CN106095380A - Sound signal acquisition method and device - Google Patents

Abstract

The invention discloses a sound signal acquisition method and device. The method is applied to a mobile terminal, the mobile terminal is provided with a first sound collector and a second sound collector, and the method comprises the following steps: A. respectively acquiring a first sound signal and a second sound signal of the external environment of the mobile terminal, which are acquired by a first sound collector and a second sound collector; B. comparing a first audio parameter of the first sound signal with a second audio parameter of the second sound signal, and generating a first comparison result, wherein the first audio parameter comprises a first signal amplitude of the first sound signal, and the second audio parameter comprises a second signal amplitude of the second sound signal; C. and selecting the sound signal collected by at least one of the first sound collector and the second sound collector according to the first comparison result. The method and the device can avoid the situation that the mobile terminal cannot accurately and clearly acquire the sound of the external environment of the mobile terminal due to the fact that the sound inlet hole of the mobile terminal is shielded.

Description

Sound signal acquisition method and device

technical field

The invention belongs to the technical field of sound signal acquisition, and in particular relates to a sound signal acquisition method and device.

Background technique

The microphone circuit of a traditional mobile terminal (for example, a mobile phone) is generally arranged at the bottom of the mobile terminal, and the shape of the sound inlet of the microphone circuit is generally circular or oval.

When the user holds the mobile terminal with one hand to make a call, the sound inlet hole is often blocked by the user's hand, so that the mobile terminal cannot accurately and clearly obtain the user's voice, which will cause the other party in the call to Can't hear the call clearly.

Since the gestures of different users holding the mobile terminal are different, no matter where the microphone circuit is located at the bottom of the mobile terminal, the sound inlet hole of the microphone circuit may be used by the user. hand covering.

Therefore, it is necessary to propose a new technical solution to solve the above technical problems.

Contents of the invention

The purpose of the present invention is to provide a sound signal acquisition method and device, which can prevent the mobile terminal from being unable to accurately and clearly acquire the sound of the external environment of the mobile terminal due to the blocked sound inlet of the mobile terminal.

In order to solve the above technical problems, the technical solution of the present invention is as follows:

A sound signal acquisition method, applied to a mobile terminal, the mobile terminal has a first sound collector and a second sound collector, and the method includes the following steps: A. Obtaining the first sound collector and the first sound collector respectively The first sound signal and the second sound signal of the external environment of the mobile terminal collected by the second sound collector; B. comparing the first audio parameter of the first sound signal with the second sound signal of the second sound signal audio parameters, and generate a first comparison result, wherein the first audio parameters include a first signal amplitude of the first sound signal, and the second audio parameters include a second signal amplitude of the second sound signal; C. Select the sound signal collected by at least one of the first sound collector and the second sound collector according to the first comparison result.

In the above sound signal acquisition method, the step B is: comparing the first signal amplitude and the second signal amplitude with a first predetermined value respectively, and generating the first comparison result.

In the above sound signal acquisition method, the step C includes: when the first comparison result is that the first signal amplitude of the first sound signal and the second signal amplitude of the second sound signal are both When the value is greater than or equal to the first predetermined value, the sound signal collected by at least one of the first sound collector and the second sound collector is selected.

In the above sound signal acquisition method, the step C includes: when the first comparison result is that the amplitude of the first signal is greater than or equal to the first predetermined value, and the amplitude of the second signal is smaller than the first In the case of a predetermined value, select the sound signal collected by the first sound collector; when the first comparison result is that the amplitude of the second signal is greater than or equal to the first predetermined value, and the first signal When the amplitude is smaller than the first predetermined value, the sound signal collected by the second sound collector is selected.

In the above-mentioned sound signal acquisition method, the step C includes: selecting the The sound signals collected by the first sound collector and the second sound collector, wherein the sound signals collected by the first sound collector and the second sound collector are used as an integrated sound signal Original signal; after the step C, the method also includes the following steps: D, integrating the sound signals collected by the first sound collector and the second sound collector, and generating the integrated sound Signal.

A sound signal acquisition device, applied to a mobile terminal, the mobile terminal has a first sound collector and a second sound collector, the device includes: an acquisition module, used to respectively acquire the first sound collector and the second sound collector The first sound signal and the second sound signal of the external environment of the mobile terminal collected by the second sound collector; the comparison module is used to compare the first audio parameter of the first sound signal with the second sound signal, and generate a first comparison result, wherein the first audio parameter includes a first signal amplitude of the first sound signal, and the second audio parameter includes a first signal amplitude of the second sound signal. 2. Signal amplitude; a selection module, configured to select the sound signal collected by at least one of the first sound collector and the second sound collector according to the first comparison result.

In the above sound signal acquisition device, the comparison module is configured to compare the first signal amplitude and the second signal amplitude with a first predetermined value respectively, and generate the first comparison result.

In the above-mentioned sound signal acquisition device, the selection module is configured to determine that the first signal amplitude of the first sound signal and the second signal amplitude of the second sound signal are equal to each other when the first comparison result is When the value is greater than or equal to the first predetermined value, the sound signal collected by at least one of the first sound collector and the second sound collector is selected.

In the above-mentioned sound signal acquisition device, the selection module is configured to, when the first comparison result is that the first signal amplitude is greater than or equal to the first predetermined value, and the second signal amplitude is smaller than the first In the case of a predetermined value, select the sound signal collected by the first sound collector, and be used to select the sound signal collected by the first sound collector, and for the second signal amplitude to be greater than or equal to the first predetermined value when the first comparison result is greater than or equal to the first predetermined value, and the When the amplitude of the first signal is smaller than the first predetermined value, the sound signal collected by the second sound collector is selected.

In the above-mentioned sound signal acquisition device, the selection module is configured to select the The sound signals collected by the first sound collector and the second sound collector, wherein the sound signals collected by the first sound collector and the second sound collector are used as an integrated sound signal Original signal; the device further includes: an integration module, configured to integrate the sound signals collected by the first sound collector and the second sound collector, and generate the sound integrated signal.

Compared with the prior art, the present invention can prevent the mobile terminal from being unable to accurately and clearly acquire the sound of the external environment of the mobile terminal due to the blocked sound inlet of the mobile terminal.

Description of drawings

Fig. 1 is a block diagram of the sound signal acquisition device of the present invention.

Fig. 2 and Fig. 3 are flow charts of the sound signal acquisition method of the present invention.

detailed description

Referring to the drawings, like reference symbols represent like components. The following description is based on illustrated specific embodiments of the invention, which should not be construed as limiting other specific embodiments of the invention not described in detail herein.

The sound signal acquisition device and method of the present invention can be implemented (applied) in mobile terminals, and the mobile terminals can be, for example, electronic devices such as smart phones and tablet computers. The mobile terminal has a first sound collector (first sound acquirer) and a second sound collector (second sound acquirer).

The sound signal acquisition device and method of this embodiment can be applied to a scene or mode of a voice call.

Referring to FIG. 1, FIG. 1 is a block diagram of the sound signal acquisition device of the present invention.

The sound signal acquisition device of this embodiment includes an acquisition module 101 , a comparison module 102 , and a selection module 103 .

The acquiring module 101 is configured to respectively acquire a first sound signal and a second sound signal of the external environment of the mobile terminal collected by the first sound collector and the second sound collector. Wherein, the first sound collector and the second sound collector are respectively located at a first position and a second position of the mobile terminal. That is, the acquiring module 101 is configured to respectively acquire the first sound signal collected by the first sound collector at the first position and the signal collected by the second sound collector at the second position. Second sound signal.

The comparison module 102 is configured to compare a first audio parameter of the first sound signal with a second audio parameter of the second sound signal, and generate a first comparison result, wherein the first audio parameter includes the The first signal amplitude of the first sound signal, the second audio parameter includes the second signal amplitude of the second sound signal.

The selection module 103 is configured to select the sound signal collected by at least one of the first sound collector and the second sound collector according to the first comparison result.

The comparison module 102 is configured to respectively compare the first signal amplitude and the second signal amplitude with a first predetermined value, and generate the first comparison result.

In the first embodiment of the sound signal acquisition device of the present invention, the selection module 103 is used to determine whether the first comparison result is the first signal amplitude of the first sound signal and the second sound signal When the second signal amplitudes are greater than or equal to a first predetermined value, select the sound signal collected by one of the first sound collector and the second sound collector.

Wherein, the sound signal collected by the first sound collector may be the above-mentioned first sound signal, or another sound signal (for example, a third sound signal) different from the first sound signal; The sound signal collected by the second sound collector can be the above-mentioned second sound signal, or another sound signal (for example, the fourth sound signal) different from the second sound signal;

The second embodiment of the sound signal acquisition device of the present invention is similar to the above-mentioned first embodiment, except that:

The selection module 103 is configured to select if the first comparison result is that the amplitude of the first signal is greater than or equal to the first predetermined value and the amplitude of the second signal is smaller than the first predetermined value. The sound signal collected by the first sound collector, and used for the second signal amplitude is greater than or equal to the first predetermined value when the first comparison result is greater than or equal to the first predetermined value, and the first signal amplitude is smaller than the In the case of the first predetermined value, the sound signal collected by the second sound collector is selected.

The third embodiment of the sound signal acquisition device of the present invention is similar to the above-mentioned first embodiment or the second embodiment, except that:

The selection module 103 is configured to select the first sound collector and the first sound collector if the first comparison result is that the first signal amplitude and the second signal amplitude are both smaller than the first predetermined value. The sound signal collected by the second sound collector, wherein the sound signals collected by the first sound collector and the second sound collector are used as the original signal integrated into the sound integration signal.

In this embodiment, the device also includes:

An integration module, configured to integrate the sound signals collected by the first sound collector and the second sound collector, and generate the sound integrated signal.

As an improvement, any one of the first to third embodiments above may also include the following technical solutions:

The acquiring module 101 is configured to acquire the sound of the external environment of the mobile terminal at the first position and the second position of the mobile terminal respectively, and generate a first sound signal and a second sound signal.

The acquisition module 101 includes at least a first sound acquirer and a second sound acquirer, the first sound acquirer is set at the first position of the mobile terminal, and the second sound acquirer is set at the mobile terminal At the second position of the terminal, the first sound acquirer and the second sound acquirer are both used to acquire the sound of the external environment of the mobile terminal, and generate the first sound signal and the second sound signal respectively. sound signal.

Specifically, when the mobile terminal is in a call state, the first sound acquirer is used to acquire the sound of the external environment of the mobile terminal at the first position of the mobile terminal, and generate the first sound signal The second sound acquirer is configured to acquire the sound of the external environment of the mobile terminal at the second position of the mobile terminal, and generate the second sound signal.

The first position may be, for example, the lower left corner of the front of the mobile terminal or the left of the bottom, and the second position may be, for example, the lower right of the front of the mobile terminal or the right of the bottom.

The comparison module 102 is configured to compare the first signal amplitude of the first sound signal with the second signal amplitude of the second sound signal, and generate a first comparison result.

The first signal amplitude may be, for example, the amplitude of an analog signal corresponding to the first sound signal, and the second signal amplitude may, for example, be the amplitude of an analog signal corresponding to the second sound signal.

The selection module 103 is configured to select one of the first sound signal and the second sound signal according to the first comparison result, and convert the selected first sound signal and the second sound signal One of the signals is output to a control circuit of the mobile terminal.

Specifically, the selection module 103 is a selection switch, and the selection switch is used to output one of the first sound signal and the second sound signal to the control circuit according to the first comparison result.

In the sound signal acquisition device of this embodiment, the selection module 103 is configured to convert the first sound signal to output to the control circuit of the mobile terminal, and used to output the second sound signal to the The control circuit of the mobile terminal.

In the sound signal acquisition device of this embodiment, the comparison module 102 is further configured to compare whether the signal amplitude of the selected one of the first sound signal and the second sound signal is A signal amplitude greater than a non-selected one of the first sound signal and the second sound signal by a second predetermined value and generating a second comparison result. Wherein, the value of the predetermined time may be in the range of 0.1 second to 30 seconds, for example, the predetermined time is 0.1 second, 0.2 second, 0.3 second, 0.5 second, 0.8 second, 0.9 second, 1.2 second, 1.5 second , 1.9 seconds, 2.2 seconds, 2.5 seconds, 2.8 seconds, 3.3 seconds, 3.8 seconds, 4.2 seconds, 4.9 seconds, 5.4 seconds, 6.0 seconds, 7.1 seconds, 8.3 seconds, 9.5 seconds, 10.4 seconds, 11.8 seconds, 12.9 seconds, 13.7 seconds seconds, 14.5 seconds, 15.8 seconds, 17.3 seconds, 18.1 seconds, 19.2 seconds, 20.0 seconds, 20.8 seconds, 21.7 seconds, 22.5 seconds, 23.1 seconds, 23.9 seconds, 24.6 seconds, 25.2 seconds, 25.9 seconds, 26.4 seconds, 26.9 seconds, 27.3 seconds, 27.6 seconds, 28.0 seconds, 28.3 seconds, 28.7 seconds, 28.9 seconds, 29.1 seconds, 29.4 seconds, 29.6 seconds, 29.8 seconds, 29.9 seconds, 30.0 seconds.

The selection module 103 is further configured to, when the second comparison result is that the signal amplitude of the selected one of the first sound signal and the second sound signal is greater than that of the first sound signal and the second sound signal. When the signal amplitude of the unselected one of the two sound signals is smaller than the second predetermined value, output the unselected one of the first sound signal and the second sound signal to the controller circuit.

In the sound signal acquisition device of this embodiment, the comparison module 102 is further configured to compare whether the first signal amplitude of the selected first sound signal is greater than that of the unselected first sound signal when the predetermined time arrives. The second signal amplitude of the second sound signal is greater than the second predetermined value, and the second comparison result is generated.

The selection module 103 is further configured to output the second sound signal to the The above control circuit.

In the sound signal acquisition device of this embodiment, the comparison module 102 is further configured to compare whether the second signal amplitude of the selected second sound signal is greater than that of the unselected second sound signal when the predetermined time arrives. The first signal amplitude of the first sound signal is greater than the second predetermined value, and a second comparison result is generated.

The selection module 103 is further configured to output the first sound signal to the The above control circuit.

In this embodiment, the second predetermined value may be, for example, 6 decibels.

Referring to Fig. 2 and Fig. 3, Fig. 2 and Fig. 3 are flow charts of the sound signal acquisition method of the present invention.

Acquisition method of sound signal of the present invention comprises the following steps:

A (step 201), the acquisition module 101 respectively acquires the first sound signal and the second sound signal of the external environment of the mobile terminal collected by the first sound collector and the second sound collector;

B (step 202), the comparison module 102 compares the first audio parameter of the first sound signal with the second audio parameter of the second sound signal, and generates a first comparison result, wherein the first audio a parameter comprising a first signal magnitude of said first sound signal, said second audio parameter comprising a second signal magnitude of said second sound signal;

C (step 203), the selection module 103 selects the sound signal collected by at least one of the first sound collector and the second sound collector according to the first comparison result.

Wherein, the step B (step 202) is:

The comparison module 102 compares the first signal amplitude and the second signal amplitude with a first predetermined value respectively, and generates the first comparison result.

In the first embodiment of the sound signal acquisition method of the present invention, the step C (step 203) includes:

Step 2031, when the first comparison result of the selection module 103 is that both the first signal amplitude of the first sound signal and the second signal amplitude of the second sound signal are greater than or equal to a first predetermined value, select the sound signal collected by at least one of the first sound collector and the second sound collector.

The second embodiment of the sound signal acquisition method of the present invention is similar to the above-mentioned first embodiment, except that:

The step C (the step 203) includes:

Step 2032, when the first comparison result of the selection module 103 is that the amplitude of the first signal is greater than or equal to the first predetermined value and the amplitude of the second signal is smaller than the first predetermined value, selecting the sound signal collected by the first sound collector;

Step 2033, when the first comparison result of the selection module 103 is that the amplitude of the second signal is greater than or equal to the first predetermined value, and the amplitude of the first signal is smaller than the first predetermined value, Selecting the sound signal collected by the second sound collector.

The third embodiment of the sound signal acquisition method of the present invention is similar to the first embodiment or the second embodiment above, except that:

The step C (the step 203) includes:

Step 2034, the selection module 103 selects the first sound collector and The sound signal collected by the second sound collector, wherein the sound signals collected by the first sound collector and the second sound collector are used as an original signal integrated into a sound integration signal;

After the step C (the step 203), the method also includes the following steps:

D. The integrating module integrates the sound signals collected by the first sound collector and the second sound collector, and generates the sound integrated signal.

As an improvement, any one of the first to third embodiments above may also include the following technical solutions:

Acquisition method of sound signal of the present invention comprises the following steps:

E. The acquiring module 101 respectively acquires the sound of the external environment of the mobile terminal at the first position and the second position of the mobile terminal, and generates a first sound signal and a second sound signal.

The acquisition module 101 includes at least a first sound acquirer and a second sound acquirer, the first sound acquirer is set at the first position of the mobile terminal, and the second sound acquirer is set at the mobile terminal At the second position of the terminal, the first sound acquirer and the second sound acquirer acquire the sound of the external environment of the mobile terminal, and generate the first sound signal and the second sound signal respectively.

Specifically, when the mobile terminal is in a call state, the first sound acquirer acquires the sound of the external environment of the mobile terminal at the first position of the mobile terminal, and generates the first sound signal, The second sound acquirer acquires the sound of the external environment of the mobile terminal at the second location of the mobile terminal, and generates the second sound signal.

The first position may be, for example, the lower left corner of the front of the mobile terminal or the left of the bottom, and the second position may be, for example, the lower right of the front of the mobile terminal or the right of the bottom.

F. The comparison module 102 compares the first signal amplitude of the first sound signal with the second signal amplitude of the second sound signal, and generates a first comparison result.

The first signal amplitude may be, for example, the amplitude of an analog signal corresponding to the first sound signal, and the second signal amplitude may, for example, be the amplitude of an analog signal corresponding to the second sound signal.

G. The selection module 103 selects one of the first sound signal and the second sound signal according to the first comparison result, and the selected first sound signal and the second sound signal One of the signals is output to a control circuit of the mobile terminal.

Specifically, the selection module 103 is a selection switch, and the selection switch outputs one of the first sound signal and the second sound signal to the control circuit according to the first comparison result.

In the sound signal acquisition method of this embodiment, the step G includes:

g1. The selection module 103 outputs the first sound signal to the control circuit of the mobile terminal when the first comparison result is that the amplitude of the first signal is greater than the amplitude of the second signal .

g2. The selection module 103 outputs the second sound signal to the control circuit of the mobile terminal when the first comparison result is that the amplitude of the second signal is greater than the amplitude of the first signal .

In the sound signal acquisition method of this embodiment, after the step G, the method further includes the following steps:

H. The comparison module 102 compares whether the signal amplitude of the selected one of the first sound signal and the second sound signal is greater than that of the first sound signal and the second sound signal when the predetermined time arrives. The signal amplitude of the unselected one of the sound signals is greater than a second predetermined value, and a second comparison result is generated. Wherein, the value of the predetermined time may be in the range of 0.1 second to 30 seconds, for example, the predetermined time is 0.1 second, 0.2 second, 0.3 second, 0.5 second, 0.8 second, 0.9 second, 1.2 second, 1.5 second , 1.9 seconds, 2.2 seconds, 2.5 seconds, 2.8 seconds, 3.3 seconds, 3.8 seconds, 4.2 seconds, 4.9 seconds, 5.4 seconds, 6.0 seconds, 7.1 seconds, 8.3 seconds, 9.5 seconds, 10.4 seconds, 11.8 seconds, 12.9 seconds, 13.7 seconds seconds, 14.5 seconds, 15.8 seconds, 17.3 seconds, 18.1 seconds, 19.2 seconds, 20.0 seconds, 20.8 seconds, 21.7 seconds, 22.5 seconds, 23.1 seconds, 23.9 seconds, 24.6 seconds, 25.2 seconds, 25.9 seconds, 26.4 seconds, 26.9 seconds, 27.3 seconds, 27.6 seconds, 28.0 seconds, 28.3 seconds, 28.7 seconds, 28.9 seconds, 29.1 seconds, 29.4 seconds, 29.6 seconds, 29.8 seconds, 29.9 seconds, 30.0 seconds.

1. The second comparison result of the selection module 103 is that the signal amplitude of the selected one of the first sound signal and the second sound signal is greater than that of the first sound signal and the second sound signal. when the signal amplitude of the unselected one of the audio signals is smaller than the second predetermined value, outputting the unselected one of the first audio signal and the second audio signal to the control circuit .

In the sound signal acquisition method of this embodiment, after the step g1, the step H includes:

h1. When the predetermined time arrives, the comparison module 102 compares whether the first signal amplitude of the selected first sound signal is higher than the second signal amplitude of the unselected second sound signal The second predetermined value is larger, and the second comparison result is generated.

After the step h1, the step I includes:

i1. The selection module 103 outputs the second sound signal to the Control circuit.

In the sound signal acquisition method of this embodiment, after the step g2, the step H includes:

h2. When the predetermined time arrives, the comparison module 102 compares whether the second signal amplitude of the selected second sound signal is higher than the first signal amplitude of the unselected first sound signal The second predetermined value is larger, and a second comparison result is generated.

After said step h2, said step 1 comprises:

i2. The selection module 103 outputs the first sound signal to the Control circuit.

In this embodiment, the second predetermined value may be, for example, 6 decibels.

Concrete technical scheme of the present invention is:

Both the first sound acquirer and the second sound acquirer are microphone circuits, and the two microphone circuits are respectively arranged on the left and right sides of the bottom surface of the mobile terminal (mobile phone), and the comparison module 102 calculates the first sound in real time. There is a signal amplitude difference between the first sound signal and the second sound signal acquired by the first sound acquirer and the second sound acquirer, and the selection module 103 uses a microphone circuit with a high signal strength as the pickup microphone. In the case where the first sound acquirer is used as the pickup microphone, if the first sound acquired by the first sound acquirer is The first signal amplitude of the sound signal is reduced, and when the first signal amplitude is reduced to 6 decibels less than the second signal amplitude (there is a significant difference), the selection module 103 switches the pickup microphone, and The second sound acquirer serves as the sound pickup microphone. Considering the power consumption, the detection period of the microphone circuit without a pickup microphone can be set to about 30 seconds.

Through the above technical solution, the present invention can prevent the mobile terminal from being unable to accurately and clearly acquire the sound of the external environment of the mobile terminal due to the blocked sound inlet of the mobile terminal.

In summary, although the embodiments of the present invention are disclosed above, the above embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and modifications without departing from the spirit and scope of the present invention. , so the protection scope of the present invention shall be determined by the scope defined in the claims.

Claims (10)

1. an acoustical signal acquisition methods, is applied to mobile terminal, it is characterised in that described mobile terminal has the first sound Harvester and the second sound collector, said method comprising the steps of:

A, obtain described first sound collector and outside described mobile terminal that described second sound collector is gathered respectively First acoustical signal of portion's environment and second sound signal；

First audio frequency parameter of the first acoustical signal described in B, comparison and the second audio frequency parameter of described second sound signal, and raw Becoming the first comparative result, wherein, described first audio frequency parameter includes the first signal amplitude of described first acoustical signal, described Two audio frequency parameters include the secondary signal amplitude of described second sound signal；

C, select at least in described first sound collector, described second sound collector according to described first comparative result The acoustical signal that person is gathered.

Acoustical signal acquisition methods the most according to claim 1, it is characterised in that described step B is:

Described first signal amplitude, described secondary signal amplitude are compared with the first predetermined value respectively, and generates described One comparative result.

Acoustical signal acquisition methods the most according to claim 2, it is characterised in that described step C includes:

At described first signal amplitude that described first comparative result is described first acoustical signal and described second sound signal Described secondary signal amplitude be all higher than or equal in the case of the first predetermined value, select described first sound collector, described The acoustical signal that at least one in second sound collector is gathered.

Acoustical signal acquisition methods the most according to claim 2, it is characterised in that described step C includes:

It is that described first signal amplitude is more than or equal to described first predetermined value at described first comparative result, and described second believes Number amplitude, less than in the case of described first predetermined value, selects the acoustical signal that described first sound collector is gathered；

It is that described secondary signal amplitude is more than or equal to described first predetermined value at described first comparative result, and described first believes Number amplitude, less than in the case of described first predetermined value, selects the acoustical signal that described second sound collector is gathered.

Acoustical signal acquisition methods the most according to claim 2, it is characterised in that described step C includes:

It is described first signal amplitude and described secondary signal amplitude is respectively less than described first and makes a reservation at described first comparative result In the case of value, select the acoustical signal that described first sound collector and described second sound collector are gathered, wherein, institute State the first sound collector and acoustical signal that described second sound collector is gathered is for integrating letter as being integrated into sound Number primary signal；

After described step C, described method is further comprising the steps of:

D, the acoustical signal that described first sound collector and described second sound collector are gathered is integrated, and generate Described sound integrated signal.

6. an acoustical signal acquisition device, is applied to mobile terminal, it is characterised in that described mobile terminal has the first sound Harvester and the second sound collector, described device includes:

Acquisition module, for the described shifting obtaining described first sound collector respectively and described second sound collector is gathered First acoustical signal of the external environment condition of dynamic terminal and second sound signal；

Comparison module, for the first audio frequency parameter and second sound of described second sound signal of relatively described first acoustical signal Frequently parameter, and generate the first comparative result, wherein, described first audio frequency parameter includes the first signal of described first acoustical signal Amplitude, described second audio frequency parameter includes the secondary signal amplitude of described second sound signal；

Select module, for selecting described first sound collector, described second sound collection according to described first comparative result The acoustical signal that at least one in device is gathered.

Acoustical signal acquisition device the most according to claim 6, it is characterised in that described comparison module is for by described the One signal amplitude, described secondary signal amplitude compare with the first predetermined value respectively, and generate described first comparative result.

Acoustical signal acquisition device the most according to claim 7, it is characterised in that described selection module is for described the One comparative result is described first signal amplitude and described second letter of described second sound signal of described first acoustical signal Number amplitude is all higher than or equal in the case of the first predetermined value, selects described first sound collector, described second sound collection The acoustical signal that at least one in device is gathered.

Acoustical signal acquisition device the most according to claim 7, it is characterised in that described selection module is for described the One comparative result is that described first signal amplitude is more than or equal to described first predetermined value, and described secondary signal amplitude is less than institute In the case of stating the first predetermined value, select the acoustical signal that described first sound collector is gathered, and for described the One comparative result is that described secondary signal amplitude is more than or equal to described first predetermined value, and described first signal amplitude is less than institute In the case of stating the first predetermined value, select the acoustical signal that described second sound collector is gathered.

Acoustical signal acquisition device the most according to claim 7, it is characterised in that described selection module is for described First comparative result is described first signal amplitude and in the case of described secondary signal amplitude is respectively less than described first predetermined value, Select the acoustical signal that described first sound collector and described second sound collector are gathered, wherein, described first sound The acoustical signal that harvester and described second sound collector are gathered is for as the original letter being integrated into sound integrated signal Number；

Described device also includes:

Integrate module, for being carried out by the acoustical signal that described first sound collector and described second sound collector are gathered Integrate, and generate described sound integrated signal.