TWM486220U - Home theatre and karaoke integration system - Google Patents

Description

Home theater and karaoke integration system

The present invention relates to an integrated system, and more particularly to a home theater and karaoke integration system.

Home theater equipment is becoming more and more popular in the general family, providing a variety of entertainment on multimedia, such as movie appreciation, TV show, music appreciation, etc., and can be multi-channel, The high-resolution, high-quality output method allows users to feel the presence of a movie theater or even a live performance at home. It is a convenient and effective multimedia entertainment device.

Karaoke is also a very popular family entertainment. When performing karaoke singing activities at home, it is usually necessary to additionally configure a karaoke system to switch to the home theater equipment. The karaoke system is used for playing the vocal music data stored by the karaoke system, and is connected with a microphone. The singer's voice signal is input from the microphone, and is output together with the vocal band signal to achieve the karaoke activity.

Today's commercially available multimedia products are dominated by digital signals. Although digital signals are more complex than analog signals in signal processing, the shortcomings of this part can be overcome by computing circuits of various multimedia devices and processors. And the digital signal has the ability to process images and sounds simultaneously Signals, which are easy to remove noise, etc., have replaced analog signals in most audio and video applications. Of course, in the home theater equipment, digital processing is also performed in a digital processing manner to provide better users. Audio and video experience.

However, the karaoke system provided by the existing karaoke system is mainly analog signal. When performing karaoke activities, the home theater system cannot be used to denoise and optimize the analog signal, which may cause interference and distortion. The situation occurred, so it could not provide users with better audio and video effects. In addition, the sound input by the microphone is usually based on the analog signal, and the noise reduction and optimization processing is also performed directly, so that the audio and video performance of the home theater equipment cannot be fully utilized.

Therefore, the purpose of the present invention is to provide a home theater and karaoke integration system that integrates karaoke and home theater functions and can output high quality digital audio and video signals.

Therefore, the new home theater and karaoke integration system includes a digital receiving unit capable of receiving a digital signal and separating the digital signal into a video signal and an audio signal, and a human voice signal input by a microphone. a microphone receiving unit, a pair of first audio processing signals for performing a first optimization process to generate a first processing signal, and a pair of the human voice signals input by the microphone for performing a second optimization process to generate a second a second processing unit for processing the signal, a mixing unit for mixing the first processing signal and the second processing signal into a mixed sound signal, and mixing the video signal and the mixed sound signal into a digital output signal Output unit for output.

The effect of the novel is that the digital receiving unit can receive the digital signal from the jukebox, the set-top box, the multimedia player, etc., and separate the audio signal for processing, and then from the microphone receiving unit The received and processed vocal signals are output together, integrating karaoke and home theater functions, and output processed high quality digital audio and video.

101‧‧‧ noise reduction steps

102‧‧‧ Gain control steps

111‧‧‧Bandpass filtering step

112‧‧‧ Equalization adjustment steps

113‧‧‧Transformation steps

121‧‧‧ Noise reduction steps

122‧‧‧ Gain control steps

123‧‧‧Bandpass filtering step

124‧‧‧ Equalization adjustment steps

125‧‧‧Level control steps

126‧‧‧ feedback suppression steps

127‧‧‧ Effect generation steps

21‧‧‧Digital receiving unit

22‧‧‧Microphone receiving unit

23‧‧‧First Processing Unit

24‧‧‧Second processing unit

25‧‧‧Mixed unit

26‧‧‧Output unit

27‧‧‧External sound receiving unit

28‧‧‧Auxiliary Processing Unit

29‧‧‧Conversion unit

31‧‧‧Image output device

32‧‧‧Sound output equipment

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a system architecture diagram illustrating a preferred embodiment of the novel home theater and karaoke integration system; 2 is a flow chart illustrating a first optimization process of the preferred embodiment; FIG. 3 is a flow chart illustrating a second optimization process of the preferred embodiment; FIG. 4 is a flow chart illustrating the preferred process An auxiliary process of the embodiment; and FIG. 5 is a schematic diagram illustrating subsequent processing of a digital output signal of the preferred embodiment.

Referring to FIG. 1, a preferred embodiment of the home theater and karaoke integration system includes a digital signal capable of receiving a digital signal and The digital receiving unit 21 is separated into a video signal and an audio signal, a microphone receiving unit 22 capable of receiving a human voice signal input by a microphone, and a pair of the audio signals are subjected to a first optimization process to generate a first a first processing unit 23 for processing the signal, a pair of the second voice processing unit 24 for performing a second optimization process to generate a second processing signal, and a first processing signal and the second The mixing unit 25 for processing the mixed signal into a mixed sound signal, the output unit 26 for outputting the video signal and the mixed sound signal into a digital output signal, and an external sound receiving unit 27 for receiving an external sound signal An auxiliary processing unit 28 for performing an auxiliary processing on the external audio signal, and a converting unit 29 for outputting the mixed sound signal into an analog signal.

The digital receiving unit 21 can receive the digital signal from various high-resolution media playing devices, such as a Blu-ray player, a digital set-top box, a karaoke jukebox, etc., etc., not using the above media playing device. Limited. After the digital signal is separated into the video signal and the audio signal, the audio signal is subjected to the first optimization process by the first processing unit 23.

Referring to FIG. 2, the first optimization process performs a band pass filtering step 111, an equalization adjusting step 112, and a tone changing step 113 for the audio signal.

The band pass filtering step 111 is to pass the frequency components in the specific frequency range of the audio signal and reduce the frequency components of other ranges to an extremely low level, thereby filtering out the useless frequency components in the audio signal.

And the adjustment step 112 is for the signal transmission process. Corrected by the multipath interference and shadowing effect, and the function frequency is adjusted to adjust the specific frequency, so that the output signal is closer to the original sound, and the sound can be changed in a modular manner. Styles, such as opera, classical, rock, etc., to match the type of sound being played.

The tone changing step 113 can match the activity of the karaoke, change the tone of the input audio signal, and match the vocalist's tone, so that the singer can freely adjust and happily sing.

Referring to FIG. 3, the second optimization process is to perform a noise reduction step 121, a gain control step 122, a band pass filtering step 123, an equalization adjustment step 124, a level control step 125, and a feedback suppression on the human voice signal. Step 126, and an effect generating step 127.

The noise reduction step 121 is for the frequency distribution of the human voice signal A judgment is made to eliminate the noise of a specific frequency so that the output of the human voice signal is closer to the original sound.

The gain control step 122 amplifies the input signal by a specific magnification, thereby achieving the effect of sound amplification, so that the human voice signal can be output at a louder volume than the original sound.

The band pass filtering step 123 and the equalization adjustment step 124 are the same as in the first optimization process shown in FIG. 2, except that the object is changed from the input digital signal to the human voice signal input by the microphone, so Narration.

The level is defined as the ratio of the two units of measurement. The level control step 125 is that the control level must not exceed a certain ratio. If the ratio is exceeded, it means that the intensity is too strong, which may cause the sound signal to be distorted. Controlling the ratio of the levels by the level control step 125 enables the outputted audio signal to be more realistic.

At the same time, when the sound is input and output in a space, it is easy to generate feedback and generate a sharp feedback sound, which is particularly likely to occur when the microphone inputs the singing sound and plays the accompaniment with the sound. Therefore, the feedback suppression step 126 can distinguish the human voice from the microphone and generate the feedback music sound, and perform feedback suppression to avoid affecting the singing mood due to the sharp feedback sound when performing the karaoke activity.

The effect generating step 127 is to perform a sound field effect processing to generate a sound field effect such as an echo, so that the output sound can be as in a concert hall or an opera house, and on the other hand, the output sound can be made more The texture, on the other hand, adds fun to the karaoke event and improves the quality of the home multimedia experience.

Referring to FIG. 1 and FIG. 4, the auxiliary processing performed by the auxiliary processing unit 28 performs a noise reduction step 101 on the external audio signal and a gain control step 102. In addition to the signals received from the digital receiving unit 21 and the sound received from the microphone receiving unit 22, the preferred embodiment provides a function of connecting external sounds such as MP3, CD, etc. The connected external sound can also be cancelled by the noise reduction step 101 and amplified by the gain control step 102. The external audio signal processed by the auxiliary processing unit 28 is mixed with the audio signal to perform the first optimization process by the first processing unit 23.

Referring to FIG. 1, the first processing signal subjected to the first optimization processing, and the second processing signal subjected to the second optimization processing, in the hybrid The element 25 performs a mixing process to generate the mixed sound signal. The mixing unit 25 is processed by a digital signal processor (DSP), and the first processing signal is mixed with the second processing signal by a matrix conversion operation. The mixed sound signal is transmitted from the mixing unit 25 to the output unit 26 via the serial interface control, and can be outputted in a high-resolution multimedia interface (HDMI).

Referring to FIG. 1 and FIG. 5, the preferred embodiment further includes an image output device 31 and a sound output device 32. The digital output signal includes an image capturing unit and an audio receiving unit. The video output device 31 is output by the image output device 31. The image output device 31 can be a television, a single gun projector, etc., Limited to the above devices. The audio component is output by the sound output device 32. The audio component of the digital output signal is in a multi-channel format, and the sound output device 32 can output a multi-channel sound effect. The multi-channel specifications of the sound output device 32 may be specifications of 2.0, 2.1, 5.1, 6.1, and 7.1, but are not limited to the devices of the above specifications. One of the more commonly used in the home theater is the 5.1-channel specification, which is a six-channel surround sound system. The "5" refers to five global speakers with an output frequency of 3 to 20,000 Hz, and ".1" means A 3~120 Hz subwoofer. Among them, the five global speakers include a central speaker, a left speaker, a right speaker, a left rear speaker, and a right rear speaker, which can be combined with each other to output a surround sound, providing a general family as if in a movie theater or Sound effects in the real world.

In addition, although the multimedia devices currently used in the home are usually based on output digital signals, the analog signal output has its unique advantages. Points, for example, theoretically, the resolution can approach infinity, there is no quantization error, and the like. For the above reasons, some users still have an insistence on the analog output device. The conversion unit 29 shown in FIG. 1 is suitable for converting the mixed sound signal generated by the mixing unit 25, and the mixed sound signal is digitally digitized. The signal is converted to an analog signal for output to match the analog output device.

In summary, the digital receiving unit 21 receives the high-quality digital signal, and the audio signal separated by the digital signal and the human voice signal received from the microphone receiving unit 22 pass through the first After the optimization process and the second optimization process, the mixing unit 25 outputs the video signal separated by the digital signal, and integrates the functions of the karaoke and the home theater, and can output the processed high quality. Digital audio and video signals, so it can achieve the purpose of this new type.

However, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made in accordance with the scope of the present patent application and the contents of the patent specification, All remain within the scope of this new patent.

21‧‧‧Digital receiving unit

22‧‧‧Microphone receiving unit

23‧‧‧First Processing Unit

24‧‧‧Second processing unit

25‧‧‧Mixed unit

26‧‧‧Output unit

27‧‧‧External sound receiving unit

28‧‧‧Auxiliary Processing Unit

29‧‧‧Conversion unit

Claims (13)

A home theater and karaoke integration system includes: a digital receiving unit capable of receiving a digital signal and separating the digital signal into a video signal and an audio signal; and a microphone receiving unit capable of receiving a person input by a microphone a first processing unit that performs a first optimization process on the audio signal to generate a first processing signal; and a second processing unit that performs a second optimization process on the human voice signal input by the microphone. a second processing signal; a mixing unit, mixing the first processing signal and the second processing signal into a mixed sound signal; and an output unit mixing the video signal and the mixed sound signal into a digital output signal Output. The home theater and karaoke integration system according to claim 1, wherein the first optimization process is a band pass filtering step and a first adjustment step of the audio signal. The home theater and karaoke integration system of claim 2, wherein the first optimization process further performs a tone changing step on the audio signal. The home theater and karaoke integration system according to claim 1, wherein the second optimization process is a noise reduction step, a gain control step, a band pass filtering step, a first adjustment step, and a step of the human voice signal. Level control step, and a feedback suppression step. The home theater and karaoke integration system according to claim 4, wherein the second optimization process further performs an effect generating step on the vocal signal. The home theater and karaoke integration system according to claim 1, further comprising an external sound receiving unit for receiving an external sound signal. The home theater and karaoke integration system of claim 6, further comprising an auxiliary processing unit for performing an auxiliary processing on the external audio signal, wherein the auxiliary processing is performing a noise reduction step on the external audio signal, and A gain control step. The home theater and karaoke integration system according to claim 7, wherein the external audio signal processed by the auxiliary processing unit is mixed with the audio signal to perform the first optimization process by the first processing unit. The home theater and karaoke integration system of claim 1, further comprising an image output device and an audio output device, wherein the digital output signal comprises an image portion and an audio portion, and the image output device outputs the image output device. The audio unit outputs the sound output device. The home theater and karaoke integration system according to claim 9, wherein the audio portion of the digital output signal is in a multi-channel format, and the sound output device can output multi-channel sound effects. The home theater and karaoke integration system according to claim 1, wherein the mixing unit is a chip using a digital signal processor The first processed signal is mixed with the second processed signal by a matrix conversion operation. The home theater and karaoke integration system according to claim 1, wherein the mixing unit transmits the mixed sound signal to the output unit by means of a serial interface control. The home theater and karaoke integration system according to claim 1, further comprising a conversion unit for converting the mixed sound signal into an analog signal for output.