CN106162428B - Audio output device, electronic equipment and audio output method - Google Patents
Audio output device, electronic equipment and audio output method Download PDFInfo
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Abstract
The invention discloses an audio output device, an electronic device and an audio output method, wherein the audio output device comprises: the audio processor is used for processing the original audio data to generate first frequency band audio data and second frequency band audio data; the first audio output module is used for outputting the first frequency band audio data; a first housing accommodating the audio processor and the first audio output module therein; the second audio output module is arranged outside the first shell and used for outputting the second frequency band audio data; the invention can obviously improve the output effect of the low-frequency audio data.
Description
Technical Field
The invention relates to the technical field of electronic equipment, in particular to an audio output device, electronic equipment and an audio output method.
Background
With the continuous development of the electronic industry, the electronic device is designed to be more and more light and thin, and accordingly, the space provided by the electronic device for each module is smaller and smaller.
The module of the electronic device for outputting audio is a speaker module, and the size of the space where the speaker module is located affects the sound effect, especially the low frequency effect, output by the speaker module. When the space provided by the electronic device to the speaker module is small, it may cause the low frequency effect of the audio output by the speaker module to be deteriorated.
In the prior art, the low-frequency effect output by the speaker module can be improved by reducing the loudness, but the method cannot give consideration to the loudness and the low frequency, so that the significance of the effect of improving the low frequency is poor.
Disclosure of Invention
In view of this, the present invention provides an audio output device, an electronic apparatus, and an audio output method, so as to solve the technical problem in the prior art that the low-frequency effect output by a speaker module is improved by reducing the loudness, but the method cannot give consideration to both the loudness and the low frequency, so that the effect of improving the low frequency is less significant.
In order to achieve the purpose, the invention provides the following technical scheme:
an audio output device, the audio output device comprising:
the audio processor is used for processing the original audio data to generate first frequency band audio data and second frequency band audio data;
the first audio output module is used for outputting the first frequency band audio data;
a first housing accommodating the audio processor and the first audio output module therein;
and the second audio output module is arranged outside the first shell and used for outputting the second frequency band audio data.
Preferably, the frequency of the first frequency band audio data is higher than the frequency of the second frequency band audio data.
Preferably, the first audio output module is a speaker, and the second audio output module is a low-frequency output device.
Preferably, the low frequency output means includes:
the low-frequency output body is used for outputting first sub-frequency band audio data;
the first component is connected with the low-frequency output body and provided with a sound outlet through hole for outputting second sub-frequency band audio data;
the second frequency band audio data comprises the first frequency sub-band audio data and the second frequency sub-band audio data; the frequency of the first sub-band audio data is higher than the frequency of the second sub-band audio data.
Preferably, the first housing is a housing of an electronic device, and the audio output device further includes:
the accommodating device accommodates the low-frequency output device and the interior of the low-frequency output device;
the accommodating device is an external hanging part of the electronic equipment.
Preferably, a sound outlet hole is formed in the housing of the accommodating device.
Preferably, the sound emitting hole is provided at a position corresponding to the sound emitting through hole of the first member.
Preferably, the accommodating device is an adapter for charging the electronic device.
Preferably, the audio output device further includes:
the first power amplifier is used for amplifying the second frequency band audio data;
the second audio output module is specifically connected with the audio processor through the first power amplifier.
Preferably, the audio processor specifically includes:
the band-pass filter is connected with the second audio output module and is used for filtering audio data lower than the first frequency and higher than the second frequency;
the second power amplifier is connected with the first audio output module and used for amplifying the first frequency band audio data;
the processing chip is respectively connected with the band-pass filter and the power amplifier and is used for processing original audio data when receiving the original audio data, sending the generated first frequency band audio data to the second power amplifier and sending the generated second frequency band audio data to the band-pass filter;
wherein the first frequency is lower than the second frequency, which is lower than the lowest frequency of the first frequency band audio data.
Preferably, the audio processor is connected to the second audio output module through a bass interface;
the audio processor is specifically configured to, when it is detected that the bass interface is connected to the second audio output module, send the second frequency band audio data to the second audio output module after determining that the low-frequency link is turned on.
An electronic device, characterized in that it comprises an audio output device as described in any one of the above.
An audio output method applied to an audio output device, the audio output device comprising:
a first audio output module;
a first housing accommodating the first audio output module;
the second audio output module is arranged outside the first shell;
the method comprises the following steps:
when original audio data are received, processing the original audio data to generate first frequency band audio data and second frequency band audio data;
controlling the first audio output module to output the first frequency band audio data;
and controlling the second audio output module to output the second frequency band audio data.
Preferably, before the controlling the second audio output module to output the second frequency band audio data, the method further includes:
amplifying the second frequency band audio data.
Preferably, before the controlling the second audio output module to output the second frequency band audio data, the method further includes:
filtering out audio data below a first frequency and above a second frequency;
the controlling the second audio output module to output the second frequency band audio data specifically includes:
controlling the second audio output module to output audio data between the first frequency and the second frequency;
wherein the first frequency is lower than the second frequency, which is lower than the lowest frequency of the first frequency band audio data.
Preferably, before filtering out the audio data below the first frequency and above the second frequency, the method further includes:
and carrying out smoothing processing on the second frequency band audio data.
As can be seen from the above technical solutions, compared with the prior art, the embodiment of the invention discloses an audio output device, which can output first frequency band audio data through a first audio output module and output second frequency band audio data through a second audio output module. And when the second frequency band audio data is the low frequency band audio data, the output effect of the low frequency band audio data can be obviously improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an audio output device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second audio output module according to a second embodiment of the present invention;
FIG. 3 is a frequency response diagram provided by the present invention;
fig. 4 is a schematic structural diagram of an audio output apparatus according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of an audio output device according to a fourth embodiment of the present invention;
fig. 6 is a schematic structural diagram of an audio processor according to a fifth embodiment of the present invention;
FIG. 7a is another frequency response diagram provided by an embodiment of the present invention;
FIG. 7b is a graph of another frequency response provided by an embodiment of the present invention;
fig. 8 is a flowchart illustrating an audio output method according to a seventh embodiment of the present invention;
fig. 9 is a flowchart illustrating an audio output method according to an eighth embodiment of the present invention;
fig. 10 is a flowchart illustrating an audio output method according to a ninth embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention discloses an audio output device, as shown in fig. 1, the audio output device may include: the audio processor 100, the first audio output module 200, the first housing 300, and the second audio output module 400.
The audio processor 100 may be configured to process raw audio data to generate first frequency band audio data and second frequency band audio data.
The first audio output module 200 is connected to the audio processor 100 and can be used for outputting audio data in the first frequency band.
The first casing 300 can accommodate the audio processor 100 and the first audio output module 200 therein.
The second audio output module 400 may be connected to the audio processor 100, and disposed outside the first casing 300 for outputting the second frequency band audio data.
It should be noted that the first housing may be a main housing of the electronic device, and accordingly, the audio processor and the first audio output module are located in the main housing of the electronic device, and the second audio output module is disposed outside the main housing of the electronic device.
In the present invention, the frequency of the first frequency band audio data is higher than the frequency of the second frequency band audio data, and the specific setting may be performed according to the actual situation, which is not limited in the present invention. For example, if the first frequency band audio data includes high frequency band audio data and mid frequency band audio data and the second frequency band audio data includes low frequency band audio data, then the first audio output module may be configured to output the high frequency band audio data and the mid frequency band audio data and the second audio output module may be configured to output the low frequency band audio data.
The present invention does not limit the specific implementation forms of the first audio output module and the second audio output module, for example, the first audio output module may be a speaker, and the second audio output module may be a low-frequency output device.
The low frequency output device may be a sound box, such as a subwoofer sound box.
In the embodiment of the invention, the first audio output module can output the first frequency band audio data, and the second audio output module can output the second frequency band audio data. And when the second frequency band audio data is the low frequency band audio data, the output effect of the low frequency band audio data can be obviously improved.
The second embodiment of the present invention further discloses an audio output device, which is different from the above embodiments in that the second audio output module disclosed in this embodiment is a specific structure of a low-frequency output device, and referring to fig. 2, the low-frequency output device may include: a low frequency output body 410 and a first part 420.
The low frequency output body 410 may be configured to output first sub-band audio data;
the first part 420 is connected to the low frequency output body 410, and the first part 420 is provided with a sound outlet through hole 421 for outputting the second sub-band audio data.
The second frequency band audio data comprises first frequency sub-band audio data and second frequency sub-band audio data, and the frequency of the first frequency sub-band audio data is higher than the frequency of the second frequency sub-band audio data.
It should be noted that the structure shown in fig. 2 is only one specific implementation of the low-frequency output device, and the invention is not limited to the specific structure of the low-frequency output device.
In the invention, the low-frequency output body outputs the first sub-frequency band audio data and the sound outlet through hole outputs the second sub-frequency band audio data, thereby effectively improving the effect of outputting the audio data by the low-frequency output device.
Referring to fig. 3, a frequency response curve of the low frequency output device experimentally simulated by the applicant is shown, wherein a curve S1 is a frequency response curve of the low frequency output device outputting only the second frequency band audio data through the audio output body. The curve S2 is a frequency response curve of the low-frequency output device outputting the first sub-band audio data through the audio output body and outputting the second sub-band audio data through the sound outlet through hole of the second component, and the rated power of the low-frequency output device is 1.5W. The curve S3 is also a frequency response curve of the low frequency output device outputting the first sub-band audio data through the audio output body and outputting the second sub-band audio data through the sound outlet through hole of the second member, and is different from the curve S2 in that the rated power of the low frequency output device is 1W.
In the curves S2 and S3, the audio data with the frequency of 200-400 is output from the sound outlet through hole of the second component, and the audio data with the frequency higher than 400 is output from the low-frequency output body, as is apparent from fig. 3, the audio data of the first sub-band is output through the low-frequency output body, and the audio data of the second sub-band is output through the sound outlet through hole, so that the effect of outputting the audio data by the low-frequency output device can be effectively improved.
The third embodiment of the present invention further discloses an audio output device, as shown in fig. 4, the audio output device may include: the audio processor 100, the first audio output module 200, the first housing 300, the second audio output module 400, and the accommodating device 500.
The audio processor 100 may be configured to process raw audio data to generate first frequency band audio data and second frequency band audio data.
The first audio output module 200 is connected to the audio processor 100 and can be used for outputting audio data in the first frequency band.
The first casing 300 can accommodate the audio processor 100 and the first audio output module 200 therein.
The second audio output module 400 may be connected to the audio processor 100, and disposed outside the first casing 300 for outputting the second frequency band audio data.
The first audio output module may be a speaker, and the second audio output module may be a low-frequency output device.
The accommodating device 500 accommodates the second audio output module 400 and the inside thereof;
since the second audio output module is located outside the first housing, the accommodating device accommodating the second audio output module is also located outside the first housing. The first shell can be a shell of the electronic device, and correspondingly, the accommodating device can be an external hanging part of the electronic device.
As a specific implementation, the receiving device may be an adapter for charging the electronic device, and the second audio output module may be disposed in the adapter due to a large space of the adapter. As another implementation, the accommodating device may also be a mouse connected to the electronic device.
In order to ensure the effect of the second frequency band audio data output by the second audio output module, a sound outlet hole may be provided on the housing of the accommodating device, and the specific arrangement position of the sound outlet hole is not limited in the present invention.
In the invention, in order to avoid the resonance of the accommodating device and an object for placing the accommodating device, such as a table, when the audio output device outputs audio data, and contact resonance sound is generated, a buffer component, such as a rubber strip, is arranged on the outer surface of the accommodating device, so that hard contact is avoided, and the resonance sound is eliminated.
The fourth embodiment of the present invention further discloses an audio output device, as shown in fig. 5, the audio output device may include: an audio processor 100, a first audio output module 200, a first housing 300, a second audio output module 400, and a first power amplifier 600; wherein:
the audio processor 100 may be configured to process raw audio data to generate first frequency band audio data and second frequency band audio data.
The first audio output module 200 is connected to the audio processor 100 and can be used for outputting audio data in the first frequency band.
The first casing 300 can accommodate the audio processor 100 and the first audio output module 200 therein.
The second audio output module 400 may be connected to the audio processor 100 through the first power amplifier 600; the first power amplifier may be configured to amplify the second frequency band audio data.
The second audio output module 400 is disposed outside the first housing 300 and configured to output the second frequency band audio data amplified by the first power amplifier.
The first audio output module may be a speaker, and the second audio output module may be a low-frequency output device.
It should be noted that the first power amplifier may be as shown in fig. 4, and may be disposed outside the first housing; of course, the present invention is not limited to the specific configuration, and the present invention may be disposed inside the first housing.
In this embodiment, the audio output device may further include a receiving device for receiving the second audio output module and the first power amplifier.
The fifth embodiment of the present invention discloses an audio output device, which is different from the above embodiments, and the fifth embodiment discloses a specific structure of an audio processor; referring to fig. 6, the audio processor may include a band pass filter 110, a second power amplifier 120, and a processing chip 130, wherein:
the band-pass filter 110 is connected to the second audio output module, and can be used for filtering audio data below the first frequency and above the second frequency;
it should be noted that, in order to ensure the audio effect of the audio data output by the second audio output module, higher audio data may be filtered; the second audio output module has the requirement of the lowest output frequency, so that the audio data of very low frequency which cannot be operated by the second audio output module can be filtered. Therefore, by setting the band-pass filter, the audio data below the first frequency and above the second frequency are filtered; the specific frequency values of the first frequency and the second audio frequency may be set according to user requirements or actual working conditions of the second audio output module, and the present invention is not limited in particular.
It should be noted that, when the audio output device includes the second power amplifier, the band-pass filter may be specifically connected to the second audio output module through the second power amplifier.
The second power amplifier 120 is configured to be connected to the first audio output module, and may be configured to amplify the first frequency band audio data; correspondingly, the first audio output module may be specifically configured to output the first frequency band audio data amplified by the second power amplifier.
The processing chip 130 is connected to the band-pass filter 110 and the power amplifier 120, respectively, and the processing chip 130 may be configured to process the original audio data when receiving the original audio data, send the generated first frequency band audio data to the second power amplifier, and send the generated second frequency band audio data to the band-pass filter;
wherein the first frequency is lower than the second frequency, and the second frequency is lower than the lowest frequency of the first frequency band audio data.
In the invention, the audio processor may be connected to the second audio output module through the bass interface, and the audio processor may be specifically configured to send the second frequency band audio data to the second audio output module after determining that the low frequency link is turned on when detecting that the bass interface is connected to the second audio output module.
In practical application, when the second audio output module is inserted into the audio processor, the audio output device is easy to generate a pop sound due to the change of the signal, and therefore, the audio processor can send the second frequency band audio data to the second audio output module after the second frequency band audio data is subjected to smoothing processing.
When the audio processor includes the band pass filter, the second power amplifier, and the processing chip, the processing chip may send the second frequency band audio data to the band pass filter after performing smoothing processing.
In the embodiment of the invention, the first audio output module can output the first frequency band audio data, and the second audio output module can output the second frequency band audio data. And when the second frequency band audio data is the low frequency band audio data, the output effect of the low frequency band audio data can be obviously improved.
The sixth embodiment of the invention discloses electronic equipment which comprises the audio output device in any one of the embodiments.
It should be noted that the first housing mentioned in the above embodiments may be a main housing of an electronic device.
In order to facilitate checking of the difference between the audio effect output by the electronic device provided with the audio output device of the present invention and the audio effect output by the existing electronic device, the applicant has simulated the frequency response curve of the electronic device provided with the audio output device of the present invention outputting the audio data and the frequency response curve of the existing electronic device outputting the audio data through experiments, and may refer to fig. 7a to 7b specifically.
In fig. 7a, S10 is a frequency response curve of the electronic device provided with the audio output apparatus of the present invention, which is provided with 10cc of the second audio output module, outputting audio data;
s20 is a frequency response curve of an existing electronic device outputting an audio output.
As can be seen from the figure, the low cutoff frequency of the audio data output by the conventional electronic device is about 700 Hz. And the low cut-off frequency of the electronic equipment provided with the audio output device is 280Hz, and the low-frequency effect between 300Hz and 400Hz is enhanced.
In fig. 7b, S30 is a frequency response curve of the electronic device provided with the audio output apparatus of the present invention provided with a second audio output module of 25cc outputting audio data;
s20 is a frequency response curve of an existing electronic device outputting an audio output.
As can be seen from the figure, the low cutoff frequency of the audio data output by the conventional electronic device is about 700 Hz. And the low cut-off frequency of the electronic equipment provided with the audio output device is 180Hz, and the low-frequency effect between 400Hz and 500Hz is enhanced.
Therefore, the audio output device of the invention obviously improves the output effect of the low-frequency audio data.
The seventh embodiment of the invention discloses an audio output method which can be applied to an audio output device, wherein the audio output device can comprise a first audio output module, a first shell for accommodating the first audio output module and a second audio output module arranged outside the first shell.
As shown in fig. 8, the method may include the steps of:
step 801: when original audio data are received, processing the original audio data to generate first frequency band audio data and second frequency band audio data;
step 802: controlling a first audio output module to output first frequency band audio data;
step 803: and controlling the second audio output module to output the second frequency band audio data.
Wherein, step 802 and step 803 can be performed simultaneously.
In the present invention, the frequency of the first frequency band audio data is higher than the frequency of the second frequency band audio data.
In the embodiment of the invention, the first audio output module can output the first frequency band audio data, and the second audio output module can output the second frequency band audio data. And when the second frequency band audio data is the low frequency band audio data, the output effect of the low frequency band audio data can be obviously improved.
The eighth embodiment of the present invention further discloses an audio output method, as shown in fig. 9, the method may include the following steps:
step 901: when original audio data are received, processing the original audio data to generate first frequency band audio data and second frequency band audio data;
step 902: amplifying the second frequency band audio data;
step 903: controlling a second audio output module to output the amplified second frequency band audio data;
step 904: and controlling the first audio output module to output the first frequency band audio data.
Preferably, before controlling the second audio output module to output the first frequency band audio data, the controlling may include: amplifying the first frequency band audio data; correspondingly, the first audio output module can be controlled to output the amplified first frequency band audio data.
The ninth embodiment of the present invention further discloses an audio output method, as shown in fig. 10, the method may include the following steps:
step 1001: when original audio data are received, processing the original audio data to generate first frequency band audio data and second frequency band audio data;
step 1002: filtering out audio data below a first frequency and above a second frequency;
step 1003: controlling the second audio output module to output audio data between the first frequency and the second frequency;
wherein the first frequency is lower than the second frequency, and the second frequency is lower than the lowest frequency of the first frequency band audio data.
It should be noted that, in order to ensure the audio effect of the audio data output by the second audio output module, higher audio data may be filtered; the second audio output module has the requirement of the lowest output frequency, so that the audio data of very low frequency which cannot be operated by the second audio output module can be filtered. Thus, audio data below the first frequency and above the second frequency may be filtered out; the specific frequency values of the first frequency and the second audio frequency may be set according to user requirements or actual working conditions of the second audio output module, and the present invention is not limited in particular.
After filtering out audio data below the first frequency and above the second frequency, amplifying the audio data between the first frequency and the second frequency; and then the second audio output module is controlled to output the amplified audio data between the first frequency and the second frequency.
Step 1004: and controlling the first audio output module to output the first frequency band audio data.
In the present invention, the main executing body of the method may be an audio processor, and when the second audio output module is inserted into the audio processor, the audio output device may easily generate a pop sound due to a change of the signal, and therefore, before filtering out audio data lower than the first frequency and higher than the second frequency, the method may further include: and performing smoothing processing on the second frequency band audio data.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (14)
1. An audio output apparatus, characterized in that the audio output apparatus comprises:
the audio processor is used for processing the original audio data to generate first frequency band audio data and second frequency band audio data;
the first audio output module is used for outputting the first frequency band audio data;
a first housing accommodating the audio processor and the first audio output module therein;
the second audio output module is arranged outside the first shell and used for outputting the second frequency band audio data;
the first audio output module is a loudspeaker, and the second audio output module is a low-frequency output device; the low frequency output device includes:
the low-frequency output body is used for outputting first sub-frequency band audio data;
the first component is connected with the low-frequency output body and provided with a sound outlet through hole for outputting second sub-frequency band audio data;
the second frequency band audio data comprises the first frequency sub-band audio data and the second frequency sub-band audio data; the frequency of the first sub-band audio data is higher than the frequency of the second sub-band audio data.
2. The apparatus of claim 1, wherein the frequency of the first band of audio data is higher than the frequency of the second band of audio data.
3. The apparatus of claim 1, wherein the first housing is a housing of an electronic device, the audio output apparatus further comprising:
the accommodating device accommodates the low-frequency output device and the interior of the low-frequency output device;
the accommodating device is an external hanging part of the electronic equipment.
4. The device of claim 3, wherein the housing of the holder has a sound outlet.
5. The device of claim 4, wherein the sound outlet hole is provided at a position corresponding to the sound outlet through hole of the first member.
6. The apparatus of claim 3, wherein the receiving device is an adapter for charging the electronic device.
7. The apparatus of claim 1, wherein the audio output device further comprises:
the first power amplifier is used for amplifying the second frequency band audio data;
the second audio output module is specifically connected with the audio processor through the first power amplifier.
8. The apparatus according to any one of claims 1 to 7, wherein the audio processor comprises:
the band-pass filter is connected with the second audio output module and is used for filtering audio data lower than the first frequency and higher than the second frequency;
the second power amplifier is connected with the first audio output module and used for amplifying the first frequency band audio data;
the processing chip is respectively connected with the band-pass filter and the power amplifier and is used for processing original audio data when receiving the original audio data, sending the generated first frequency band audio data to the second power amplifier and sending the generated second frequency band audio data to the band-pass filter;
wherein the first frequency is lower than the second frequency, which is lower than the lowest frequency of the first frequency band audio data.
9. The apparatus of claim 1, wherein the audio processor is connected to the second audio output module, in particular via a bass interface;
the audio processor is specifically configured to, when it is detected that the bass interface is connected to the second audio output module, send the second frequency band audio data to the second audio output module after determining that the low-frequency link is turned on.
10. An electronic device characterized by comprising the audio output apparatus of any one of claims 1 to 9.
11. An audio output method, applied to an audio output device, the audio output device comprising:
a first audio output module;
a first housing accommodating the first audio output module;
the second audio output module is arranged outside the first shell; the first audio output module is a loudspeaker, and the second audio output module is a low-frequency output device; the low frequency output device includes:
a low frequency output body;
the first component is connected with the low-frequency output body and is provided with a sound outlet through hole; the method comprises the following steps:
when original audio data are received, processing the original audio data to generate first frequency band audio data and second frequency band audio data;
controlling the first audio output module to output the first frequency band audio data;
controlling the second audio output module to output the second frequency band audio data; the second frequency band audio data comprises first frequency sub-band audio data and second frequency sub-band audio data; the frequency of the first sub-band audio data is higher than the frequency of the second sub-band audio data; the low-frequency output body is used for outputting the first sub-frequency band audio data; the first means is for outputting the second sub-band audio data.
12. The method of claim 11, wherein before controlling the second audio output module to output the second frequency band audio data, further comprising:
amplifying the second frequency band audio data.
13. The method of claim 11, wherein before controlling the second audio output module to output the second frequency band audio data, further comprising:
filtering out audio data below a first frequency and above a second frequency;
the controlling the second audio output module to output the second frequency band audio data specifically includes:
controlling the second audio output module to output audio data between the first frequency and the second frequency;
wherein the first frequency is lower than the second frequency, which is lower than the lowest frequency of the first frequency band audio data.
14. The method of claim 13, wherein prior to filtering out audio data below the first frequency and above the second frequency, further comprising:
and carrying out smoothing processing on the second frequency band audio data.
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| CN102845077A (en) * | 2010-08-12 | 2012-12-26 | Lg电子株式会社 | Speaker |
| CN103428607A (en) * | 2012-05-25 | 2013-12-04 | 华为技术有限公司 | Audio signal playing system and electronic device |
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| US8891803B2 (en) * | 2009-06-23 | 2014-11-18 | Flextronics Ap, Llc | Notebook power supply with integrated subwoofer |
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| CN102845077A (en) * | 2010-08-12 | 2012-12-26 | Lg电子株式会社 | Speaker |
| CN103428607A (en) * | 2012-05-25 | 2013-12-04 | 华为技术有限公司 | Audio signal playing system and electronic device |
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