CN1242551C - Portable multi-channel amplifier - Google Patents

Abstract

A portable multichannel amplifier is provided. The portable multichannel amplifier includes: an input/output adapter comprising: a plurality of cable connectors for connecting to an external audio system for reproducing audio signals; a means for outputting the audio signals as sound via cables; and a circuit connector for connecting the cable connectors to external circuitry outside the input/output adapter; and a body comprising: a connection portion into which the circuit connectors of the input/output adapter are inserted, and which is detachable from the circuit connectors; and a processing circuit for processing the audio signals input from the external audio system through the connection portion into multichannel signals, and outputting the multichannel signals through the connection portion to the circuit connectors.

Description

Portable Multi-Channel Amplifier

technical field

The invention relates to an amplifier, and especially designs a portable multi-channel amplifier.

Background technique

Amplifiers are classified into discrete amplifiers, integrated amplifiers and receivers. A discrete amplifier includes a power amplifier for amplifying sound and transmitting it to a speaker, and a preamplifier for selecting a sound source. Integrated amplifiers represent amplifiers in which a power amplifier is combined with a preamplifier. A receiver represents an integrated amplifier with a tuner.

The preamplifier is called a control amplifier, it amplifies the weak signal output from the amplifier or the cartridge of the phonograph, or receives and controls the output signal from the tuner, cassette player, compact disc player, or digital tape recorder. signal and transmits the signal to the power amplifier.

Recently announced amplifiers are capable of producing a sound stage effect for beautiful and realistic sound.

The sound field of an amplifier can be called a special sound reverberation. Divide sound into those coming directly from an instrument or speaker and those reflected by other objects scattered around.

Determining whether an echo is beautiful, that is, determining whether a sound field is good or bad depends on the direction in which the reflected sound is heard, the material of the reflected sound, or how slow the transmission of the reflected sound is compared to the direct sound.

Usually, concert halls or theaters are designed to be suitable for holding concerts or showing movies. Therefore, unless there are extremely special circumstances, their sound fields are generally not bad.

However, residential spaces are not designed for music or movies, so even with good sound systems installed in residential spaces, their soundstages are often not ideal.

Specifically, the size of the living room matters for the soundstage. In this case, a good sound field can be achieved using a digital signal processor.

Recently, a portable amplifier having a sound field effect, which is realized using a digital signal processor, and a headphone for listening to the generated multi-channel audio signal have been developed.

Contents of the invention

SUMMARY OF THE INVENTION To solve the above-mentioned problems, an object of the present invention is to provide a portable multi-channel amplifier which has separate input and output terminals so as to be conveniently carried and used at home with a speaker.

Therefore, a portable multi-channel amplifier is provided to achieve the above objects. A portable multi-channel amplifier comprising:

An input/output adapter comprising: a plurality of cable connectors for connecting an external audio system for reproducing audio signals; a device for outputting audio signals as sound through cables; and a device for connecting the cables a circuit connector that connects the connector to an external circuit outside the input/output adapter; and

a main body including: a connection part into which the circuit connector of the input/output adapter is inserted and which is detachable from the circuit connector; The input audio signal is processed into a multi-channel signal, and the multi-channel signal is output to the circuit connector through the connection part.

The main body includes: a digital signal processor for receiving audio signals and converting the audio signals into stereo surround sound with Dolby Pro-logic, THX, AC-3, or DTS formats; and a D/A converter for Convert the digital signal output by the digital signal processor into an analog signal.

The DSP further includes a Dolby Pro-Logic II function that converts 2-channel stereo and 4-channel stereo pro-Logic surround into 5.1-channel surround.

The digital signal processor further includes an ambient sound effect (EAX) function, which is an API and is used by game developers to create realistic sound effects in games, and when caves, waterways, halls, etc. are constructed in games, it is pure sound Effect and call the API and set the relevant parameters.

According to another aspect of the present invention, a portable multi-channel amplifier includes:

a docking station comprising: a connection support portion; and a plurality of cable connector portions directly connected to the connection support portion so as to connect to an external audio system and a speaker system via cables; and

a main body including: a connection part inserted into the connection support part; and a processing circuit which processes an audio signal input by an external audio system through the connection part into a multi-channel signal, and passes the multi-channel signal through the connection The part is output to the connection support part;

Wherein the main body is installed on the extension base and supported by the extension base.

The docking station further includes a power amplifier for amplifying a signal output from the main body mounted on the docking station and outputting the signal through the cable connector.

The docking station further includes a voltage supply device for supplying voltage to the main body through the connecting portion of the main body.

The docking station includes a charging device for supplementing the voltage provided by the voltage supply device.

The voltage supply device uses DC-in to provide power.

The voltage supply device uses the USB port to provide power.

Description of drawings

1 is a perspective view of a portable multi-channel amplifier according to a first embodiment of the present invention;

2 is a perspective view of a portable multi-channel amplifier according to a second embodiment of the present invention;

Fig. 3 is the block diagram of the internal structure of the main body of portable multi-channel amplifier according to the present invention; And

4 is a perspective view of the main body of the portable multi-channel amplifier configured on the docking station.

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a portable multi-channel amplifier according to a first embodiment of the present invention. The portable multi-channel amplifier includes a main body 110 and an input/output adapter 120 .

The main body 110 amplifies a weak signal output from an amplifier or a cartridge of a phono, or receives various audio signals output from a tuner, a cassette player, a compact disk player, or a digital tape recorder and outputs multi-channel signals. The main body 110 is fabricated on both sides of a substrate using digital signal processor (DSP) technology, and has a battery 130 therein.

The main body 110 includes a connection portion 113 and a processing circuit (not shown). The circuit connector 123 of the input/output adapter 120 is inserted into the connection part 113 . The connection part 113 can be separated from the connector 123 (133). The processing circuit processes the audio signal input by the external audio system through the connection part 113 into a multi-channel signal, and outputs the multi-channel signal to the outside through the connection part 113 .

The input/output adapter 120 coupled with the main body 110 includes a plurality of input terminals D and A, and a plurality of output terminals F and R. The input terminals D and A receive weak signals output by a loudspeaker or the cartridge of a turntable, or signals output by a tuner, cassette player, compact disk player, or digital tape recorder. The output terminals F and R output received signals.

The input/output adapter 120 includes a plurality of cable connectors (ie, input/output terminals D, A, F, and R) and a circuit connector 123 . The cable connectors D, A, F and R are respectively connected to cables. The circuit connector 123 connects the cable connector with an external circuit.

Fig. 2 is a perspective view of a portable multi-channel amplifier according to a second embodiment of the present invention. Referring to FIG. 2 , the input/output terminals D, A, F and R of the input/output adapter 130 have a rectangular shape in order to reduce the size of the input/output adapter 130 .

FIG. 3 is a block diagram of the internal structure of the main body of the multi-channel amplifier according to the present invention. The main body consists of Toslink 210 optical pocket plug, an analog to digital (A/D) converter 220, a digital signal processor 230, and a digital to analog (D/A) converter 240.

Toslink 210 receives digital signals and transmits the digital signals to digital signal processor 230 .

The A/D converter 220 converts an analog signal into a digital signal and transmits the digital signal to a digital signal processor 230 .

The digital signal processor 230 receives the digital signal output by the Toslink 210 and the A/D converter 220, and converts the digital signal into three-dimensional surround sound, such as EAX, Dolby Pro-Logic, Dolby Pro-LogicII, THX, AC- 3. Sound in DS, DD, DTS and other formats.

Ambient Audio (EAX) is an Application Programming Interface (API) used by game developers to create realistic sound effects in games. When there are caves, waterways, halls, etc. in the game, call the API for sound effects and set related parameters.

In games that support EAX, use the EAX API to handle more realistic sound effects. If the game does not support EAX, then the game uses the EAX preset to use EAX indirectly.

Dolby Pro-Logic is a surround sound format that is now widely distributed, from general theaters to home video equipment. The Dolby Pro-Logic format has four signal channels: L, C, R, and surround. Since Dolby Pro-Logic is compatible with normal stereo systems, Dolby Pro-Logic can be applied to media that can reproduce stereo sound.

Dolby Pro-Logic II is a new 5-channel surround sound system that converts 2-channel stereo and 4-channel Pro-logic surround sound into 5.1-channel surround sound. Dolby Pro-Logic II has a movie mode for playing movies and a music mode for playing music.

This movie mode is for VHS and DVD-Video with Dolby surround speakers and scheduled TV shows. This music mode is for music CDs and other stereo sources.

Dolby Digital (DD) records digital sound to reproduce high-quality surround sound. The DD format can separately record 5.1-channel sound with low-pass sound effect, divide the full-band 20Hz-20KHz into 5.1-channel sound and store the sound, and divide 2-channel surround sound into 5.1-channel sound and store the sound. Furthermore, the DD reproduces the same dynamic range as found in movie theaters and the same remarkable soundstage found in modern movie theaters.

Digital Theater System (DTS) is the latest way to reproduce digital surround sound and has 5.1 channels like DD. However, since the DTS format has a low sound compression rate, the DTS format can reproduce sound with a highly sensitive signal-to-noise ratio (S/N). DTS has a wide dynamic range and excellent channel separation, which can express both tiny sounds and grand sounds very well.

Because DD is the standard format for DVD-Video, all DVD players support DD. However, because DTS is not a standard format for DVD-Video, only certain DVD players or dedicated DTS decoding amplifiers can support it.

The notable difference between DD and DTS is the degree to which audio data can be compressed. DD has a higher compression ratio than DTS. Higher compression means more damage to the original sound source. DD has a transfer rate of about 380kb per second, while DTS has a transfer rate of about 1.4Mb per second. In other words, DTS transmits approximately three times more data than DD to reproduce a sound similar to that of DD.

THX is not a specialized sound format standard like DD and DTS. THX, manufactured by Lucas Film, is an authentication system applied to sound equipment, image equipment, and sound sources. THX can be applied to Dolby Pro-Logic, Dolby Digital, and DTS. Certification by THX may be required for DVD qualification. Products certified by THX can win users' trust in the excellent sound and image quality of their products to a certain extent.

The D/A converter 240 converts the digital signal output by the digital signal processor 230 into an analog signal.

Accordingly, the main body 110 produces a stereo field effect to realize beautiful and realistic audio sound.

FIG. 4 is a perspective view of the main body 110 of the portable multi-channel amplifier configured on the docking station 300 . An external audio system and a speaker system can be connected to the docking station 300 via cables.

The extension base 300 includes a connection support portion 310 and a plurality of cable connectors. The connection part 113 of the main body 110 is inserted into the connection support part 310 to connect a circuit to the connection support part 310 and support the main body 110 . A plurality of cable connectors are directly connected to the connection support part 310 to connect with an external audio system and a speaker system through cables.

In addition, the docking station 300 includes a power amplifier (not shown), a voltage supply device (not shown), and a charging device (not shown). The power amplifier amplifies the signal output from the main body 110 and outputs the signal through the cable connector. The voltage supply device supplies voltage to the main body 110 through the connecting portion of the main body 110 . The charging device supplements the voltage provided by the voltage supply device. Here, DC-in and USB ports can be used to provide power.

While the invention has been described with reference to the embodiments shown in the drawings, the drawings are for illustration purposes only. The scope of the present invention should not be construed as being limited to the examples. Accordingly, it will be apparent to those skilled in the art that changes can be made in the described embodiments without departing from the spirit and scope of the invention. Therefore, the true technical protection scope of the present invention is determined based on the technical essence of the appended claims.

According to the present invention, a user carrying a portable multi-channel amplifier connected to a portable audio system can listen to surround sound anywhere. Furthermore, in the portable multi-channel amplifier, the main body of the portable multi-channel amplifier can be separated from the input/output adapter. Therefore the portable multi-channel amplifier can be easily carried and used for various purposes by using the docking station at home.

Claims (10)

1. portable multi-channel amplifier comprises:

Input/output adapter, this input/output adapter comprises: a plurality of cable connectors are used to connect an external audio system that is used for reproducing audio signal; One is audio signal output the device of sound by cable; With a circuit connector that is used for cable connector is connected to the external circuit outside this input/output adapter; And

Main body, this main body comprises: a coupling part, be inserted with the circuit connector of this input/output adapter in this coupling part, and it can separate with circuit connector; With a treatment circuit, being used for the Audio Signal Processing of being imported by the coupling part by external audio system is multi channel signals, and this multi channel signals is outputed to this circuit connector by the coupling part.

2. portable multi-channel amplifier according to claim 1 is characterized in that this main body comprises:

Digital signal processor is used for received audio signal and audio signal is converted to have Dolby Pro-Logic, THX, AC-3, or the surrounding sound of DTS form; And

D/A converter is used for converting the digital signal by digital signal processor output to analog signal.

3. portable multi-channel amplifier according to claim 2, it is characterized in that this digital signal processor further has Dolby Pro-LogicII function, it with 2 channel stereo and 4 channel stereo pro-logic around converting 5.1 passage surround sounds to.

4. portable multi-channel amplifier according to claim 2, it is characterized in that this digital signal processor further has Environmental Audio Extension (EAX) function, it is API and is applied in the recreation to make sound effect true to nature by the game developer, and in recreation, be configured with the cave, water channel, during hall etc., for simple sound effect calls API and relevant parameter is set.

5. portable multi-channel amplifier comprises:

A spread footing, this spread footing comprises: one connects support section; With a plurality of cable connector parts, this cable connector part directly be connected the support section connection so that be connected with a speaker system with external audio system by cable; With

Main body, this main body comprises: a coupling part is inserted in this connection support section; With a treatment circuit, be the Audio Signal Processing of importing by the coupling part by external audio system multi channel signals, and this multi channel signals is outputed to the connection support section by the coupling part;

Wherein this main body is installed on this spread footing and by this spread footing and supports.

6. portable multi-channel amplifier according to claim 5 is characterized in that this spread footing further comprises power amplifier, is used to amplify the signal by being installed in the main body output on the spread footing, and this signal is exported by cable connector.

7. portable multi-channel amplifier according to claim 6 is characterized in that this spread footing further comprises provides voltage to this main body by the coupling part of this main body voltage supply device.

8. portable multi-channel amplifier according to claim 7 is characterized in that this spread footing comprises charging device, is used for replenishing the voltage that this voltage supply device is provided.

9. portable multi-channel amplifier according to claim 8 is characterized in that this voltage supply device uses DC-in that power supply is provided.

10. portable multi-channel amplifier according to claim 8 is characterized in that this voltage supply device uses USB port that power supply is provided.

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