TW468358B - 3D sound system capable of selectively performing downmixing - Google Patents

Abstract

The invention provides a 3D sound system, which includes five speakers located in the front, front left and right sides, and rear left and right sides of the listener respectively to play sound to listener; two headsets used to play sound to the left and right ears of the listener; a sound processor electrically connected to the front, front left and front right speakers with respect to the listener used to generate a plurality of sound signals in accordance with the location of each speaker of the speaker sets; a signal transmitter electrically connected to the sound processor used to transmit signal in wireless way; a sound signal receiver electrically connected to the rear left and right speakers with respect to the location of the listener used to receive the signal transmitted from the signal transmitter and distribute the signal to the two speakers; and a headset signal receiver electrically connected to the two headsets used to receive the signal transmitted from the signal transmitter and distribute the signal to the two headsets. The sound processor contains a downmixing device used to mix the plural sound signals in terms of a pre-defined downmixing method into the two headset signals with plural sound signal characteristics. When the listener turns on the downmixing device, the downmixing device will mix the plural sound signals into the two headset signals, while the signal transmitter will send the two headset signals to the headset signal receiver for being played by distributing to the two headsets. When the listener shuts down the downmixing device, the signal transmitter will transmit the sound signals of the two speakers located at the rear left and right sides of the listener to the sound signal receiver for being played by distributing to the two speakers.

Description

468358 V. Description of the invention (1) | The present invention provides a 3D sound system, especially I refers to a 3D space sound system which can choose whether to perform do wnmix. In general home theaters, the 5.1 channel surround sound provided by Dolby (Do 1 by) audio system or digital theater system (DTS) can make consumers experience very comfortable listening experience, however 5. The 1-channel surround sound effect is composed of six 11-pin octaves. Two of the six σ-eight octaves are installed on the left and right sides of the rear of the indoor space. The line is drawn from the front of the indoor space to the back of the indoor space, and often requires a long line. Please refer to FIG. 1. FIG. 1 is a schematic diagram of a conventional three-dimensional space acoustic system 10. The three-dimensional space audio system 10 is located in an indoor space 12, which includes two front speakers 1 4 and 16 respectively located on the front and right sides of the indoor space 1 2 and two rear speakers 1 8 and 2 0 is located in the indoor space 1 2 and left and right two sides respectively, one directly in front 0 8 2 2 is located in the middle of the front of the indoor space 12 2 and a 1 subwoofer 2 4 is located in the indoor space 12 2 and A processor 2 6 is electrically connected to each of the speakers 1, 4, 16, 18, 20, 2, 2, 24, and is used to generate six according to the position of each of the speakers 14, 16, 18, 20, 22, 24. Audio signal. The processor 26 is connected to the speakers 18, 20 through the connecting wires 28, 30. As shown in Figure 1, the length of the connecting wires 28, 30 must be sufficient to pull from the front to the rear of the indoor space 12. This design is very inconvenient on the pull line, and

Page 5 4-6 8 35 8 V. Description of the invention (2) Can damage indoor decoration. Therefore, the main purpose of the present invention is to provide a three-dimensional spatial sound system, which transmits the signal to the two remaining teams by radio. In addition, listeners can also choose whether to perform mixing to use the headset group. Receive the signal i to solve the above problem.

I Please refer to FIG. 2. FIG. 2 is a schematic diagram of a three-dimensional spatial acoustic system 40 according to the present invention. The three-dimensional spatial sound system 40 is a Dolby (d 0 1 by) sound system or a digital theater system (DTS), which includes a speaker group 42 and a headphone group 58. The speaker system 42 includes One speaker 4 4 is located directly in front of a listener position 46, two speakers 4 8 and 50 are respectively located in front of the listener position 4 6 and two speakers 5 2 and 5 4 are respectively located in the receiver i After the listener position 4 6 and a left and right sides, and a subwoofer 5 6 is used to play the subwoofer to the listener position 4 6, the headphone set 5 8 includes two earphones 6 0 and 6 2 for the listener position 4 6 respectively. The sound of the listener's left and right ears. Please refer to Fig. 3. Fig. 3 is a functional block diagram i of the three-dimensional space audio system 40. The audio system 40 further includes an audio processor 64, a signal transmitter _ :( signal transmi1: ter) 68 ’, a headphone signal receiver 70, and a tone signal receiver 72. The sound processor 6 4 series is electrically connected to the speakers 4 4, 4 8, 50 and the subwoofer ° thorn ° 8 56, which is used according to each of the eight groups of 4 2 σ 8 4 4, 4 8, 5 0, 5 2, 5 4 and subwoofer 5 6 to generate six audio signals. The audio processor 64 includes a mixing device ((10 * 111111 parent 丨 叩 468358) Five, invention description (3) dev ice) 6 6 is used to mix the six audio signals according to a predetermined mixing method The two headphone signals have the characteristics of the six audio signals. The signal transmitter 6 8 is electrically connected to the audio processor 64, and is used to wirelessly transmit the audio signals belonging to 8 52, 5 4 or belong to Headphone signals for headphones 60 and 62. Audio signal receiver 7 2 is electrically connected to speakers 5 2 and 5 4 to receive two audio signals from signal transmitter 6 8 and distribute the two audio signals to two speakers. 5 2, 5 4, the headphone signal receiver 70 is electrically connected to the headphone 60, 62, and is used to receive the two headphone signals from the signal transmitter 68 and distribute the two headphone signals to the two headphone 60, 62. '' Mixing device 6 6 can be turned on or off when the listener turns on the mixing device

At 6 o’clock, the mixing device 66 will mix the six audio signals into the two headphone signals, and the signal transmitter 68 will transmit the two headphone signals to the headphone signal receiver 70, and distribute it to the two headphone signal receivers 70. Headphones 60, 6 2 to play sound. When the listener turns off the mixing device 66, the signal transmitter 68 will transmit the audio signals belonging to the speakers 5 2, 5 4 i to the audio signal receiver 72, and assign it to the two speakers 52, 54 for playback. sound. II '丨 i! I The predetermined mixing method includes a part of the sound signal to be transmitted to the speaker 44, part of the sound signal to be transmitted to the subwoofer 5 6 and all of the original to be transmitted to the speaker. The audio signal of 5 2 is mixed with the original audio signal to be transmitted to the speaker 4 8 to generate the earphone signal to be transmitted to the left earphone 60, and some of the audio signal to be transmitted to the team 4 4 is partially transmitted. The sound to the heavy bass team 5 6 468358 V. Description of the invention (4) The sound signal and all the sound signals intended to be transmitted to the speaker 5 4 are mixed with the sound signals originally intended to be transmitted to the LA 8:50 to generate the sound to be transmitted to the right Headphone signal for headphone 6 2. However, the listener can choose whether to mix the audio signal of the original desire to the subwoofer 8 ° 5 6 into the audio signal of the original desire to pass to the speakers 4 8, 50, because the original desire passes to the subwoofer taste] ° 8 5 6 The audio signal does not have to be mixed with the original audio signal to be transmitted to 'thorn 0-8 48, 50. Compared with the conventional three-dimensional space audio system 10, the signal transmitter 6 in the three-dimensional space audio system 40 transmits the audio signal to the speakers 5 2, 5 4 by radio, so the speakers 5 2, 5 There is no wiring problem between the 4 and the audio processor 64. In addition, if the listener wants to use the headphone set 5 8 to listen to the virtual multi-channel sound effect, the listener can turn on the mixing device 6 6 to mix the audio signal into a headphone signal, and use the signal transmitter 6 8 to The radio sends the headset signal to the headsets 60 and 62 to achieve a virtual surround effect. The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the scope of the patent application for the present invention shall fall within the scope of the invention patent.

468358 Simple illustration of the diagram The simple illustration of the diagram is the schematic diagram of the conventional three-dimensional space acoustic system. 0 The diagram is the schematic diagram of the second-degree spatial acoustic system of the present invention. 0 Figure— * is the functional block of the third-degree spatial acoustic system shown in FIG. Illustration. Explanation of symbols shown 40-degree spatial sound system 42 speaker set 44, 48 '50' 52 > 54 0 stabbing eight 46 listener position 5 6 subwoofer pullout 58 headphone set 60, 62 headphone 64 audio processor 66 mixed Audio equipment 68 Signal transmitter 70 Headphone signal receiver 72 Audio signal receiver

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Claims (1)

4 6 8 35 8 6. Scope of patent application 1. A three-degree spatial sound system, which includes: a group of eight, which includes a group of five, which are located directly in front of a listener's position, the listener The left and right sides before the position, and the left and right sides behind the position of the listener, are used to play sound to the position of the listener; a headphone set, which contains two headphones, is used to play sound to the left and right ears of the listener respectively An audio processor, which is electrically connected to the front of the listener's position and the front left and right sides of the eighth, used to generate a plurality of audio signals according to the position of each eighth of the eighth group, the audio processing The device includes a mixing device (downmixing device) for mixing the plurality of audio signals into two ear i-phone signals having the characteristics of the plurality of audio signals according to a predetermined mixing method; a signal transmitter (signal transmitter) ), Which is electrically connected to the audio processor and is used to transmit by radio (wire 1 ess) two audio signals belonging to the squadrons on the left and right sides behind the listener's position or After mixing of the two earphone signal produced;! A sound signal receiver electrically coupled to the horn stack is located in the left and right sides of the listener ί two Bragg's rearward position. Eight, used to receive the two audio signals from the signal transmitter and distribute the two audio signals to the two speakers; a headphone signal receiver, electrically connected to the two headphones of the headphone set, to receive the signal transmission The two earphone signals sent from the transmitter and distribute the two earphone signals to the two earphones; wherein when the listener turns on the mixing device, the mixing device will mix the plurality of audio signals into the two earphone signals, and The signal transmitter Page 10-4 6 8 35 8 6. The scope of patent application will transmit the two headset signals to the headset signal receiver, and assign them to 1 of the 2 headsets to play sound, and when the listener When the mixing device is turned off, the signal transmitter transmits the audio signals belonging to the two speakers on the left and right sides behind the listener's position to the audio signal receiver, and assigns it to the two speakers to play the sound. 2. For example, the three-degree spatial sound system in the scope of the patent application, where the predetermined mixing method includes transmitting the sound signal of a part of the original desire to the speaker directly in front of the listening position of the south t and the entire original desire to The sound signal of the left I-side speaker behind the listener's position is mixed into the original left to the left of the listener's position; the sound signal of the eight is to generate the headphone signal to be transmitted to the left earphone, and some of the original sound is transmitted to the The sound signal of the speaker directly in front of the listener and the sound signal of all the original speakers intended to be transmitted to the right of the rear of the listener's position are mixed with the sound signals of the original speaker intended to be transmitted to the right speaker in front of the listener's position to generate the sound to be transmitted to the right earphone Headphone signal. 3. If the third-degree spatial sound system of the second patent area is applied for, the system of the π eight groups also includes a bass woofer (w ο 〇fer), which is electrically connected to the sound! Processor, which is used to provide the listener with Position to play heavy bass. : 4. If the third-degree spatial sound system of the scope of the patent application is applied for, the i listener can choose whether to mix part of the original signal intended to be transmitted to the subwoofer into the original intended to be forwarded to the position of the listener. The sound signal of the left speaker generates the headphone signal to be transmitted to the left earphone, and transmits some of the original desire to the Page 11 468358 「———————- ----------- γτ-. 6. The patent application scope The sound signal of the bass bass squad is mixed with the sound originally intended to be transmitted to the side speaker of the listener Signal to generate the ear to be transmitted to the right earphone 5. If the patent application scope of the first three-dimensional spatial sound system is a Dolby sound system or a digital theater system (DTS, theater system) 0 position front right Signal. T, which is digital Page 12