CN107343105B - Audio data processing method and mobile terminal - Google Patents
Audio data processing method and mobile terminal Download PDFInfo
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- CN107343105B CN107343105B CN201710602810.8A CN201710602810A CN107343105B CN 107343105 B CN107343105 B CN 107343105B CN 201710602810 A CN201710602810 A CN 201710602810A CN 107343105 B CN107343105 B CN 107343105B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
- H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/64—Automatic arrangements for answering calls; Automatic arrangements for recording messages for absent subscribers; Arrangements for recording conversations
- H04M1/65—Recording arrangements for recording a message from the calling party
- H04M1/6505—Recording arrangements for recording a message from the calling party storing speech in digital form
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/7243—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/7243—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages
- H04M1/72433—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages for voice messaging, e.g. dictaphones
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
- G11B2020/1062—Data buffering arrangements, e.g. recording or playback buffers
- G11B2020/10675—Data buffering arrangements, e.g. recording or playback buffers aspects of buffer control
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Abstract
The invention provides an audio data processing method and a mobile terminal, and relates to the technical field of communication, wherein the method comprises the following steps: the method comprises the steps of caching audio data collected by a mobile terminal to obtain audio data to be processed, scanning a bandwidth corresponding to the audio data to be processed, obtaining a recording sampling rate corresponding to the bandwidth corresponding to the audio data to be processed, and storing the audio data to be processed according to the recording sampling rate. Under the condition that the quality of the audio data is not influenced, the actually required recording sampling rate of the audio data to be processed can be determined according to the bandwidth corresponding to the audio data to be processed, so that the audio data to be processed can be stored according to the determined recording sampling rate, the audio data to be processed can be stored according to the actually corresponding recording sampling rate, the condition that the audio data with smaller bandwidth is stored by adopting a higher sampling rate is avoided, and the problems that more storage space is occupied and the storage space is wasted are solved.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to an audio data processing method and a mobile terminal.
Background
With the continuous development of communication technology, the mobile terminal can record audio data and select the sampling rate of the recorded audio data. The sampling rate is the number of times audio data is sampled in one second, and the higher the sampling rate is, the higher the restoration degree of the audio data is.
In the related art, in order to highly restore real audio data, a high-sampling-rate acquisition mode and a high-sampling-rate storage mode are generally adopted to record the audio data. Specifically, after the mobile terminal detects a recording operation triggered by a user, the mobile terminal may collect and store audio data into the cache space according to a sampling rate selected by the user, and then store the audio data in the cache space according to the sampling rate selected by the user, thereby completing recording of the audio data.
However, in the storage process, because the corresponding bandwidths of the audio data at different times are different, and the sampling rates required by different bandwidths are also different, part of the audio data with smaller bandwidths are also stored according to the uniform sampling rate, which may cause a problem of wasting storage space.
Disclosure of Invention
The invention provides an audio data processing method and a mobile terminal, and aims to solve the problem of storage space waste caused by storing audio data according to a uniform sampling rate in the prior art.
According to a first aspect of the present invention, there is provided a method of processing audio data, the method comprising:
caching audio data collected by a mobile terminal to obtain audio data to be processed;
scanning a bandwidth corresponding to the audio data to be processed;
acquiring a recording sampling rate corresponding to the bandwidth corresponding to the audio data to be processed;
and storing the audio data to be processed according to the recording sampling rate.
According to a second aspect of the present invention, there is provided a mobile terminal comprising:
the buffer module is used for buffering the audio data collected by the mobile terminal to obtain the audio data to be processed;
the scanning module is used for scanning the bandwidth corresponding to the audio data to be processed;
the acquisition module is used for acquiring a recording sampling rate corresponding to the bandwidth corresponding to the audio data to be processed;
and the storage module is used for storing the audio data to be processed according to the recording sampling rate.
According to the audio data processing method and the mobile terminal provided by the embodiment of the invention, the audio data acquired by the mobile terminal is cached to obtain the audio data to be processed, the bandwidth corresponding to the audio data to be processed is scanned to obtain the recording sampling rate corresponding to the bandwidth corresponding to the audio data to be processed, and finally the audio data to be processed is stored according to the recording sampling rate. Under the condition that the quality of the audio data is not influenced, the actually required recording sampling rate of the audio data to be processed can be determined according to the bandwidth corresponding to the audio data to be processed, so that the audio data to be processed can be stored according to the determined recording sampling rate, the audio data to be processed can be stored according to the actually corresponding recording sampling rate, the condition that the audio data with smaller bandwidth is stored by adopting a higher sampling rate is avoided, and the problems that more storage space is occupied and the storage space is wasted are solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a flow chart illustrating the steps of a method for processing audio data according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating steps of a method for processing audio data according to an embodiment of the present invention;
fig. 3 is a magnitude-frequency image corresponding to audio data to be processed according to an embodiment of the present invention;
FIG. 4 is a flow chart illustrating steps of a method for processing audio data according to an embodiment of the present invention;
fig. 5 is an interface diagram for recording audio data according to an embodiment of the present invention;
fig. 6 is a block diagram of a mobile terminal according to an embodiment of the present invention;
fig. 7 is a block diagram of a mobile terminal according to an embodiment of the present invention;
fig. 8 is a block diagram of a mobile terminal according to an embodiment of the present invention;
fig. 9 is a block diagram of a mobile terminal according to an embodiment of the present invention;
fig. 10 is a block diagram of a mobile terminal according to an embodiment of the present invention;
fig. 11 is a block diagram of a mobile terminal according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a mobile terminal according to an 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 some, not all, embodiments of the present invention. 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.
The method for processing the audio data provided by the embodiment of the invention is applied to the mobile terminal, and the mobile terminal can be a smart phone, a computer, a multimedia player, an electronic reader, a wearable device and the like. The mobile terminal can support a three-dimensional Touch technology (Force-Touch), the Force Touch technology is a process of realizing the change of electrical data by sensing the generation and the change of pressure, generating an instruction by the electrical data, and finally achieving the pressure to indirectly realize the instruction, and the mobile terminal can sense the Force of light pressure and heavy pressure of a user on a Touch screen and call different corresponding functions by the Force Touch technology.
The following describes a method for processing audio data and a mobile terminal according to the present invention in detail by listing several specific embodiments.
Example one
Referring to fig. 1, a flowchart illustrating steps of a method for processing audio data according to an embodiment of the present invention is shown, which may specifically include the following steps:
The audio data may be collected by the mobile terminal, and the audio data may be voice generated when the mobile terminal is in a call, or may be audio in an environment where the mobile terminal is located.
After the mobile terminal starts to collect the audio data, the collected audio data needs to be processed, so that the collected audio data can be cached in a preset storage space, and the audio data to be processed can be obtained.
Moreover, in order to facilitate processing of the collected audio data, the mobile terminal may further divide the storage space into a plurality of stacks. Correspondingly, when the collected audio data is cached in the storage space, the collected audio data can be cached in at least one stack, and the collected audio data is cached in at least one stack, so that the audio data to be processed is obtained, and different processing modes can be adopted for the collected audio data according to the audio data stored in different stacks in the subsequent step. Wherein the size of the storage space of each stack is consistent.
It should be noted that, in practical applications, the mobile terminal may obtain a plurality of audio data to be processed by caching, but for convenience of explanation, the embodiment of the present invention is explained by using only one audio data to be processed, and the number of the audio data to be processed is not limited.
Optionally, the mobile terminal may cache the acquired audio data in a stack, and when the stack cannot continue to cache the audio data, the stack may continue to cache the acquired audio data in a next stack, and the foregoing manner is executed in a loop until the audio data is cached completely.
Of course, other ways may also be adopted to cache the collected audio data, which is not limited in the embodiment of the present invention.
After the mobile terminal caches the audio data to be processed, the mobile terminal can scan the audio data to be processed and judge whether the audio data to be processed belongs to noise. If the audio data to be processed does not belong to the noise, the bandwidth corresponding to the audio data to be processed needs to be scanned and acquired, so that in the subsequent steps, the mobile terminal can calculate the recording sampling rate of the audio data to be processed according to the determined bandwidth, and then the recording sampling rate of the audio data to be processed is stored according to the recording sampling rate of the audio data to be processed, and the purpose of saving the storage space is achieved. The recording sampling rate is a sampling rate according to which the audio data to be processed is sampled.
However, if it is determined that the audio data to be processed belongs to noise, the bandwidth of the audio data to be processed may not be scanned and acquired, and accordingly, in the subsequent steps, the recording sampling rate corresponding to the audio data to be processed does not need to be acquired, and only the sampling storage is performed according to the default lowest sampling rate, so that the storage space is saved.
And 103, acquiring a recording sampling rate corresponding to the bandwidth corresponding to the audio data to be processed.
After the mobile terminal scans and obtains the bandwidth corresponding to the audio data to be processed, analysis and calculation can be performed according to the obtained bandwidth to obtain the recording sampling rate corresponding to the audio data to be processed, so that the mobile terminal can store the corresponding audio data to be processed according to the recording sampling rate obtained through calculation in the subsequent steps.
Further, in the process of calculating the recording sampling rate corresponding to the audio data to be processed according to the bandwidth, the calculated recording sampling rate may be used as the lowest recording sampling rate of the audio data to be processed, and a higher recording sampling rate may also be obtained as the recording sampling rate of the audio data to be processed. However, in order to save the storage space of the mobile terminal, the lowest recording sampling rate obtained by calculation may be generally used as the recording sampling rate of the audio data to be processed.
It should be noted that the process of determining the recording sampling rate is only a process for one piece of audio data to be processed, and since the mobile terminal may include at least one piece of audio data to be processed, the recording sampling rate corresponding to the audio data to be processed may be determined for each piece of audio data to be processed in the above manner.
And 104, storing the audio data to be processed according to the recording sampling rate.
After the mobile terminal determines the recording sampling rate corresponding to the audio data to be processed, the mobile terminal may determine the storage sampling rate required for storing the audio data to be processed according to the determined recording sampling rate. And the mobile terminal can also perform sampling processing on the cached audio data to be processed according to the determined recording sampling rate to obtain the processed audio data. And finally, the mobile terminal can store the processed audio data according to the determined storage sampling rate, so that the storage of the audio data is completed.
The storage sampling rate is a sampling rate according to which the audio data to be processed is stored, and the storage sampling rate is not less than the recording sampling rate.
To sum up, in the method for processing audio data provided by the embodiment of the present invention, the audio data acquired by the mobile terminal is cached to obtain the audio data to be processed, the bandwidth corresponding to the audio data to be processed is scanned to obtain the recording sampling rate corresponding to the bandwidth corresponding to the audio data to be processed, and finally, the audio data to be processed is stored according to the recording sampling rate. Under the condition that the quality of the audio data is not influenced, the actually required recording sampling rate of the audio data to be processed can be determined according to the bandwidth corresponding to the audio data to be processed, so that the audio data to be processed can be stored according to the determined recording sampling rate, the audio data to be processed can be stored according to the actually corresponding recording sampling rate, the condition that the audio data with smaller bandwidth is stored by adopting a higher sampling rate is avoided, and the problems that more storage space is occupied and the storage space is wasted are solved.
Example two
Referring to fig. 2, a flowchart illustrating steps of a method for processing audio data according to an embodiment of the present invention is shown, which may specifically include the following steps:
Step 201 is similar to step 101 and will not be described herein again.
After the mobile terminal caches the audio data to be processed, the mobile terminal may analyze and scan the audio data to be processed, and determine a bandwidth corresponding to the audio data to be processed, so that in the subsequent steps, a recording sampling rate corresponding to the audio data to be processed may be determined.
In the process that the mobile terminal determines the bandwidth corresponding to the audio data to be processed, the fourier transform can be performed on the audio data to be processed to obtain the amplitude-frequency image of the audio data to be processed, the amplitude-frequency image of the audio data to be processed is scanned, and the bandwidth corresponding to the audio data to be processed is determined.
The mobile terminal can scan the amplitude-frequency image of the audio data to be processed, determine the frequency response amplitude of the audio data to be processed, and determine the bandwidth of the audio data to be processed according to the frequency response amplitude of the audio data to be processed and a preset amplitude threshold.
Optionally, after the mobile terminal performs fourier transform on the audio data to be processed, an amplitude-frequency curve corresponding to the audio data to be processed as shown in fig. 3 may be obtained, where an abscissa of the amplitude-frequency curve is a frequency of the audio data to be processed, and a ordinate of the amplitude-frequency curve is a frequency response amplitude of the audio data to be processed.
Referring to fig. 3, a frequency corresponding to a point where the frequency response amplitude is the same as the preset amplitude threshold may be selected as the bandwidth corresponding to the audio data to be processed in the amplitude-frequency curve. In addition, a frequency threshold value can be set, and corresponding frequency is selected from the amplitude-frequency curve which is larger than the frequency threshold value to serve as the bandwidth. For example, the frequency b corresponding to the point a with the frequency greater than h KHz (kilohertz) and the frequency response amplitude being the preset threshold d may be used as the bandwidth corresponding to the audio data to be processed. The value of h may be 1, or may also be other values, which is not limited in the embodiment of the present invention.
In addition, if the point that the frequency is greater than h KHz and the frequency response amplitude is d is not included in the amplitude-frequency curve of the audio data to be processed, the bandwidth corresponding to the audio data to be processed is relatively narrow, the audio data to be processed can be considered as noise, the bandwidth of the audio data to be processed does not need to be determined, and the audio data to be processed can be stored at the lowest storage sampling rate in the subsequent steps.
Of course, the frequency h and the amplitude d may be set according to different environments of the collected audio data, which is not limited in the embodiment of the present invention.
After determining the bandwidth corresponding to the audio data to be processed, the mobile terminal may calculate the recording sampling rate of the audio data to be processed according to a bandwidth-sampling rate conversion formula. The bandwidth-to-sampling rate conversion formula may be:
L＝(2+n)*B
wherein, L is the recording sampling rate, n is a nonnegative integer, and B is the bandwidth corresponding to the audio data to be processed.
For example, the bandwidth corresponding to the audio data to be processed is 6KHz, and if n is 0 according to the bandwidth-sampling rate conversion formula, it may be determined that the recording sampling rate of the audio data to be processed is 12 KHz.
In addition, if there is no bandwidth corresponding to the audio data to be processed, it is indicated that the audio data to be processed belongs to noise, and accordingly, it is not necessary to determine the recording sampling rate of the audio data to be processed, and the recording sampling rate of the audio data to be processed may be set to a default value or other values, for example, the recording sampling rate may be set to a lowest sampling rate of the mobile terminal or other sampling rates, which is not limited in the embodiment of the present invention.
And step 204, storing the audio data to be processed according to the recording sampling rate.
The mobile terminal can determine the storage sampling rate corresponding to the audio data to be processed according to the recording sampling rate. Further, since the storage sampling rate corresponding to the audio data to be processed is not less than the recording sampling rate corresponding to the audio data to be processed, in order to save the storage space, the parameter value corresponding to the recording sampling rate may be determined as the parameter value corresponding to the storage sampling rate, so as to determine the storage sampling rate corresponding to the audio data to be processed, so that the mobile terminal may store the corresponding audio data to be processed according to the storage sampling rate corresponding to each audio data to be processed.
Correspondingly, the mobile terminal can also perform sampling processing on the audio data to be processed according to the recording sampling rate corresponding to the audio data to be processed, and then perform filtering, gain and other processing on the sampled audio data to obtain the processed audio data.
Therefore, the mobile terminal can store the processed audio data according to the storage sampling rate corresponding to the audio data to be processed. That is, after determining the storage sampling rate corresponding to the audio data to be processed, the mobile terminal may sample the audio data to be processed by using the storage sampling rate, so as to store the audio data to be processed.
It should be noted that, in the process of determining the storage sampling rate of the audio data to be processed, a case that the recording sampling rate is the lowest sampling rate of the mobile terminal may be encountered, and if the recording sampling rate of the audio data to be processed is the lowest sampling rate of the mobile terminal, it is indicated that the audio data to be processed may be noise, so that the audio data to be processed may be stored by using the lowest storage sampling rate, and thus may be stored according to the lowest storage sampling rate.
In addition, after the mobile terminal stores the audio data, the user can be prompted to name the stored audio data, and the audio data is named according to the input operation of the user, so that the storage of the audio data is completed. However, if the user cancels the naming operation for the audio data, the audio data may be named according to a default naming mode, for example, the date and time of the day corresponding to the mobile terminal is used for naming, or other modes may be used for naming, which is not limited in the embodiment of the present invention.
In summary, according to the audio data processing method provided in the embodiments of the present invention, the audio data collected by the mobile terminal is cached to obtain the audio data to be processed, the audio data to be processed is subjected to fourier transform, and the bandwidth corresponding to the audio data to be processed is determined, so as to determine the recording sampling rate corresponding to the data to be processed, and finally, the audio data to be processed is stored according to the recording sampling rate corresponding to the audio data to be processed, so as to complete the storage of the audio data. Under the condition that the quality of the audio data is not influenced, the actually required recording sampling rate of the audio data to be processed can be determined according to the bandwidth corresponding to the audio data to be processed, so that the audio data to be processed can be stored according to the determined recording sampling rate, the audio data to be processed can be stored according to the actually corresponding recording sampling rate, the condition that the audio data with smaller bandwidth is stored by adopting a higher sampling rate is avoided, and the problems that more storage space is occupied and the storage space is wasted are solved.
EXAMPLE III
Referring to fig. 4, a flowchart illustrating steps of a method for processing audio data according to an embodiment of the present invention is shown, which may specifically include the following steps:
Before the audio data is cached to obtain the audio data to be processed, the mobile terminal needs to cache the audio data, and after the fact that the user triggers the selection operation of the audio recording option is detected, the audio data can be collected according to the selection operation triggered by the user, so that the collected audio data can be processed in the subsequent steps, and the audio data processing is completed. Wherein the audio recording option is used for indicating to acquire audio data.
Optionally, the mobile terminal may detect whether the user triggers a selection operation on the audio recording option, so as to collect audio data that the user needs to record in time according to the selection operation triggered by the user on the audio recording option. When the mobile terminal detects that the user triggers the selection operation of the audio recording option, the mobile terminal can acquire audio data according to the selection operation triggered by the user.
Further, the mobile terminal may provide an interface for recording audio data to the user, as shown in fig. 5, the interface may include an audio recording option 501, an avatar 502 corresponding to the user a, and an avatar 503 corresponding to the user B, and after the mobile terminal detects a selection operation of the user on the audio recording option 501, the mobile terminal may collect the audio data in the current environment in real time according to the selection operation.
It should be noted that the selection operation of the recording option 501 by the user may be a click operation, a drag operation, a press operation, or the like, which is not limited in the embodiment of the present invention.
And 402, caching the audio data collected by the mobile terminal to obtain the audio data to be processed.
The process from step 402 to step 405 is similar to that from step 101 to step 104, and is not described herein again.
To sum up, in the method for processing audio data according to the embodiments of the present invention, after a selection operation triggered by a user is detected, audio data is collected according to the selection operation triggered by the user, the audio data collected by a mobile terminal is cached to obtain audio data to be processed, a bandwidth corresponding to the audio data to be processed is scanned to obtain a recording sampling rate corresponding to the bandwidth corresponding to the audio data to be processed, and finally, the audio data to be processed is stored according to the recording sampling rate. By detecting the selection operation triggered by the user, the audio data in the current environment can be acquired in time according to the selection operation triggered by the user, and the flexibility of acquiring the audio data is improved.
Example four
Referring to fig. 6, a block diagram of a mobile terminal according to an embodiment of the present invention is shown, which may specifically include:
the buffer module 610 is configured to buffer audio data acquired by the mobile terminal to obtain audio data to be processed;
a scanning module 620, configured to scan a bandwidth corresponding to the audio data to be processed;
an obtaining module 630, configured to obtain a recording sampling rate corresponding to a bandwidth corresponding to the audio data to be processed;
the storage module 640 is configured to store the audio data to be processed according to the recording sampling rate.
On the basis of fig. 6, optionally, referring to fig. 7, the scanning module 620 may include:
the transformation submodule 6201 is used for performing fourier transformation on the audio data to be processed to obtain an amplitude-frequency image of the audio data to be processed;
the scanning submodule 6202 is configured to scan the amplitude-frequency image of the audio data to be processed, and determine a bandwidth corresponding to the audio data to be processed.
On the basis of fig. 7, optionally, referring to fig. 8, the scanning sub-module 6202 may include:
an amplitude determining unit 6202a, configured to scan an amplitude-frequency image of the audio data to be processed, and determine a frequency response amplitude of the audio data to be processed.
A bandwidth determining unit 6202b, configured to determine a bandwidth of the audio data to be processed according to the frequency response amplitude of the audio data to be processed and a preset amplitude threshold.
On the basis of fig. 6, optionally, referring to fig. 9, the storage module 640 may include:
and the storage sampling rate determining submodule 6401 is configured to determine, according to the recording sampling rate, a storage sampling rate corresponding to the audio data to be processed, where the storage sampling rate is a sampling rate according to which the audio data to be processed is stored, and the storage sampling rate is not less than the recording sampling rate.
And the storage submodule 6402 is used for storing the audio data to be processed according to the storage sampling rate.
On the basis of fig. 6, optionally, referring to fig. 10, the mobile terminal may further include:
the detecting module 650 is configured to detect whether a user triggers a selection operation of an audio recording option, where the audio recording option is used to instruct to acquire audio data.
The collecting module 660 collects audio data according to the selection operation triggered by the user when detecting that the user triggers the selection operation of the audio recording option.
The mobile terminal 600 can implement each process implemented by the mobile terminal in the method embodiments of fig. 1, fig. 2, and fig. 4, and is not described herein again to avoid repetition.
To sum up, according to the mobile terminal provided by the embodiment of the present invention, audio data collected by the mobile terminal is cached to obtain audio data to be processed, a bandwidth corresponding to the audio data to be processed is scanned to obtain a recording sampling rate corresponding to the bandwidth corresponding to the audio data to be processed, and finally, the audio data to be processed is stored according to the recording sampling rate. Under the condition that the quality of the audio data is not influenced, the actually required recording sampling rate of the audio data to be processed can be determined according to the bandwidth corresponding to the audio data to be processed, so that the audio data to be processed can be stored according to the determined recording sampling rate, the audio data to be processed can be stored according to the actually corresponding recording sampling rate, the condition that the audio data with smaller bandwidth is stored by adopting a higher sampling rate is avoided, and the problems that more storage space is occupied and the storage space is wasted are solved.
EXAMPLE five
Fig. 11 is a block diagram of a mobile terminal according to another embodiment of the present invention. The mobile terminal 1100 shown in fig. 11 includes: at least one processor 1101, memory 1102, at least one network interface 1104, and other user interfaces 1103. Various components in mobile terminal 1100 are coupled together by a bus system 1105. It is understood that the bus system 1105 is used to enable communications among the components. The bus system 1105 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 11 as the bus system 1105.
The user interface 1103 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.
It is to be understood that the memory 1102 in embodiments of the present invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a Read-only memory (ROM), a programmable Read-only memory (PROM), an erasable programmable Read-only memory (erasabprom, EPROM), an electrically erasable programmable Read-only memory (EEPROM), or a flash memory. The volatile memory may be a Random Access Memory (RAM) which functions as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (staticiram, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (syncronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced synchronous SDRAM (ESDRAM), synchronous link SDRAM (SLDRAM), and direct memory bus SDRAM (DRRAM). The memory 1102 of the subject systems and methods is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 1102 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 11021 and application programs 11022.
The operating system 11021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 11022 contains various applications such as a media player (MediaPlayer), a Browser (Browser), and the like for implementing various application services. Programs that implement methods in accordance with embodiments of the invention may be included in application 11022.
In the embodiment of the present invention, by calling a program or an instruction stored in the memory 1102, specifically, a program or an instruction stored in the application program 11022, the memory 1102 is configured to cache audio data acquired by the mobile terminal, so as to obtain audio data to be processed; the processor 1101 is configured to scan a bandwidth corresponding to audio data to be processed, and obtain a recording sampling rate corresponding to the bandwidth corresponding to the audio data to be processed; the memory 1102 is further configured to store the audio data to be processed according to the recording sampling rate.
The methods disclosed in the embodiments of the present invention described above may be implemented in the processor 1101 or by the processor 1101. The processor 1101 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 1101. The processor 1101 may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1102, and the processor 1101 reads the information in the memory 1102 and completes the steps of the above method in combination with the hardware thereof.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
Optionally, the processor 1101 is configured to perform fourier transform on the audio data to be processed, so as to obtain a magnitude-frequency image of the audio data to be processed; and scanning the amplitude-frequency image of the audio data to be processed, and determining the bandwidth corresponding to the audio data to be processed.
Optionally, the processor 1101 is further configured to scan a magnitude-frequency image of the audio data to be processed, and determine a frequency response magnitude of the audio data to be processed; and determining the bandwidth of the audio data to be processed according to the frequency response amplitude of the audio data to be processed and a preset amplitude threshold value.
Optionally, the processor 1101 is further configured to determine a storage sampling rate corresponding to the audio data to be processed according to the recording sampling rate, where the storage sampling rate is a sampling rate according to which the audio data to be processed is stored, and the storage sampling rate is not less than the recording sampling rate; and storing the audio data to be processed according to the storage sampling rate.
Optionally, before the audio data is cached to obtain at least one audio data to be processed, the user interface 1103 is configured to detect whether a user triggers a selection operation on an audio recording option, where the audio recording option is used to indicate to acquire the audio data;
the processor 1101 is further configured to, when it is detected that the user triggers a selection operation on the audio recording option, acquire audio data according to the selection operation triggered by the user.
The mobile terminal 1100 is capable of implementing each process implemented by the mobile terminal in the foregoing embodiments, and details are not repeated here to avoid repetition.
To sum up, according to the mobile terminal provided by the embodiment of the present invention, audio data collected by the mobile terminal is cached to obtain audio data to be processed, a bandwidth corresponding to the audio data to be processed is scanned to obtain a recording sampling rate corresponding to the bandwidth corresponding to the audio data to be processed, and finally, the audio data to be processed is stored according to the recording sampling rate. Under the condition that the quality of the audio data is not influenced, the actually required recording sampling rate of the audio data to be processed can be determined according to the bandwidth corresponding to the audio data to be processed, so that the audio data to be processed can be stored according to the determined recording sampling rate, the audio data to be processed can be stored according to the actually corresponding recording sampling rate, the condition that the audio data with smaller bandwidth is stored by adopting a higher sampling rate is avoided, and the problems that more storage space is occupied and the storage space is wasted are solved.
EXAMPLE six
Fig. 12 is a schematic structural diagram of a mobile terminal according to another embodiment of the present invention. Specifically, the mobile terminal 1200 in fig. 12 may be a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), or a vehicle-mounted computer.
The mobile terminal 1200 in fig. 12 includes a Radio Frequency (RF) circuit 1210, a memory 1220, an input unit 1230, a display unit 1240, a processor 1260, an audio circuit 1270, a wifi (wirelessfidelity) module 1280, and a power supply 1290.
The input unit 1230 may be used, among other things, to receive numeric or character information input by a user and to generate signal inputs related to user settings and function control of the mobile terminal 1200. Specifically, in the embodiment of the present invention, the input unit 1230 may include a touch panel 1231. The touch panel 1231, also referred to as a touch screen, can collect touch operations of a user (e.g., operations of the user on the touch panel 1231 by using a finger, a stylus pen, or any other suitable object or accessory) thereon or nearby, and drive the corresponding connection device according to a preset program. Alternatively, the touch panel 1231 may include two portions, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device and converts it to touch point coordinates, which are provided to the processor 1260 and can receive commands from the processor 1260 for execution. In addition, the touch panel 1231 may be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1231, the input unit 1230 may also include other input devices 1232, and the other input devices 1232 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.
Among other things, the display unit 1240 may be used to display information input by or provided to the user and various menu interfaces of the mobile terminal 1200. The display unit 1240 may include a display panel 1241, and optionally, the display panel 1241 may be configured in the form of an LCD or an organic light-emitting diode (OLED), or the like.
It should be noted that touch panel 1231 can overlie display panel 1241 to form a touch display screen, and when the touch display screen detects a touch operation thereon or thereabout, the touch display screen can communicate to processor 1260 to determine the type of touch event, and processor 1260 can then provide a corresponding visual output on the touch display screen based on the type of touch event.
The touch display screen comprises an application program interface display area and a common control display area. The arrangement modes of the application program interface display area and the common control display area are not limited, and can be an arrangement mode which can distinguish two display areas, such as vertical arrangement, left-right arrangement and the like. The application interface display area may be used to display an interface of an application. Each interface may contain at least one interface element such as an icon and/or widget desktop control for an application. The application interface display area may also be an empty interface that does not contain any content. The common control display area is used for displaying controls with high utilization rate, such as application icons like setting buttons, interface numbers, scroll bars, phone book icons and the like.
The processor 1260 is a control center of the mobile terminal 1200, connects various parts of the entire handset using various interfaces and lines, and performs various functions of the mobile terminal 1200 and processes data by operating or executing software programs and/or modules stored in the first memory 1221 and calling data stored in the second memory 1222, thereby integrally monitoring the mobile terminal 1200. Optionally, processor 1260 may include one or more processing units.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The embodiments in the present specification 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 algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. Moreover, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It will be appreciated by those skilled in the art that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components of a fingerprint recognition device according to an embodiment of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method of processing audio data, the method comprising:
caching audio data collected by a mobile terminal to obtain audio data to be processed;
scanning a bandwidth corresponding to the audio data to be processed;
acquiring a recording sampling rate corresponding to the bandwidth corresponding to the audio data to be processed;
storing the audio data to be processed according to the recording sampling rate;
wherein the scanning the bandwidth corresponding to the audio data to be processed includes:
if the audio data to be processed does not belong to noise, scanning to obtain a broadband corresponding to the audio data to be processed;
the storing the audio data to be processed according to the recording sampling rate comprises:
if the audio data to be processed belongs to noise, storing the audio data to be processed according to a default lowest sampling rate;
wherein, obtaining a recording sampling rate corresponding to a bandwidth corresponding to the audio data to be processed comprises: and calculating to obtain the lowest recording sampling rate corresponding to the audio data to be processed according to the bandwidth, and taking the calculated lowest recording sampling rate as the recording sampling rate corresponding to the bandwidth corresponding to the audio data to be processed.
2. The method of claim 1, wherein the scanning a bandwidth corresponding to the audio data to be processed comprises:
performing Fourier transform on the audio data to be processed to obtain an amplitude-frequency image of the audio data to be processed;
and scanning the amplitude-frequency image of the audio data to be processed, and determining the bandwidth corresponding to the audio data to be processed.
3. The method according to claim 2, wherein the scanning the amplitude-frequency image of the audio data to be processed to determine the bandwidth corresponding to the audio data to be processed comprises:
scanning the amplitude-frequency image of the audio data to be processed, and determining the frequency response amplitude of the audio data to be processed;
and determining the bandwidth of the audio data to be processed according to the frequency response amplitude of the audio data to be processed and a preset amplitude threshold value.
4. The method of claim 1, wherein storing the audio data to be processed according to the recording sample rate comprises:
determining a storage sampling rate corresponding to the audio data to be processed according to the recording sampling rate, wherein the storage sampling rate is a sampling rate according to which the audio data to be processed is stored, and the storage sampling rate is not less than the recording sampling rate;
and storing the audio data to be processed according to the storage sampling rate.
5. The method according to claim 1, wherein before the buffering the audio data collected by the mobile terminal to obtain the audio data to be processed, the method further comprises:
detecting whether a user triggers selection operation of an audio recording option, wherein the audio recording option is used for indicating acquisition of audio data;
and when detecting that the user triggers the selection operation of the audio recording option, acquiring audio data according to the selection operation triggered by the user.
6. A mobile terminal, characterized in that the mobile terminal comprises:
the buffer module is used for buffering the audio data collected by the mobile terminal to obtain the audio data to be processed;
the scanning module is used for scanning the bandwidth corresponding to the audio data to be processed;
the acquisition module is used for acquiring a recording sampling rate corresponding to the bandwidth corresponding to the audio data to be processed;
the storage module is used for storing the audio data to be processed according to the recording sampling rate; the scanning module is specifically configured to scan and acquire a wideband corresponding to the audio data to be processed if the audio data to be processed does not belong to noise;
the storage module is specifically configured to store the audio data to be processed according to a default lowest sampling rate if the audio data to be processed belongs to noise;
the acquisition module is used for calculating the lowest recording sampling rate corresponding to the audio data to be processed according to the bandwidth, and taking the calculated lowest recording sampling rate as the recording sampling rate corresponding to the bandwidth corresponding to the audio data to be processed.
7. The mobile terminal of claim 6, wherein the scanning module comprises:
the transformation submodule is used for carrying out Fourier transformation on the audio data to be processed to obtain an amplitude-frequency image of the audio data to be processed;
and the scanning submodule is used for scanning the amplitude-frequency image of the audio data to be processed and determining the bandwidth corresponding to the audio data to be processed.
8. The mobile terminal of claim 7, wherein the scanning sub-module comprises:
the amplitude determining unit is used for scanning the amplitude-frequency image of the audio data to be processed and determining the frequency response amplitude of the audio data to be processed;
and the bandwidth determining unit is used for determining the bandwidth of the audio data to be processed according to the frequency response amplitude of the audio data to be processed and a preset amplitude threshold value.
9. The mobile terminal of claim 6, wherein the storage module comprises:
the storage sampling rate determining submodule is used for determining a storage sampling rate corresponding to the audio data to be processed according to the recording sampling rate, the storage sampling rate is a sampling rate according to which the audio data to be processed is stored, and the storage sampling rate is not less than the recording sampling rate;
and the storage submodule is used for storing the audio data to be processed according to the storage sampling rate.
10. The mobile terminal of claim 6, wherein the mobile terminal further comprises:
the detection module is used for detecting whether a user triggers the selection operation of an audio recording option, wherein the audio recording option is used for indicating the acquisition of audio data;
and the acquisition module acquires audio data according to the selection operation triggered by the user when detecting that the user triggers the selection operation of the audio recording option.
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| JP4250578B2 (en) * | 2004-09-07 | 2009-04-08 | 株式会社リコー | Voice audio equipment |
| DK2211339T3 (en) * | 2009-01-23 | 2017-08-28 | Oticon As | listening System |
| US9112989B2 (en) * | 2010-04-08 | 2015-08-18 | Qualcomm Incorporated | System and method of smart audio logging for mobile devices |
| JP5567220B2 (en) * | 2010-10-13 | 2014-08-06 | ヴェーデクス・アクティーセルスカプ | Hearing aid system and method for fitting a hearing aid system |
| CN102710604B (en) * | 2012-05-07 | 2015-04-01 | 苏州阔地网络科技有限公司 | Method and system for extracting sound |
| CN103778950A (en) * | 2012-10-22 | 2014-05-07 | 爱国者电子科技有限公司 | Recording method in the state of closed recording circuit |
| CN102946520B (en) * | 2012-10-30 | 2016-12-21 | 深圳创维数字技术有限公司 | A kind of method automatically controlling frequency channel volume and digital TV terminal |
| CN103354588A (en) * | 2013-06-28 | 2013-10-16 | 贵阳朗玛信息技术股份有限公司 | Determination method, apparatus and system for recording and playing sampling rate |
| CN103731274B (en) * | 2014-01-20 | 2016-09-28 | 飞天诚信科技股份有限公司 | A kind of method identifying audio frequency apparatus |
| GB2535766B (en) * | 2015-02-27 | 2019-06-12 | Imagination Tech Ltd | Low power detection of an activation phrase |
| CN105632541B (en) * | 2015-12-23 | 2019-01-29 | 惠州Tcl移动通信有限公司 | A kind of method, system and the mobile phone of recording mobile phone output audio |
| CN106782608B (en) * | 2016-12-10 | 2019-11-05 | 广州酷狗计算机科技有限公司 | Noise detecting method and device |
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