CN105404654A - Audio file playing method and device - Google Patents
Audio file playing method and device Download PDFInfo
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- CN105404654A CN105404654A CN201510734076.1A CN201510734076A CN105404654A CN 105404654 A CN105404654 A CN 105404654A CN 201510734076 A CN201510734076 A CN 201510734076A CN 105404654 A CN105404654 A CN 105404654A
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- loudness
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/60—Information retrieval; Database structures therefor; File system structures therefor of audio data
- G06F16/68—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
- G06F16/686—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using information manually generated, e.g. tags, keywords, comments, title or artist information, time, location or usage information, user ratings
Abstract
The invention discloses an audio file playing method and device. The method comprises the following steps: analyzing the loudness of audio signals of audio files; determining a playing time quantum, the loudness of which is higher than a preset threshold, according to the loudness of the audio signal; and playing the audio file corresponding to the playing time quantum, the loudness of which is higher than the preset threshold. According to the audio file playing method and device, the blank areas of the audio files are not played, and the playing efficiency of the audio files can be improved.
Description
Technical field
The present invention relates to multimedia technology field, particularly relate to a kind of audio file play method and device.
Background technology
Usually in an audio file, all there is a white space at the waveform two ends of the sound wave of its sound signal, the loudness of the sound signal of white space is minimum, amplitude of wave form is the most weak, but, audio player all can be play white space before beginning displaying audio file and after terminating displaying audio file, causes the reproduction time of audio file to extend, reduces playing efficiency.
Summary of the invention
The embodiment of the present invention provides a kind of audio file play method and device, to improve the playing efficiency of audio file.
On the one hand, provide a kind of audio file play method, described method comprises:
Resolve the loudness of the sound signal of audio file;
According to the loudness of described sound signal, determine the reproduction time section of loudness higher than predetermined threshold value;
Play the audio file of described loudness higher than the reproduction time section correspondence of predetermined threshold value.
Preferably, the loudness of the sound signal of described parsing audio file, comprising:
Obtain the wave-shape amplitude value of described sound signal;
According to described wave-shape amplitude value, analyze the loudness of described sound signal;
Wherein, described wave-shape amplitude value and described loudness direct proportionality.
Preferably, the described loudness according to described sound signal, determine the reproduction time section of loudness higher than predetermined threshold value, comprising:
Determine that described wave-shape amplitude value is the reproduction time section of zero, the reproduction time segment mark being zero by described wave-shape amplitude value is designated as mute signal;
Determine that described wave-shape amplitude is worth non-vanishing reproduction time section, described wave-shape amplitude is worth non-vanishing reproduction time segment mark and is designated as loudness signal, reproduction time section corresponding to described loudness signal is the reproduction time section of described loudness higher than predetermined threshold value.
Preferably, described method also comprises:
For continuous print wave-shape amplitude value be zero reproduction time section and wave-shape amplitude be worth non-vanishing reproduction time section, record described mute signal terminate to the time point having described loudness signal to occur be very first time point;
Record described loudness signal terminate to the time point having described mute signal to occur be the second time point.
Preferably, the described loudness of described broadcasting, higher than the audio file of the reproduction time section correspondence of predetermined threshold value, comprising:
Play the audio file between point of the described very first time and described second time point.
On the other hand, provide a kind of audio file playing device, described device comprises:
Resolution unit, for resolving the loudness of the sound signal of audio file;
Determining unit, for the loudness according to described sound signal, determines the reproduction time section of loudness higher than predetermined threshold value;
Broadcast unit, for playing the audio file of described loudness higher than the reproduction time section correspondence of predetermined threshold value.
Preferably, described resolution unit comprises:
Acquiring unit, for obtaining the wave-shape amplitude value of described sound signal;
Analytic unit, for according to described wave-shape amplitude value, analyzes the loudness of described sound signal;
Wherein, described wave-shape amplitude value and described loudness direct proportionality.
Preferably, described determining unit specifically for:
Determine that described wave-shape amplitude value is the reproduction time section of zero, the reproduction time segment mark being zero by described wave-shape amplitude value is designated as mute signal;
Determine that described wave-shape amplitude is worth non-vanishing reproduction time section, described wave-shape amplitude is worth non-vanishing reproduction time segment mark and is designated as loudness signal, reproduction time section corresponding to described loudness signal is the reproduction time section of described loudness higher than predetermined threshold value.
Preferably, described device also comprises:
Record cell, for being that reproduction time section and the wave-shape amplitude of zero are worth non-vanishing reproduction time section for continuous print wave-shape amplitude value, record described mute signal terminate to the time point having described loudness signal to occur be very first time point; And
Described record cell also for record described loudness signal terminate to the time point having described mute signal to occur be the second time point.
Preferably, described broadcast unit specifically for:
Play the audio file between point of the described very first time and described second time point.
A kind of audio file play method provided according to the embodiment of the present invention and device, by resolving the loudness of the sound signal of audio file, according to the loudness of described sound signal, determine the reproduction time section of loudness higher than predetermined threshold value, playback loudness is higher than the audio file of the reproduction time section correspondence of predetermined threshold value, namely can not play the white space of audio file, the playing efficiency of audio file can be improved.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The schematic flow sheet of a kind of audio file play method that Fig. 1 provides for the embodiment of the present invention;
The schematic flow sheet of the another kind of audio file play method that Fig. 2 provides for the embodiment of the present invention;
The structural representation of a kind of audio file playing device that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the another kind of audio file playing device that Fig. 4 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The schematic flow sheet of a kind of audio file play method that Fig. 1 provides for the embodiment of the present invention, the method comprises the following steps:
Step S101, resolves the loudness of the sound signal of audio file.
With regular sound wave frequency, the changes in amplitude information of voice, music and audio in audio file, it is the form of expression of the sound signal of audio file.Sound signal is a kind of continually varying simulating signal, can show with a continuous print sound wave curve.The amplitude of sound wave is presented as loudness, if the audio signal loudness in one of an audio file section of reproduction time section is lower, can think that the sound signal in this reproduction time section is white space, therefore, needs the loudness of resolving sound signal.
Step S102, according to the loudness of described sound signal, determines the reproduction time section of loudness higher than predetermined threshold value.
Whole audio file or sound signal are divided into several reproduction time sections, in some reproduction time section, such as, all there is a white space at the waveform two ends of the sound wave of sound signal, the loudness of the sound signal of white space is less than or equal to the first setting loudness, the sound signal can determining this reproduction time section is mute signal, row labels of going forward side by side; And for some reproduction time section, its loudness is more than or equal to the second setting loudness, can determine that the sound signal of this reproduction time section is loudness signal, row labels of going forward side by side.The reproduction time section being labeled as loudness signal is the reproduction time section of loudness higher than predetermined threshold value.
Step S103, plays the audio file of described loudness higher than the reproduction time section correspondence of predetermined threshold value.
The present embodiment is when displaying audio file, mute signal or loudness signal is marked as according to reproduction time section, skip flag is the reproduction time section of mute signal, only play the audio file being labeled as the reproduction time section correspondence of loudness signal, namely playback loudness is higher than the audio file of the reproduction time section correspondence of predetermined threshold value, then can not play the white space of audio file, the playing efficiency of audio file can be improved.
According to a kind of audio file play method that the embodiment of the present invention provides, by resolving the loudness of the sound signal of audio file, according to the loudness of described sound signal, determine the reproduction time section of loudness higher than predetermined threshold value, playback loudness is higher than the audio file of the reproduction time section correspondence of predetermined threshold value, namely can not play the white space of audio file, the playing efficiency of audio file can be improved.
The schematic flow sheet of the another kind of audio file play method that Fig. 2 provides for the embodiment of the present invention, the method comprises the following steps:
Step S201, obtains the wave-shape amplitude value of the sound signal of audio file.
Before displaying audio file, detect the sound signal of audio file, the audio file in the present embodiment comprises music, voice document etc.
Wave-shape amplitude value refers to sound wave amplitude size, by the analysis to sound signal, can obtain the wave-shape amplitude value of the sound signal of whole audio file.
Step S202, according to described wave-shape amplitude value, analyzes the loudness of described sound signal.
Wave-shape amplitude value and loudness direct proportionality, when wave-shape amplitude value is minimum value, the loudness of sound signal is minimum, and when wave-shape amplitude value is maximal value, the loudness of sound signal is maximum.
Step S203, determine that described wave-shape amplitude value is the reproduction time section of zero, the reproduction time segment mark being zero by described wave-shape amplitude value is designated as mute signal.
The wave-shape amplitude value that is some or multiple reproduction time section obtaining sound signal when analysis is minimum value, namely loudness is less than or equal to the first setting loudness, the sound signal of this reproduction time section is labeled as mute signal, and recording mark is the reproduction time section of mute signal, in the present embodiment, the quiet sound signal not belonging to audio file.
Step S204, when determining that described wave-shape amplitude is worth non-vanishing reproduction time section, is worth non-vanishing reproduction time segment mark and is designated as loudness signal by described wave-shape amplitude.
Similarly, the sound signal that the wave-shape amplitude value that analysis obtains is greater than one or more reproduction time section correspondences of minimum value is labeled as loudness signal, and namely this loudness is more than or equal to the second setting loudness, and recording mark is the reproduction time section of loudness signal.Reproduction time section corresponding to this loudness signal is the reproduction time section of described loudness higher than predetermined threshold value.
Step S205, for continuous print wave-shape amplitude value be zero reproduction time section and wave-shape amplitude be worth non-vanishing reproduction time section, record described mute signal terminate to the time point having described loudness signal to occur be very first time point.
In the two or more reproduction time section of continuous print, mute signal is terminated be labeled as A time point to the time point having loudness signal to occur.
Step S206, record described loudness signal terminate to the time point having described mute signal to occur be the second time point.
Loudness signal is terminated to there being the time point of quiet appearance to be labeled as B time point.
Step S207, plays the audio file between point of the described very first time and described second time point.
During displaying audio file, put the time at A, B place detection time, using the initial reproduction time of the time at time point A place as audio file; Using the end reproduction time of the time at time point B place as audio file.During displaying audio file, directly play to time point B from time point A, the sound signal belonging to quiet time point is not play, thus the real time of displaying audio file is the time of audio file sound intermediate frequency signal, can not play the white space of audio file, the playing efficiency of audio file can be improved.
According to a kind of audio file play method that the embodiment of the present invention provides, by resolving the loudness of the sound signal of audio file, according to the loudness of described sound signal, determine the reproduction time section of loudness higher than predetermined threshold value, playback loudness is higher than the audio file of the reproduction time section correspondence of predetermined threshold value, namely can not play the white space of audio file, the playing efficiency of audio file can be improved.
The structural representation of a kind of audio file playing device that Fig. 3 provides for the embodiment of the present invention, this device 1000 comprises:
Resolution unit 11, for resolving the loudness of the sound signal of audio file.
With regular sound wave frequency, the changes in amplitude information of voice, music and audio in audio file, it is the form of expression of the sound signal of audio file.Sound signal is a kind of continually varying simulating signal, can show with a continuous print sound wave curve.The amplitude of sound wave is presented as loudness, if the audio signal loudness in one of an audio file section of reproduction time section is lower, can think that the sound signal in this reproduction time section is white space, and therefore, resolution unit 11 needs the loudness of resolving sound signal.
Determining unit 12, for the loudness according to described sound signal, determines the reproduction time section of loudness higher than predetermined threshold value.
Whole audio file or sound signal are divided into several reproduction time sections, in some reproduction time section, such as, all there is a white space at the waveform two ends of the sound wave of sound signal, the loudness of the sound signal of white space is less than or equal to the first setting loudness, determining unit 12 can determine that the sound signal of this reproduction time section is mute signal, row labels of going forward side by side; And for some reproduction time section, its loudness is more than or equal to the second setting loudness, determining unit 12 can determine that the sound signal of this reproduction time section is loudness signal, row labels of going forward side by side.The reproduction time section being labeled as loudness signal is the reproduction time section of loudness higher than predetermined threshold value.
Broadcast unit 13, for playing the audio file of described loudness higher than the reproduction time section correspondence of predetermined threshold value.
The present embodiment is when displaying audio file, broadcast unit 13 is marked as mute signal or loudness signal according to reproduction time section, skip flag is the reproduction time section of mute signal, only play the audio file being labeled as the reproduction time section correspondence of loudness signal, namely playback loudness is higher than the audio file of the reproduction time section correspondence of predetermined threshold value, then can not play the white space of audio file, the playing efficiency of audio file can be improved.
According to a kind of audio file playing device that the embodiment of the present invention provides, by resolving the loudness of the sound signal of audio file, according to the loudness of described sound signal, determine the reproduction time section of loudness higher than predetermined threshold value, playback loudness is higher than the audio file of the reproduction time section correspondence of predetermined threshold value, namely can not play the white space of audio file, the playing efficiency of audio file can be improved.
The structural representation of the another kind of audio file playing device that Fig. 4 provides for the embodiment of the present invention, this device 2000 comprises:
Resolution unit 21, for resolving the loudness of the sound signal of audio file.
In the present embodiment, resolution unit 21 comprises acquiring unit 211 and analytic unit 212.
Acquiring unit 211, for obtaining the wave-shape amplitude value of the sound signal of audio file.
Before displaying audio file, detect the sound signal of audio file, the audio file in the present embodiment comprises music, voice document etc.
Wave-shape amplitude value refers to sound wave amplitude size, and by the analysis to sound signal, acquiring unit 211 can obtain the wave-shape amplitude value of the sound signal of whole audio file.
Analytic unit 212, for according to described wave-shape amplitude value, analyzes the loudness of described sound signal.
Wave-shape amplitude value and loudness direct proportionality, when wave-shape amplitude value is minimum value, the loudness of sound signal is minimum, and when wave-shape amplitude value is maximal value, the loudness of sound signal is maximum.
Determining unit 22, for determining that described wave-shape amplitude value is the reproduction time section of zero, the reproduction time segment mark being zero by described wave-shape amplitude value is designated as mute signal.
The wave-shape amplitude value that is some or multiple reproduction time section obtaining sound signal when analysis is minimum value, namely loudness is less than or equal to the first setting loudness, the sound signal of this reproduction time section is labeled as mute signal by determining unit 22, and recording mark is the reproduction time section of mute signal, in the present embodiment, the quiet sound signal not belonging to audio file.
When determining unit 22 is also for determining that described wave-shape amplitude is worth non-vanishing reproduction time section, described wave-shape amplitude is worth non-vanishing reproduction time segment mark and is designated as loudness signal.
Similarly, the sound signal that the wave-shape amplitude value that analysis obtains is greater than one or more reproduction time section correspondences of minimum value is labeled as loudness signal, and namely this loudness is more than or equal to the second setting loudness, and recording mark is the reproduction time section of loudness signal.Reproduction time section corresponding to this loudness signal is the reproduction time section of described loudness higher than predetermined threshold value.
Record cell 23, for being that reproduction time section and the wave-shape amplitude of zero are worth non-vanishing reproduction time section for continuous print wave-shape amplitude value, record described mute signal terminate to the time point having described loudness signal to occur be very first time point.
In the two or more reproduction time section of continuous print, mute signal is terminated be labeled as A time point to the time point having loudness signal to occur.
Record cell 23 also for record described loudness signal terminate to the time point having described mute signal to occur be the second time point.
Loudness signal is terminated to there being the time point of quiet appearance to be labeled as B time point.
Broadcast unit 24, for playing the audio file between point of the described very first time and described second time point.
During broadcast unit 24 displaying audio file, put the time at A, B place detection time, using the initial reproduction time of the time at time point A place as audio file; Using the end reproduction time of the time at time point B place as audio file.During displaying audio file, directly play to time point B from time point A, the sound signal belonging to quiet time point is not play, thus the real time of displaying audio file is the time of audio file sound intermediate frequency signal, can not play the white space of audio file, the playing efficiency of audio file can be improved.
According to a kind of audio file playing device that the embodiment of the present invention provides, by resolving the loudness of the sound signal of audio file, according to the loudness of described sound signal, determine the reproduction time section of loudness higher than predetermined threshold value, playback loudness is higher than the audio file of the reproduction time section correspondence of predetermined threshold value, namely can not play the white space of audio file, the playing efficiency of audio file can be improved.
It should be noted that, for aforesaid each embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not by the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in instructions all belongs to preferred embodiment, and involved action and module might not be that the present invention is necessary.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention can use hardware implementing, or firmware realizes, or their array mode realizes.When implemented in software, above-mentioned functions can be stored in computer-readable medium or as the one or more instruction on computer-readable medium or code and transmit.Computer-readable medium comprises computer-readable storage medium and communication media, and wherein communication media comprises any medium being convenient to transmit computer program from a place to another place.Storage medium can be any usable medium that computing machine can access.As example but be not limited to: computer-readable medium can comprise random access memory (RandomAccessMemory, RAM), ROM (read-only memory) (Read-OnlyMemory, ROM), EEPROM (Electrically Erasable Programmable Read Only Memo) (ElectricallyErasableProgrammableRead-OnlyMemory, EEPROM), read-only optical disc (CompactDiscRead-OnlyMemory, or other optical disc storage CD-ROM), magnetic disk storage medium or other magnetic storage apparatus, or the program code that can be used in carrying or storing the expectation with instruction or data structure form also can by any other medium of computer access.In addition.Any connection can be suitable become computer-readable medium.Such as, if software uses concentric cable, optical fiber cable, twisted-pair feeder, Digital Subscriber Line (DigitalSubscriberLine, DSL) or the wireless technology of such as infrared ray, radio and microwave and so on from website, server or other remote source, so the wireless technology of concentric cable, optical fiber cable, twisted-pair feeder, DSL or such as infrared ray, wireless and microwave and so on be included in affiliated medium fixing in.As used in the present invention, dish (Disk) and dish (disc) comprise compression laser disc (CD), laser dish, laser disc, Digital Versatile Disc (DVD), floppy disk and Blu-ray Disc, the usual magnetic of its mid-game copy data, what dish then carried out optics with laser copies data.Combination above also should be included within the protection domain of computer-readable medium.
In a word, the foregoing is only the preferred embodiment of technical solution of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an audio file play method, is characterized in that, described method comprises:
Resolve the loudness of the sound signal of audio file;
According to the loudness of described sound signal, determine the reproduction time section of loudness higher than predetermined threshold value;
Play the audio file of described loudness higher than the reproduction time section correspondence of predetermined threshold value.
2. the method for claim 1, is characterized in that, the loudness of the sound signal of described parsing audio file, comprising:
Obtain the wave-shape amplitude value of described sound signal;
According to described wave-shape amplitude value, analyze the loudness of described sound signal;
Wherein, described wave-shape amplitude value and described loudness direct proportionality.
3. method as claimed in claim 2, is characterized in that, the described loudness according to described sound signal, determines the reproduction time section of loudness higher than predetermined threshold value, comprising:
Determine that described wave-shape amplitude value is the reproduction time section of zero, the reproduction time segment mark being zero by described wave-shape amplitude value is designated as mute signal;
Determine that described wave-shape amplitude is worth non-vanishing reproduction time section, described wave-shape amplitude is worth non-vanishing reproduction time segment mark and is designated as loudness signal, reproduction time section corresponding to described loudness signal is the reproduction time section of described loudness higher than predetermined threshold value.
4. method as claimed in claim 3, it is characterized in that, described method also comprises:
For continuous print wave-shape amplitude value be zero reproduction time section and wave-shape amplitude be worth non-vanishing reproduction time section, record described mute signal terminate to the time point having described loudness signal to occur be very first time point;
Record described loudness signal terminate to the time point having described mute signal to occur be the second time point.
5. method as claimed in claim 4, it is characterized in that, the described loudness of described broadcasting, higher than the audio file of the reproduction time section correspondence of predetermined threshold value, comprising:
Play the audio file between point of the described very first time and described second time point.
6. an audio file playing device, is characterized in that, described device comprises:
Resolution unit, for resolving the loudness of the sound signal of audio file;
Determining unit, for the loudness according to described sound signal, determines the reproduction time section of loudness higher than predetermined threshold value;
Broadcast unit, for playing the audio file of described loudness higher than the reproduction time section correspondence of predetermined threshold value.
7. device as claimed in claim 6, it is characterized in that, described resolution unit comprises:
Acquiring unit, for obtaining the wave-shape amplitude value of described sound signal;
Analytic unit, for according to described wave-shape amplitude value, analyzes the loudness of described sound signal;
Wherein, described wave-shape amplitude value and described loudness direct proportionality.
8. device as claimed in claim 7, is characterized in that, described determining unit specifically for:
Determine that described wave-shape amplitude value is the reproduction time section of zero, the reproduction time segment mark being zero by described wave-shape amplitude value is designated as mute signal;
Determine that described wave-shape amplitude is worth non-vanishing reproduction time section, described wave-shape amplitude is worth non-vanishing reproduction time segment mark and is designated as loudness signal, reproduction time section corresponding to described loudness signal is the reproduction time section of described loudness higher than predetermined threshold value.
9. device as claimed in claim 8, it is characterized in that, described device also comprises:
Record cell, for being that reproduction time section and the wave-shape amplitude of zero are worth non-vanishing reproduction time section for each continuous print wave-shape amplitude value, record described mute signal terminate to the time point having described loudness signal to occur be very first time point; And
Described record cell also for record described loudness signal terminate to the time point having described mute signal to occur be the second time point.
10. device as claimed in claim 9, is characterized in that, described broadcast unit specifically for:
Play the audio file between point of the described very first time and described second time point.
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| CN201510734076.1A CN105404654A (en) | 2015-10-30 | 2015-10-30 | Audio file playing method and device |
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| CN201510734076.1A CN105404654A (en) | 2015-10-30 | 2015-10-30 | Audio file playing method and device |
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Application publication date: 20160316 |