CN201440322U - Portable voice-control system and voice-control device thereof - Google Patents
Portable voice-control system and voice-control device thereof Download PDFInfo
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- CN201440322U CN201440322U CN2009201631316U CN200920163131U CN201440322U CN 201440322 U CN201440322 U CN 201440322U CN 2009201631316 U CN2009201631316 U CN 2009201631316U CN 200920163131 U CN200920163131 U CN 200920163131U CN 201440322 U CN201440322 U CN 201440322U
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Abstract
The utility model relates to a portable voice-control system and a voice-control device thereof. The voice-control system is used for controlling a sound-source signal which is issued by an electronic device. The portable voice-control system comprises an earphone device and a voice-control device. The voice-control device comprises a sound-source receiving unit, a sound synthesizing module and an audio output unit. The sound-source receiving unit is connected with the electronic device so as to receiving the sound-source signal which is produced by the electronic device; the sound synthesizing module receives the sound-source signal and a voice signal which is from the exterior of the sound-control device at the same time and synthesizes the sound-source signal and the voice signal to a synthesized audio; and the audio output unit outputs the synthesized audio to the earphone device. When the portable voice-control system is connected with the electronic device, the sound which is issued by the electronic device and the voice or singing which is issued by the user outside the voice-control system can be simultaneously heard.
Description
Technical field
The utility model relates to a kind of portable voice control system and sound control apparatus thereof, relates in particular to a kind of portable voice control system and sound control apparatus thereof of controlling the sound of separate sources.
Background technology
Have many electronic products that the function of music is provided at present, for example early stage CD Player is to recent music phone, MP3 or MP4 player all the fashion.Many people have been used to use earphone to connect these music equipment listoning musics, particularly for the user who likes singing, listen song to practice the good tool of singing especially whenever and wherever possible.
Yet, when the user uses music equipment white silk to sing, only listen the music sound that obtains the music player broadcast from earphone, and the user follows music sound and the experienced sound that sends when singing, be that medium is passed back in user's ear more then via air, add and use earphone to intercept outside sound, the user often is difficult to distinguish whether tone of oneself or rhythm meet with melody.
If the user wants while listening background music, practicing and sing, then often must use a computer equipment and program software carry out the setting of voice output, input, are not a kind of use-patterns of friendliness for the user who is ignorant of computer operation; In addition, movable out of doors or medium on the way by bus the most suitable tin of song practiced when singing, and also can't use with computer operation, produces very big inconvenience.
Summary of the invention
The utility model provides a kind of voice control system and sound control apparatus thereof, when hearing music for the user, can also hear voice and tone that the user sends simultaneously, to promote use recreational, also promotes the user and listens song to practice the effect of singing.
One of them embodiment of the present utility model provides a kind of sound control apparatus, can be used for controlling the sound source signal that Headphone device and electronic installation send.This sound control apparatus has comprised source of sound receiving element, sound synthesis module and audio output unit.The source of sound receiving element is used for receiving the sound source signal that sends of electronic installation, and the sound synthesis module receives sound source signal and from the voice signal of sound control apparatus outside, and the two synthesizes Composite tone with this; Composite tone after synthetic can be outputed in the Headphone device by audio output unit.Whereby, just can with Headphone device when listening to the source of sound that electronic installation sends, also hear outside voice.
Another embodiment of the present utility model then provides a kind of portable voice control system, and it can control the sound source signal that electronic installation sends.Headphone device and sound control apparatus have been comprised in the portable voice control system; Sound control apparatus also comprises source of sound receiving element, sound synthesis module and audio output unit.Source of sound receiving element and electronic installation optionally couple, and are used for receiving sound source signal; And the sound synthesis module receives sound source signal from the outside received speech signal of sound control apparatus and from the source of sound receiving element, and sound source signal and voice signal are synthesized Composite tone; Audio output unit then outputs to Composite tone in the Headphone device.Whereby, on one side the user can utilize the portable voice control system to listen to the sound source signal that electronic installation sends, Yi Bian also hear the outside voice that imported into.
Portable voice control system provided by the utility model and sound control apparatus thereof, be available for users to the electronic installation that any connection can play sound, and when using Headphone device to listen to the sound that electronic installation broadcasts, receive the sound of separate sources simultaneously, for example connect music player and listen to background music and user's song, or the connection language learner, listen to teaching pronunciation and learner's pronunciation practice; And the element with the portable voice control system when not using separates, in order to taking in.
Description of drawings
Fig. 1: the utility model provides the block scheme of a kind of portable voice control system first embodiment;
Fig. 2: the circuit diagram of the sound control apparatus of the utility model first embodiment;
Fig. 3: the utility model provides the block scheme of a kind of portable voice control system second embodiment;
Fig. 4: the utility model provides the block scheme of a kind of portable voice control system the 3rd embodiment;
Fig. 5: the utility model provides the synoptic diagram of a kind of portable voice control system the 4th embodiment; And
Fig. 6: the utility model provides the synoptic diagram of a kind of portable voice control system the 5th embodiment.
Description of reference numerals in the above-mentioned accompanying drawing is as follows:
1,1a-d portable voice control system
10, the 10a-b Headphone device
100 modules of raising one's voice
The 100a-b loudspeaker
102,102a-b audio frequency input block
12, the 12a-d sound control apparatus
120, the 120a-b audio output unit
122 sound synthesis modules
124,124a-b source of sound receiving element
1240 signal connecting lines
126 microphone radio reception unit
128 amplifier of microphone
130,130a microphone receiving element
132 switchs
134, the 134a shell
136 MICs
14, the external microphone of 14a
140,140a microphone transmission unit
3 electronic installations
30 music players
32 music phones
300,300a-b source of sound transmission unit
501 microphone radio reception element circuit figure
503 amplifier of microphone circuit diagrams
505 sound synthesis module circuit diagrams
507 audio output unit circuit diagrams
Embodiment
According to embodiment of the present utility model, several preferred implementation below are provided, the spendable technological means of the utility model is described, but following explanation is an illustration only, be not to be used to limit the utility model.
The portable voice control system first embodiment block scheme with reference to shown in Figure 1 comprises a Headphone device 10 and a sound control apparatus 12 in the portable voice control system 1.Portable voice control system 1 is in order to the sound source signal that control electronic installation 3 is sent, and the voice signal that makes sound source signal and outside outputs in the Headphone device 10 after sound control apparatus 12 is handled in the lump.
Comprise a source of sound transmission unit 300 in the electronic installation 3.Electronic installation 3 can be in order to send sound source signals such as music, the pronunciation of song glossary as devices such as music player (MP3/MP4 player), music phone (Music mobile phone), language learner, e-dictionary or computing machines; And utilize source of sound transmission unit 300 transmission tone source signals.In the present embodiment, electronic installation 3 can produce stereosonic sound source signal.
Then comprise audio output unit 120, sound synthesis module 122, source of sound receiving element 124, microphone radio reception unit 126 and amplifier of microphone 128 in the sound control apparatus 12.Wherein, source of sound receiving element 124 optionally couples with the source of sound transmission unit 300 of electronic installation 3; When being connected in source of sound transmission unit 300, source of sound receiving element 124 is in order to receive the sound source signal that electronic installation 3 sends, for example the signal of the music player song that continues to play back.Please in the lump with reference to sound control apparatus 12 circuit diagrams of the shown present embodiment of Fig. 2.Microphone radio reception unit 126 (Fig. 2 501) extracts the voice signal from sound control apparatus 12 outsides, for example user's voice or song, and via amplifier of microphone 128 (Fig. 2 503) voice signal that is extracted is amplified.
Sound source signal and voice signal all are sent in the middle of the sound synthesis module 122 (Fig. 2 505), carry out sound source signal and the synthetic processing of voice signal for sound synthesis module 122.Sound synthesis module 122 electrically connects with source of sound receiving element 124 and amplifier of microphone 128, and the sound signal of the lasting separate sources that will receive between the while is mixed into a Composite tone.Promptly comprised sound source signal in the middle of the Composite tone simultaneously from electronic installation 3, and the voice signal that extracts from the outside of microphone radio reception unit 126.With a specific embodiment, can comprise music sound that music player is play and user's song in the Composite tone simultaneously.Mixed Composite tone outputs to Headphone device 10 by audio output unit 120 (Fig. 2 507).
Comprise raise one's voice module 100 and audio frequency input block 102 in the Headphone device 10, the two is electrically connected mutually, and audio frequency input block 102 receives the signal that sends Headphone device 10 to, the also Composite tone of promptly being exported from the audio output unit 120 of sound control apparatus 12; Audio frequency input block 102 also is sent to module 100 output of raising one's voice with Composite tone.The module of raising one's voice 100 can comprise two loudspeakers (figure does not show), is used for wearing respectively in left and right two ears use to receive the stereo sound signal for the user.
Wherein, the audio output unit 120 of sound control apparatus 12 also optionally couples with the audio frequency input block 102 of Headphone device 10, when these two unit are connected to each other, promptly can be used for transmitting Composite tone.
The sound synthesis module 122 of present embodiment is electrically connected on operational amplification circuit chip (Operational amplifier IC) after the circuit of source of sound receiving element 124 and amplifier of microphone 128 is connected to each other, make the connection by circuit of sound source signal and voice signal mix and the amplification adjustment of amplifier, form Composite tone.The operational amplification circuit chip can amplify sound source signal in the middle of the Composite tone and voice signal respectively to scale.Stereo sound source signal in the present embodiment comprises two signals representing left and right sound channels, it is respectively with after voice signal mixes, make Composite tone also be divided into the left and right sound channels signal, sound synthesis module 122 will comprise that the audio frequency of left and right sound channels exports simultaneously, so that after being sent to Headphone device 10, export stereosonic Composite tone respectively by two loudspeakers of the module 100 of raising one's voice.
Fig. 3 provides the block scheme of portable voice control system second embodiment.Be in, portable voice control system 1a different with first embodiment comprised the microphone radio reception unit that an external microphone 14 replaces among first embodiment, in order to extract voice signal and to be sent to sound control apparatus 12a.External microphone 14 comprises a microphone transmission unit 140; Sound control apparatus 12a comprises that also a microphone receiving element 130 is electrically connected on amplifier of microphone 128 except element included in first embodiment.
Fig. 4 has showed the block scheme of portable voice control system the 3rd embodiment.The sound control apparatus 12b of the 3rd embodiment also comprises a switch 132, be electrically connected between microphone radio reception unit 126, external microphone 14 and the amplifier of microphone 128, in order to integrate built-in microphone radio reception unit 126 and external microphone 14, select portable voice control system 1b to extract the approach of voice signal arbitrarily for the user.Switch 132 can be a mechanical change-over switch, when the microphone transmission unit 140 of external microphone 14 is connected with microphone receiving element 130, switch 132 promptly switches the approach that voice signal imports sound control apparatus 12b into, receives the voice signal that is extracted by external microphone 14; Otherwise, when external microphone 14 is not connected in sound control apparatus 12b, still extract outside voice signal by microphone radio reception unit 126.All the other and the first or second embodiment something in common also no longer repeat.
As described in above each embodiment, between source of sound transmission unit 300 and the source of sound receiving element 124, between audio output unit 120 and the audio frequency input block 102, and between microphone transmission unit 140 and the microphone receiving element 130, all optionally be connected to each other, and the connection means can utilize audio frequency connectivity port in correspondence with each other to take wired electric connection.For example, microphone transmission unit 140 all can be the audio frequency connectivity port with microphone receiving element 130, wherein one is audio jack (audiojack), another person is audio jack (audio plug), when audio jack was inserted jack, external microphone 14 promptly electrically connected with sound control apparatus 12b.One of them particular instantiation please refer to Fig. 5.
Figure 5 shows that portable voice control system the 4th embodiment synoptic diagram provided by the utility model.The portable voice control system 1c of present embodiment receives the sound source signal that music player 30 sends.Portable voice control system 1c comprises: Headphone device 10a, sound control apparatus 12c and external microphone 14a.Headphone device 10a has two loudspeaker 100a, 100b, can be used for receiving stereosonic Composite tone.Wherein, the microphone transmission unit 140a of the source of sound receiving element 124a of audio frequency input block 102a, the sound control apparatus 12c of Headphone device 10a and external microphone 14a is an audio jack.Relatively, the audio output unit 120a of sound control apparatus 12c and microphone receiving element 130a, and the source of sound transmission unit 300a of music player 30 is audio jack, in order to electrically connect and transmission signals wiredly with audio jack.The advantage that this kind connects means is, when the user does not use music player 30 and portable voice control system 1c, audio jack can be extracted (unplug) from audio jack, and Headphone device 10a, sound control apparatus 12c and external microphone 14a are separated convenient collection and replacement with music player 30.
In addition, the sound control apparatus 12c in the present embodiment is provided with shell 134 and MIC 136, and audio output unit 120a, microphone receiving element 130a and MIC 136 all are located at the surface of shell 134; Source of sound receiving element 124a is because audio jack, therefore extends and goes out from the shell 134 of sound control apparatus 12c via signal connecting line 1240, so that insert the source of sound transmission unit 300a of music player 30, forms and is electrically connected.Microphone radio reception unit, amplifier of microphone and sound synthesis module (three figure does not show) are housed among the shell 134, and microphone radio reception unit also is positioned under the MIC 136.When external microphone 14a was not connected in sound control apparatus 12c, microphone radio reception unit 126 can extract the voice signal that the user externally produces via MIC 136.
Though all use the audio frequency connectivity port to be wired connection in the above description, but and can only use a kind of connection means to connect each device or element in the unrestricted same portable voice control system, the fabricator is from the different connection means of can optionally arranging in pairs or groups, and below provides a kind of embodiment explanation of different connection means again.
Fig. 6 provides the synoptic diagram of portable voice control system the 5th embodiment, and the portable voice control system 1d of present embodiment and music phone 32 are connected by Wireless transmission mode.Wherein, Headphone device 10b is a bluetooth earphone, and its audio frequency input block 102b is then for supporting the wireless communication unit of bluetooth hand-free (HFP) or earphone (HSP) agreement.The source of sound transmission unit 300b of music phone 32 also is a wireless communication unit, can support Bluetooth stereo host-host protocol (A2DP).The audio output unit 120b of sound control apparatus 12d and source of sound receiving element 124b and other elements are arranged within the shell 134a in the lump, the two is also for supporting the wireless communication unit of Bluetooth transmission, respectively in order to carry out Bluetooth wireless communication with Headphone device 10b and music phone 32.Bluetooth equipment can have been reached multiple spot pairing (Multipairing) at present, so sound control apparatus 12d can carry out wireless connections with different device simultaneously.
Built-in microphone radio reception unit (figure does not show) also is housed among the shell 134a, and extracts outside voice signal by the MIC 136 that is located at shell 134a surface.When microphone transmission unit 140a is electrically connected with microphone receiving element 130a, changes by external microphone 14a and extract voice signal.Switching between microphone radio reception unit and the external microphone 14a please refer to the explanation of the 3rd embodiment.
When music phone 32 and sound control apparatus 12d by Bluetooth pairing and wireless link and sound control apparatus 12d and Headphone device 10b also via pairing after the wireless link, sound control apparatus 12d can receive the sound source signal that music phone 32 is transmitted, reach the voice signal (as user's song) that microphone radio reception unit or external microphone 14a are extracted, and after simultaneously sound source signal and voice signal being synthesized Composite tone, be wirelessly transmitted among the Headphone device 10b, listen to background music and the song of oneself simultaneously for the user.
Wireless connections mode among the 5th embodiment also can comprise other means such as infrared ray or radio frequency, and the described Bluetooth wireless communication of the 5th embodiment only is an example wherein.In addition, those of ordinary skill in this field can be according to the explanation of the 4th and the 5th embodiment, between change source of sound transmission unit 300 and the source of sound receiving element 124, between audio output unit 120 and the audio frequency input block 102, and the connected mode between microphone transmission unit 140 and the microphone receiving element 130, for example electronic installation and sound control apparatus are wireless transmission; Headphone device and sound control apparatus are wired connection etc.
According to the explanation of the various embodiments described above as can be known, in the middle of sound control apparatus 12, have sound synthesis module 122, the sound of separate sources can be synthesized, and from module 100 outputs of raising one's voice of Headphone device 10.Therefore, the user can hear sound that electronic installation 3 sends, and the sound received of microphone radio reception unit 126 simultaneously from Headphone device 10.With concrete example, the user can hear the music that music player 30 or music phone 32 are play from Headphone device 10, hears the song that user oneself sings out facing to microphone radio reception unit 126 or external microphone 14 simultaneously.By the function that this technological means reached, while the user can listen song, follow the song white silk to sing.
Except a tin song white silk is sung, also can the portable voice control system carry out self trainings such as Chinese language exercise, for example: carry out spoken language exercise according to the language teaching material of electronic equipment plays back, the oneself confirms pronouncing accuracy from Headphone device simultaneously.
In addition, can reach the function that sound is synthetic owing to utilize sound control apparatus 12, therefore, the user needs only electronic installation 3 or even the external microphone 14 with any Headphone device 10 and broadcast sound source signal, it is identical or support on the sound control apparatus 12 of same wireless communication transmission technology to be connected to audio frequency connectivity port specification, just can carry, begin at any time to listen song to practice and sing, not need to carry out again any setting or adjustment.If desire is changed Headphone device 10 or external microphone 14 is also very easy.Certainly, the user also can replace the electronic installation 3 that sound source signal is provided at any time, when for example respectively depositing different song in music player 30 and the music phone 32, after the user also only needs the audio jack of 30 of sound control apparatus 12 and music players separated with socket or ends wireless connections, sound control apparatus 12 changed to be connected on the music phone 32 get final product.
Because each device in the portable voice control system all optionally connects or does not connect, when the user desires to take in the portable voice control system, also as long as the connection between each device is interrupted, just can respectively Headphone device 10, sound control apparatus 12 and external microphone 14 be separated, increase the convenience of user when taking in.
Clear technological means of the present utility model and the effect thereof of disclosing of above-mentioned explanation; yet aforementioned cited project is only for being suitable for part devices illustrated of the present utility model; be not in order to the restriction category that the utility model was suitable for; meet spirit of the present utility model and material change's technological means of the present utility model not if any other, all belong to the scope of protection that the utility model is contained.
Claims (22)
1. sound control apparatus is controlled sound source signal that an electronic installation sent and output sound to a Headphone device, it is characterized in that, comprising:
One source of sound receiving element receives this sound source signal;
One sound synthesis module receives this sound source signal that a voice signal and this source of sound receiving element from this sound control apparatus outside are received, and this sound source signal and this voice signal are synthesized a Composite tone; And
One audio output unit is exported this Composite tone to this Headphone device.
2. sound control apparatus as claimed in claim 1 is characterized in that, also comprises:
One microphone radio reception unit extracts this voice signal; And
One amplifier of microphone is electrically connected between this microphone radio reception unit and this sound synthesis module, amplifies this voice signal that this microphone radio reception unit is received.
3. sound control apparatus as claimed in claim 2 is characterized in that, also comprises:
One shell, this sound synthesis module, this microphone radio reception unit and this amplifier of microphone are located among this shell; And
One MIC is arranged on this case surface and this microphone radio reception unit, and this microphone radio reception unit extracts this voice signal by this MIC.
4. sound control apparatus as claimed in claim 1 is characterized in that, also comprises:
One microphone receiving element is in order to be electrically connected an external microphone, to receive this voice signal that this external microphone is extracted; And
One amplifier of microphone is electrically connected between this microphone receiving element and this sound synthesis module, amplifies this voice signal that this microphone receiving element is received.
5. sound control apparatus as claimed in claim 4 is characterized in that, also comprises:
One shell, this sound synthesis module and this amplifier of microphone are located among this shell.
6. sound control apparatus as claimed in claim 1 is characterized in that, also comprises:
One microphone radio reception unit extracts this voice signal;
One microphone receiving element is in order to be electrically connected an external microphone, to receive this voice signal that this external microphone is extracted;
One switch is electrically connected on this microphone radio reception unit and this microphone receiving element, and this microphone radio reception unit and this microphone receiving element are according to the switching of this switch and extract this voice signal by the two one of them; And
One amplifier of microphone is electrically connected between this switch and this sound synthesis module, is used to amplify this voice signal.
7. sound control apparatus as claimed in claim 6 is characterized in that, also comprises:
One shell, this sound synthesis module, this microphone radio reception unit, this switch and this amplifier of microphone are located among this shell; And
One MIC is arranged on this case surface and this microphone radio reception unit, and this microphone radio reception unit extracts this voice signal by this MIC.
8. sound control apparatus as claimed in claim 1 is characterized in that, this source of sound receiving element is the audio frequency connectivity port, in order to be electrically connected on this electronic installation corresponding audio connectivity port.
9. sound control apparatus as claimed in claim 1 is characterized in that, this source of sound receiving element is a wireless communication unit, in order to this sound source signal of wireless receiving.
10. sound control apparatus as claimed in claim 1 is characterized in that this audio output unit is the audio frequency connectivity port, is electrically connected on this Headphone device corresponding audio connectivity port.
11. sound control apparatus as claimed in claim 1 is characterized in that, this audio output unit is a wireless communication unit, this Composite tone of wireless output.
12. a portable voice control system is controlled the sound source signal that an electronic installation is sent, and it is characterized in that, comprising:
One Headphone device; And
One sound control apparatus comprises:
One source of sound receiving element selectively is coupled to this electronic installation, receives this sound source signal;
One sound synthesis module receives this sound source signal that a voice signal and this source of sound receiving element are received, and this sound source signal and this voice signal are synthesized a Composite tone; And
One audio output unit is exported this Composite tone to this Headphone device.
13. portable voice control system as claimed in claim 12 is characterized in that, this sound control apparatus also comprises:
One microphone radio reception unit, this voice signal that extracts this sound control apparatus outside is to be sent to this sound synthesis module.
14. portable voice control system as claimed in claim 12 is characterized in that, also comprises:
One external microphone has a microphone transmission unit, extracts this voice signal, and is sent to this sound control apparatus by this microphone transmission unit.
15. portable voice control system as claimed in claim 14 is characterized in that, this sound control apparatus also comprises:
One microphone receiving element, it selectively is coupled to this microphone transmission unit, extracts this voice signal of this sound control apparatus outside;
Wherein, when this microphone receiving element was connected in this microphone transmission unit, this microphone radio reception unit extracted this voice signal from this external microphone.
16. portable voice control system as claimed in claim 12 is characterized in that, this Headphone device also comprises:
One module of raising one's voice is exported this Composite tone; And
One audio frequency input block selectively is coupled to this audio output unit, to transmit this Composite tone module of raising one's voice to this.
17. portable voice control system as claimed in claim 16 is characterized in that, this audio output unit is the audio frequency connectivity port, and this audio frequency input block is and this audio output unit corresponding audio connectivity port.
18. portable voice control system as claimed in claim 16 is characterized in that, this audio output unit and this audio frequency input block all are wireless communication unit, wireless respectively output and import this Composite tone.
19. portable voice control system as claimed in claim 16 is characterized in that, when this audio output unit was connected in this audio frequency input block, this audio frequency input block transmitted this Composite tone to this audio frequency input block.
20. portable voice control system as claimed in claim 12 is characterized in that, when this source of sound receiving element and this electronic installation coupled, this source of sound receiving element received this sound source signal.
21. portable voice control system as claimed in claim 20 is characterized in that, this source of sound receiving element is the audio frequency connectivity port, is electrically connected on this electronic installation corresponding audio connectivity port.
22. portable voice control system as claimed in claim 20 is characterized in that, this source of sound receiving element is a wireless communication unit, this sound source signal of wireless receiving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201631316U CN201440322U (en) | 2009-07-13 | 2009-07-13 | Portable voice-control system and voice-control device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201631316U CN201440322U (en) | 2009-07-13 | 2009-07-13 | Portable voice-control system and voice-control device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN201440322U true CN201440322U (en) | 2010-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201631316U Expired - Fee Related CN201440322U (en) | 2009-07-13 | 2009-07-13 | Portable voice-control system and voice-control device thereof |
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| CN (1) | CN201440322U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106340288A (en) * | 2016-10-12 | 2017-01-18 | 刘冬来 | Multifunctional mini portable karaoke device |
| CN109218884A (en) * | 2018-08-29 | 2019-01-15 | 北京云迹科技有限公司 | Outer audio equipment for robot and the robot using the audio frequency apparatus |
-
2009
- 2009-07-13 CN CN2009201631316U patent/CN201440322U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106340288A (en) * | 2016-10-12 | 2017-01-18 | 刘冬来 | Multifunctional mini portable karaoke device |
| CN109218884A (en) * | 2018-08-29 | 2019-01-15 | 北京云迹科技有限公司 | Outer audio equipment for robot and the robot using the audio frequency apparatus |
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