WO2012016497A1

WO2012016497A1 - Method and device for playing audio signal

Info

Publication number: WO2012016497A1
Application number: PCT/CN2011/077712
Authority: WO
Inventors: 李洪玺
Original assignee: 华为终端有限公司
Priority date: 2010-08-05
Filing date: 2011-07-28
Publication date: 2012-02-09
Also published as: CN101931479B; CN101931479A

Abstract

Embodiments of the present invention provide a method and a device for playing an audio signal. The method comprises: playing a first audio signal converted according to a radio broadcast signal; when a received signal strength indicator (RSSI) is smaller than a preset first threshold value, obtaining address information corresponding to frequency band information of the radio broadcast signal; and playing a second audio signal converted according to a media stream, wherein the media stream is obtained according to the address information. In the present invention, when a mobile terminal plays the first audio signal converted according to the obtained radio broadcast signal, if the RSSI is smaller than the preset first threshold value, the address information corresponding to the frequency band information of the radio broadcast signal is obtained, so that the mobile terminal can play the second audio signal converted according to the obtained media stream corresponding to the address information, thereby enlarging the range in which the mobile terminal can play an audio signal corresponding to a broadcasted program, and ensuring normal operation of broadcasting services of the mobile terminal.

Description

The present invention claims the priority of the Chinese Patent Application entitled "Audio Signal Play Method and Apparatus", which is filed on August 5, 2010, in the Chinese Patent Office, Application No. 201010248942. The entire contents are incorporated herein by reference. TECHNICAL FIELD Embodiments of the present invention relate to communication technologies, and in particular, to a method and an apparatus for playing an audio signal. Background Art As mobile terminals continue to evolve, integrated broadcast functions are made possible. The mobile terminal acquires a wireless broadcast signal through the integrated FM chip, and plays an audio signal converted according to the above wireless broadcast signal.

Since the number of radio broadcast base stations is relatively small, the range of radio broadcast signals transmitted by them can only cover cities and some towns and towns, and cannot cover the field and high highways. In the enclosed space below the ground level, wireless broadcast signals cannot be reached. Therefore, the range in which the mobile terminal can play the audio signal corresponding to the broadcast program is limited, which affects the normal progress of the broadcast service of the mobile terminal. Summary of the invention

The embodiment of the invention provides a method and a device for playing an audio signal, which are used to expand the range of the audio signal corresponding to the broadcast program of the mobile terminal, and ensure the normal operation of the broadcast service of the mobile terminal.

An embodiment of the present invention provides a method for playing an audio signal, including:

Playing a first audio signal converted according to the wireless broadcast signal; acquiring, when the received signal field strength indication RSSI is less than a preset first threshold, address information corresponding to the frequency band information of the wireless broadcast signal; playing the first according to the media stream conversion a second audio signal, the media stream being acquired according to the address information. The embodiment of the invention further provides an audio signal playing device, including:

a first playing module, configured to play a first audio signal converted according to the wireless broadcast signal; and an address obtaining module, configured to acquire a frequency band of the wireless broadcast signal when the received signal field strength indication RSSI is less than a preset first threshold The second broadcast module is configured to play a second audio signal converted according to the media stream, where the media stream is according to the Address information is obtained.

According to the foregoing technical solution, in the process of playing the first audio signal converted according to the wireless broadcast signal by the mobile terminal, when the RSSI is less than the preset first threshold, the method corresponding to the frequency band information of the wireless broadcast signal is obtained. The address information, so that the mobile terminal can play the second audio signal converted according to the acquired media stream corresponding to the address information, thereby expanding the audio signal (the first audio signal or the second audio signal) corresponding to the mobile terminal being able to play the broadcast program. The scope of the transmission guarantees the normal operation of the mobile terminal's broadcasting service. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. The drawings are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

1 is a schematic flowchart of a method for playing an audio signal according to Embodiment 1 of the present invention;

2 is a schematic flowchart of a method for playing an audio signal according to Embodiment 2 of the present invention;

3 is a schematic structural diagram of an apparatus for playing an audio signal according to Embodiment 3 of the present invention;

FIG. 4 is a schematic structural diagram of an apparatus for playing an audio signal according to Embodiment 4 of the present invention. The purpose of the present invention is to clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the technical solutions in the embodiments of the present invention are clearly and completely described. The described embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention. 1 is a schematic flowchart of a method for playing an audio signal according to Embodiment 1 of the present invention. As shown in FIG. 1, the method for playing an audio signal in this embodiment may include the following steps: Step 101: A mobile terminal plays a video according to a radio broadcast signal. The first audio signal is obtained. Step 102: The mobile terminal acquires address information corresponding to the frequency band information of the wireless broadcast signal when the Received Signal Strength Indicator (RSSI) is less than a preset first threshold. The address information is a network address, and the corresponding media stream can be obtained according to the network address. Step 103: The mobile terminal plays a second audio signal converted according to the media stream, where the media stream is acquired according to the address information. The first audio signal or the second audio signal may be an FM mobile audio signal, or may be an amplitude modulated (AM) audio signal. Further, the method for playing the audio signal of the embodiment may further include the step of setting a mapping relationship between the frequency band information and the address information in advance, so that the mobile terminal in the above step 102 can acquire the address information corresponding to the frequency band information of the wireless broadcast signal. The mapping relationship between the foregoing frequency band information and the address information may be as shown in Table 1. Table 1 Mapping relationship between frequency band information and address information Address information corresponding to frequency band information

FM91. 5Hz s \\fmradio. xxx. xxx\aaa. aaa

FM 87. 6 Hz s \\fmradio. xxx. xxx\bbb. bbb

FM 97. 4 Hz s \\fmradio. xxx. xxx\ccc. ccc

FM 103. 9Hz s \\fmradio. xxx. xxx\ddd. ddd

AM 531Hz s \\fmradio. xxx. xxx\ddd. eee

AM 1602Hz s \\fmradio. xxx. xxx\ddd. f f f

Further, in order to improve the continuity and real-time performance of the second audio signal played by the mobile terminal, the foregoing step 103 of the embodiment may further include pre-cached the obtained media stream corresponding to the address information, so that the mobile terminal can be used as a mobile terminal. When the RSSI is smaller than the preset second threshold, the second audio signal converted according to the buffered media stream is immediately played. Further, the mobile terminal may further resume playing the first audio signal converted according to the wireless broadcast signal when the RSSI is greater than a preset first threshold. In this embodiment, the mobile terminal may specifically learn the value of the RSSI register, RSSI, by polling the RSSI register. In this embodiment, when the mobile terminal plays the first audio signal converted according to the acquired wireless broadcast signal, when the RSSI is less than the preset first threshold, the address information corresponding to the frequency band information of the wireless broadcast signal is acquired, thereby Enabling the mobile terminal to play a second audio signal converted according to the acquired media stream corresponding to the address information, thereby expanding a range in which the mobile terminal can play an audio signal (a first audio signal or a second audio signal) corresponding to the broadcast program, The normal operation of the broadcast service of the mobile terminal is guaranteed.

2 is a schematic flowchart of a method for playing an audio signal according to Embodiment 2 of the present invention. As shown in FIG. 2, the method for playing an audio signal in this embodiment may include the following steps: Step 201: The mobile terminal plays the first audio signal converted according to the obtained wireless broadcast signal. In this step, the mobile terminal may convert the acquired wireless broadcast signal to generate a first audio signal, and then the first audio signal may be played. Specifically, the audio output path (ie, the speaker) of the mobile terminal is connected to the FM/AM chip, and the radio broadcast signal corresponding to the broadcast program is acquired and converted by the FM/AM chip. Step 202: The mobile terminal polls the RSSI register to learn the value of the RSSI register, and the value of the RSSI register is RSSI. The RSSI register can be set on the FM/AM chip. Step 203: When the RSSI is less than 30, the mobile terminal acquires address information corresponding to the frequency band information of the wireless broadcast signal according to the mapping relationship between the preset frequency band information and the address information. Step 204: The mobile terminal caches the obtained address information. Corresponding media stream; Step 205: The mobile terminal plays the second audio signal converted according to the buffered media stream when the RSSI is less than 10; in this step, the audio output channel (ie, the speaker) of the mobile terminal is switched to play with the streaming media. The module is connected, and the media stream corresponding to the broadcast program is acquired and converted by the streaming media playing module. Step 206: When the RSSI is greater than 30, the mobile terminal stops buffering the obtained media stream corresponding to the address information, and continues to play the first audio signal converted according to the acquired wireless broadcast signal. In this step, the audio output path (ie, the speaker) of the mobile terminal is switched back to the FM/AM chip, and the radio broadcast signal corresponding to the broadcast program is acquired and converted by the FM/AM chip. In this embodiment, if the user needs to stop the mobile terminal from converting the acquired wireless broadcast signal, that is, before shutting down, it is necessary to stop polling the RSSI register to avoid waste of resources. In this embodiment, when the mobile terminal plays the first audio signal converted according to the acquired wireless broadcast signal, when the RSSI is less than 30, the address information corresponding to the frequency band information of the wireless broadcast signal is acquired, thereby enabling the mobile terminal to Playing a second audio signal converted according to the acquired media stream corresponding to the address information, expanding a range in which the mobile terminal can play an audio signal (a first audio signal or a second audio signal) corresponding to the broadcast program, and ensuring that the mobile terminal broadcasts The business is going on normally.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. Second, the person skilled in the art also It should be understood that the embodiments described in the specification are all preferred embodiments and that the acts and modules involved are not necessarily essential to the invention.

In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

FIG. 3 is a schematic structural diagram of an apparatus for playing an audio signal according to Embodiment 3 of the present invention. As shown in FIG. 3, the apparatus for playing an audio signal in this embodiment may include a first play module 31, an address obtaining module 32, and a second play. Module 33. The first playing module 31 plays the first audio signal converted according to the wireless broadcast signal, and the address obtaining module 32 acquires the address information corresponding to the frequency band information of the wireless broadcast signal when the RSSI is less than the preset first threshold. The playing module 33 plays a second audio signal converted according to the media stream, and the media stream is acquired according to the address information. The functions of the mobile terminal in the first embodiment and the second embodiment of the present invention can be implemented by the audio signal playing device provided by the embodiment of the present invention.

In this embodiment, when the first playing module plays the first audio signal converted according to the acquired wireless broadcast signal, when the RSSI is less than the preset first threshold, the address obtaining module acquires the frequency band information corresponding to the wireless broadcast signal. The address information, so that the second playing module can play the second audio signal converted according to the acquired media stream corresponding to the address information, thereby expanding the audio signal (first audio signal or second) that the mobile terminal can play the broadcast program. The range of the audio signal) ensures the normal operation of the mobile terminal's broadcast service.

Further, the playback device of the audio signal of the embodiment may further include a setting module 34, configured to preset a mapping relationship between the frequency band information and the address information, so that the address obtaining module 32 acquires the frequency band information corresponding to the wireless broadcast signal. Address information. 4 is a schematic structural diagram of an apparatus for playing an audio signal according to Embodiment 4 of the present invention. As shown in FIG. 4, the second playback module 33 in the apparatus for playing audio signals of the present embodiment may specifically include a buffer unit 41 and a playback unit. 42. The buffer unit 41 caches the obtained media stream corresponding to the address information, and the playing unit 42 plays the second audio signal converted according to the buffered media stream when the RSSI is less than a preset second threshold. In this embodiment, after the address obtaining module obtains the address information corresponding to the frequency band information of the wireless broadcast signal, the buffer unit first caches the obtained media stream corresponding to the address information, when the RSSI is less than a preset second threshold. The playback unit then plays the second audio signal converted according to the buffered media stream, thereby improving the continuity of the played audio signal. Further, since the acquisition of the media stream generates a certain amount of network traffic, when the RSSI is greater than the preset The first playing module 31 may further continue to play the first audio signal converted according to the wireless broadcast signal.

Specifically, the playing device of the audio signal of this embodiment may further include an information polling module 35 for polling the RSSI register to learn the value of the RSSI register, and the value of the RSSI register is RSSI, so that when the RSSI satisfies different thresholds When the condition is met, the corresponding function module or unit is triggered. A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The steps of the foregoing method embodiments are included; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk. It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

A method for playing an audio signal, comprising: playing a first audio signal converted according to a wireless broadcast signal; and acquiring a wireless broadcast when the received signal field strength indicating that the RSSI is less than a preset first threshold The address information corresponding to the frequency band information of the signal; playing the second audio signal converted according to the media stream, where the media stream is acquired according to the address information.

2. The method according to claim 1, further comprising: pre-setting a mapping relationship between the frequency band information and the address information to obtain address information corresponding to the frequency band information of the wireless broadcast signal.

The method according to claim 1, wherein the playing the second audio signal converted according to the media stream, the obtaining, by the media stream according to the address information, specifically includes: acquiring the cached address information Corresponding media stream; when the RSSI is less than a preset second threshold, playing a second audio signal converted according to the buffered media stream.

The method according to claim 1, wherein the playing the second audio signal converted according to the media stream, after the media stream is acquired according to the address information, further comprising: when the RSSI is greater than the first At the threshold, the first audio signal is played.

The method according to claim 1, wherein the method further comprises: polling the RSSI register to obtain a value of the RSSI register, and the value of the RSSI register is an RSSI.

The method according to any one of claims 1 to 5, wherein the first threshold is 30 and the second threshold is 10.

A playback device for an audio signal, comprising: a first play module, configured to play a first audio signal converted according to a wireless broadcast signal; and an address acquisition module, configured to: when the received signal field strength indicates that the RSSI is less than a And the second broadcast module is configured to play a second audio signal that is converted according to the media stream, where the media stream is based on the address information, where the first threshold is set, the address information corresponding to the frequency band information of the wireless broadcast signal is obtained; Obtain.

The device according to claim 7, further comprising a setting module, configured to preset a mapping relationship between the frequency band information and the address information, so that the address obtaining module acquires frequency band information of the wireless broadcast signal Corresponding address information.

The device according to claim 7, wherein the second playing module comprises: a buffer unit, configured to cache the obtained media stream corresponding to the address information; and a playing unit, configured to: when the RSSI is smaller than When the second threshold is set in advance, the second audio signal converted according to the buffered media stream is played.

The device according to claim 7, wherein the first playing module is further configured to play the first audio signal when the RSSI is greater than the first threshold.

The device according to any one of claims 7 to 10, wherein the device further comprises an information polling module, configured to poll the RSSI register, learn the value of the RSSI register, and the value of the RSSI register. For RSSI.