CN109068171B - Method for limiting volume of specified audio stream in smart television - Google Patents
Method for limiting volume of specified audio stream in smart television Download PDFInfo
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- CN109068171B CN109068171B CN201811116631.4A CN201811116631A CN109068171B CN 109068171 B CN109068171 B CN 109068171B CN 201811116631 A CN201811116631 A CN 201811116631A CN 109068171 B CN109068171 B CN 109068171B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
Abstract
The invention discloses a method for limiting the volume of an appointed audio stream in an intelligent television, which comprises the following steps: firstly, the audio with the volume to be limited is appointed to be played in a specific audio stream, so that the separation of audio categories is realized; and secondly, according to different conditions, the volume of the audio stream is correspondingly controlled. The invention designs different flows aiming at the local loudspeaker of the television with the back end audio processor, the local loudspeaker of the television without the back end audio processor and the television connecting Bluetooth loudspeaker with (or without) the back end audio processor to control the volume of the special audio stream, thereby achieving the following volume limiting target: when the system master volume is below a threshold value, the special audio stream volume follows the system master volume; when the master volume of the system is above a threshold value, the volume of the special audio stream is kept at the threshold volume; the volume of a special audio stream is limited while the volume of other audio streams is not affected.
Description
Technical Field
The invention relates to a volume control method of a smart television system, in particular to a method for limiting the volume of a specified audio stream in a smart television.
Background
There are many applications in smart television systems that can produce various sounds; meanwhile, the system prompt tone of the intelligent television system, the playing of the TV and media and the like are also provided. Finally, various types of sound are mixed and output to local speakers or Bluetooth speakers and other devices.
In some scenarios, it is desirable to limit some types of sounds so that their volume remains fixed after a certain threshold is exceeded, and does not increase further, so as not to disturb the user. Such as a system touch tone, an alert tone, or a voice announcement, etc. In the existing intelligent television system, the method for limiting the designated audio volume and effectively working on the local loudspeaker of the television with (or without) a back-end audio processor and the Bluetooth loudspeaker connected with the television is not provided.
Under the condition, the patent provides a method for limiting the volume of the specified audio stream, and the method for limiting the volume of the specified audio stream is realized under the conditions that a local loudspeaker of a television with (or without) a rear-end audio processor, a Bluetooth loudspeaker is connected to the television and the like through a set of process and algorithm.
Disclosure of Invention
Before specifically describing the content of the present invention, first, audio, volume control, and the like in the smart tv system will be described.
There are many different audio STREAMs (STREAM) in a smart tv system, and sounds from different sources can be specified to be played in different audio STREAMs. For example, MUSIC is designated to be played in STREAM _ MUSIC, and a system alert tone is designated to be played in STREAM _ NOTIFICATION. Different volume values may also be set for each audio stream. Finally, the system calculates and mixes the volume values of the audio stream data and the audio stream, and sends the mixture to an audio output device, so that the sound is played.
In the smart television, there are several different volume control measures:
1. local loudspeaker of TV with back-end audio processor
In order to realize sound effect enhancement of some loudspeakers, the volume of the loudspeaker of the intelligent television is controlled by a rear-end audio processor, and the volume of each audio stream is fixed to be the maximum value;
2. after the local speaker of the television without the back-end audio processor and the television with (or without) the back-end audio processor are connected with the Bluetooth speaker, the volume is realized by directly adjusting the volume of each audio stream by the system, and the volume of each audio stream is set as an actual volume value.
Based on the above situation, in order to limit the volume of the designated sound, the invention adopts the following specific technical scheme:
the method for limiting the volume of the specified audio stream in the smart television comprises the following steps:
firstly, the audio with the volume to be limited is appointed to be played in a specific audio stream, so that the separation of audio categories is realized;
secondly, according to the different conditions, carry out corresponding control of appointed audio stream volume, specifically do:
case 1 local speaker of television with back-end audio processor
In this case, the television is overall volume controlled by the back-end audio processor. Since the audio streams of the system are fixed to the maximum volume in this case, in order to limit the volume of an audio stream individually, the volume of the audio stream is first set to a value set individually instead of being fixed.
At this time, since the audio stream itself is volume-adjusted, the back-end audio processor adjusts the output total volume again, and the volume is adjusted 2 times. That is, the actual volume of the restricted stream is the volume of the restricted stream (master volume/maximum volume).
Aiming at the condition that two-stage volume adjustment is available, the following process is designed to achieve the purpose:
and 1.1, when the master volume of the whole machine is less than or equal to the threshold, fixing the volume of the limited stream to be the maximum volume. The sound of the limited stream is mixed with other sounds and output, and the actual volume is the same as the main volume of the whole machine after the volume is adjusted by the back-end audio processor.
Flow 1.2 when the master volume of the whole machine is greater than the threshold, the volume of the limited flow is adjusted according to the following method
Volume of limited stream is threshold/(master volume/maximum volume)
When the sound of the restricted stream is mixed with other sounds and outputted and the volume is adjusted by the back-end audio processor, the actual volume is the same as the threshold. That is, the actual volume of the restricted stream is the volume of the restricted stream (master volume/max volume) threshold/(master volume/max volume) threshold.
Flow 1.3 the volume of the other audio streams is fixed at the maximum value regardless of the master volume.
Case 2 local speakers for a television without a back-end audio processor, and Bluetooth-connected speakers for a television with (or without) a back-end audio processor
In this case, the television directly performs volume control by adjusting the volume of each stream, so the following flow is designed to achieve the purpose:
and 2.1, before the master volume of the whole machine reaches the set threshold volume, setting the volume of the limited stream to be the same as the master volume of the whole machine.
And 2.2, after the master volume of the whole machine exceeds the threshold, setting the volume of the limited stream to be the same as the threshold volume.
Flow 2.3 sets the volume of other audio streams to be the same as the master volume regardless of the master volume.
The further scheme is as follows:
before the corresponding control of setting the volume of the audio stream, the method comprises the steps of judging in advance, and specifically comprises the following steps:
when the main volume is adjusted, the current state of the audio output equipment of the television is judged, and then an appropriate audio flow volume calculation mode is adopted:
if the television has a back-end audio processor and no Bluetooth speaker is connected (or no Bluetooth connection function is available). And controlling the main volume of the whole machine through a rear-end audio processor, setting the volume of the limited stream according to the process of the condition 1 by the system, and fixing the volume of other audio streams to be the maximum value.
If the television does not have a back-end audio processor and no bluetooth speaker is connected (or no bluetooth connection capability). The system sets the volume of the restricted stream according to the procedure described in case 2 and fixes the volume of the other audio streams to the maximum value.
When the television supports the Bluetooth connection function and the Bluetooth loudspeaker is connected, the system sets the volume of the limited stream according to the process of the condition 2, and sets the volume of other audio streams to be the same as the main volume of the whole machine.
The further scheme is as follows:
the specific audio STREAM refers to other audio STREAMs except STREAM _ MUSIC.
The further scheme is as follows:
the other audio STREAMs except for STREAM _ MUSIC include STREAM _ NOTIFICATION or STREAM _ TTS.
The invention designs different flows aiming at the local loudspeaker of the television with the back end audio processor, the local loudspeaker of the television without the back end audio processor and the television connecting Bluetooth loudspeaker with (or without) the back end audio processor to control the volume of the special audio stream, thereby achieving the following volume limiting target:
when the system master volume is below a threshold value, the special audio stream volume follows the system master volume; when the master volume of the system is above a threshold value, the volume of the special audio stream is kept at the threshold volume; the volume of a special audio stream is limited while the volume of other audio streams is not affected.
Drawings
Fig. 1 shows a local speaker audio transmission flow of a television with a back-end audio processor.
FIG. 2 shows the audio transmission process of the local speaker or Bluetooth speaker of a television without a back-end audio processor
Fig. 3 shows a flow of limiting the volume of a particular audio stream by local speakers of a television with a back-end audio processor.
Fig. 4 shows a flow of limiting the volume of a particular audio stream by local speakers or bluetooth speakers of a television without a back-end audio processor.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1
As shown in fig. 1 and 3, the whole machine is provided with a back-end audio processor, the television supports a bluetooth connection function, the set touch tone is played through STREAM _ NOTIFICATION, and the volume limit is implemented on the touch tone, assuming that the threshold is 30.
When the user is not connected with the Bluetooth sound box and the overall master volume set by the user is below 30, the system calculates the volume of the STREAM _ NOTIFICATION STREAM according to the process 1.1, and the key tone heard by the user is the same as the overall master volume. When the user increases the overall master volume to more than 30, the system calculates the volume of the STREAM _ NOTIFICATION STREAM according to the process 1.2, and the key tone heard by the user is limited to the threshold value.
When a user connects a Bluetooth sound box, and when the overall master volume set by the user is below 30, the system calculates the volume of the STREAM _ NOTIFICATION STREAM according to the process 2.1, and the key tone heard by the user is the same as the overall master volume. When the user increases the overall master volume to more than 30, the system calculates the volume of the STREAM _ NOTIFICATION STREAM according to the process 2.2, and the key tone heard by the user is limited to the threshold value.
Example 2
As shown in fig. 2 and 4, the whole television has no back-end audio processor, supports the bluetooth connection function, sets the touch tone to be played through STREAM _ NOTIFICATION, and implements volume limitation on the touch tone, assuming that the threshold is 30.
When the user is not connected with the Bluetooth sound box and the overall master volume set by the user is below 30, the system calculates the volume of the STREAM _ NOTIFICATION STREAM according to the process 2.1, and the key tone heard by the user is the same as the overall master volume. When the user increases the overall master volume to more than 30, the system calculates the volume of the STREAM _ NOTIFICATION STREAM according to the process 2.2, and the key tone heard by the user is limited to the threshold value.
When a user connects a Bluetooth sound box, and when the overall master volume set by the user is below 30, the system calculates the volume of the STREAM _ NOTIFICATION STREAM according to the process 2.1, and the key tone heard by the user is the same as the overall master volume. When the user increases the overall master volume to more than 30, the system calculates the volume of the STREAM _ NOTIFICATION STREAM according to the process 2.2, and the key tone heard by the user is limited to the threshold value.
Although the present invention has been described herein with reference to the illustrated embodiments thereof, which are intended to be preferred embodiments of the present invention, it is to be understood that the invention is not limited thereto, and that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure.
Claims (4)
1. The method for limiting the volume of the specified audio stream in the smart television is characterized in that:
firstly, the audio with the volume to be limited is appointed to be played in a specific audio stream, so that the separation of audio categories is realized;
secondly, according to the different conditions, carry out corresponding control of appointed audio stream volume, specifically do:
case 1, local speaker of television with back-end audio processor and no bluetooth speaker connected or no bluetooth connection function
Firstly, the volume of the audio stream is changed from being fixed to be set independently; the volume of the audio stream is adjusted, and the rear-end audio processor adjusts the total output volume, so that the volume is adjusted for 2 times; that is, the actual volume of the restricted stream is the volume of the restricted stream (master volume/maximum volume);
for the case of two-stage volume adjustment, the following process is designed:
1.1, when the master volume of the whole machine is less than or equal to a threshold value, fixing the volume of the limited stream to be the maximum volume; the sound of the limited stream is mixed with other sounds and output, and after the volume is adjusted by the rear-end audio processor, the actual volume is the same as the main volume of the whole machine;
flow 1.2 when the master volume of the whole machine is greater than the threshold, the volume of the limited flow is adjusted according to the following method
Volume of limited stream is threshold/(master volume/maximum volume)
When the sound of the limited stream is mixed with other sounds and output, and the volume is adjusted by the back-end audio processor, the actual volume is the same as the threshold value; that is, the actual volume of the restricted stream is the volume of the restricted stream (master volume/max volume) threshold/(master volume/max volume) threshold;
in the process 1.3, the volume of other audio streams is fixed at the maximum value no matter the main volume;
case 2 local speakers for a television without a back-end audio processor, and Bluetooth speakers connected to a television with or without a back-end audio processor
In this case, the television performs volume control by directly adjusting the volume of each stream, and therefore the following flow is designed:
in the process 2.1, before the master volume of the whole machine reaches the set threshold volume, the volume of the limited stream is set to be the same as the master volume of the whole machine;
in the process 2.2, after the main volume of the whole machine exceeds a threshold value, the volume of the limited stream is set to be the same as the threshold volume;
flow 2.3 sets the volume of other audio streams to be the same as the master volume regardless of the master volume.
2. The method for limiting the volume of a specific audio stream in a smart television set according to claim 1, wherein:
before the corresponding control of setting the volume of the audio stream, the method comprises the steps of judging in advance, and specifically comprises the following steps:
when the main volume is adjusted, the current state of the audio output equipment of the television is judged, and then an appropriate audio flow volume calculation mode is adopted:
if the television is provided with a rear-end audio processor and is not connected with a Bluetooth loudspeaker or has no Bluetooth connection function; controlling the main volume of the whole machine through a rear-end audio processor, setting the volume of the limited stream according to the process of the condition 1 by the system, and fixing the volume of other audio streams to be the maximum value;
if the television has no back-end audio processor and is not connected with a Bluetooth loudspeaker or has no Bluetooth connection function; the system sets the volume of the limited stream according to the flow in the case 2, and fixes the volume of other audio streams to the maximum value;
when the television supports the Bluetooth connection function and the Bluetooth loudspeaker is connected, the system sets the volume of the limited stream according to the process of the condition 2, and sets the volume of other audio streams to be the same as the main volume of the whole machine.
3. The method for limiting the volume of the specified audio stream in the smart television set according to claim 1 or 2, wherein:
the specific audio STREAM refers to other audio STREAMs except STREAM _ MUSIC.
4. The method for limiting the volume of the specified audio stream in the smart television set as claimed in claim 3, wherein:
the other audio STREAMs except for STREAM _ MUSIC include STREAM _ NOTIFICATION or STREAM _ TTS.
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| CN114071203A (en) * | 2021-11-10 | 2022-02-18 | 四川长虹电器股份有限公司 | Method and system for controlling specific application volume of smart television |
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