凡
Owner 张凡
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