CN101025981B - Digital recording system and method - Google Patents
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- CN101025981B CN101025981B CN 200710017271 CN200710017271A CN101025981B CN 101025981 B CN101025981 B CN 101025981B CN 200710017271 CN200710017271 CN 200710017271 CN 200710017271 A CN200710017271 A CN 200710017271A CN 101025981 B CN101025981 B CN 101025981B
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Abstract
This invention discloses a digital recording system and a method, which first of all collects sound signals by a D/A converter according to a set frequency and converts the sound signal to a digital sound message, then detects the sound strength expressed by the digital sound message to get a sound strength value, then compares the sound strength value with a set strength value to judge if said message is recorded and to process and compress said message when needing the record to be stored in a device, which can control the start and stop of the recording function automatically to further save storage space of a storage device.
Description
Technical field
The present invention relates to a kind of audio recording method, relate in particular to a kind of digital recording system and method.
Background technology
At present, along with the needs of development of science and technology and people's routine work, study and life, sound pick-up outfit becomes the requisite appliance and electronic of every field, and the digital recorder with high-quality recording effect more obtains application more and more widely.Especially all be equipped with function on the various mancarried devices, for people bring great convenience with digital recording.
But the digital recording of well known technology has only beginning and stops, to the control of its record length also by carrying out manually.And after sound-recording function started, the equipment with sound-recording function was then all noted current whole acoustic informations, and the analog sound information of record is converted to numerical information, stored this acoustic information then to the internal memory of equipment.Owing to distinctively various audio information recordings are not got off, and then the way of recording of well known technology causes the waste of the storage area of internal memory.On the contrary, if having a small amount of time not have sound to send in the process of recording, perhaps intensity of sound is hanged down when consequently can not hear clearly, if the user plans to save the storage area, then needs manually to suspend current recording.Under situation about repeatedly occurring, just need to carry out repeatedly the switching function of recording.Therefore, so just in operation, bring some inconvenience.
Summary of the invention
Defective or deficiency in view of above-mentioned prior art exists the object of the present invention is to provide a kind of digital recording system and method, the storage area of the beginning of this method by automatic control sound-recording function and the equipment that stops to save sound-recording function.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of digital recording system is characterized in that, this system comprises:
One analog/digital converter is used for gathering sound signal according to a setpoint frequency, and this sound signal is converted to a digital sound information;
One detecting module is used to detect the intensity of sound that this digital sound information reflects, to obtain an intensity of sound value;
One judge module is used to compare this intensity of sound value and and sets intensity level, to judge whether to write down this digital sound information;
One compression module is used for handling and compressing this digital sound information when this digital sound information of needs record; And
One storage module is used to store the digital sound information of this compression.
According to digital recording system of the present invention, wherein the intensity of sound value is the absolute value sum of facing 2 difference mutually of the scheduled traffic data that digital sound information comprised.
According to digital recording system of the present invention, judge module judges that then digital sound information is an opening entry after the intensity of sound value is accumulated a schedule time greater than the setting intensity level; After the intensity of sound value was accumulated a schedule time less than the setting intensity level, judge module judged that then digital sound information is for stopping record.
According to digital recording system of the present invention, more comprise a time message file generation module, in the record digital sound information, to generate a time message file.Wherein the form of this time message file is: [time] realtime, wherein time is that digital sound information recovers the record length time of recording from stopping to record at every turn, and real time is a current system time, and then when playing a current recording of digital recording information, search maximum record length time (time) and the corresponding current system time (real time) thereof that is not more than file time in the temporal information file according to a file time (filetime) of the current play position of current recording, and pass through formula: the actual recording time of the current sound that realtime+ (filetime-time) then can obtain to play.
The implementation method of above-mentioned recording system comprises following steps: gather sound signal according to a setpoint frequency, and this sound signal is converted to a digital sound information; The detecting intensity of sound that digital sound information reflected is to obtain an intensity of sound value; Comparison intensity of sound value and one is set intensity level, to judge whether to write down this digital sound information; Handle and the compressed digital acoustic information when judging when needing to write down digital sound information; And the digital sound information of storage compression is in a storage device.
According to digital recording method of the present invention, wherein the intensity of sound value is the absolute value sum of facing 2 difference mutually of the scheduled traffic data that comprises of digital sound information.
In addition, greater than after setting intensity level and accumulating a schedule time, then be judged as the opening entry digital sound information, less than after setting intensity level and accumulating a schedule time, then be judged as and stop to write down digital sound information in the intensity of sound value in the intensity of sound value.
Digital recording method of the present invention generates the step of a time message file when more being included in the record digital sound information.In this preferred version, the form of temporal information file is: [time] realtime, wherein time is that digital sound information recovers the one record length period of recording from stopping to record at every turn, and real time is a current system time, and then when playing a current recording of digital recording information, search maximum record length time (time) and the corresponding current system time (real time) thereof that is not more than file time in this time message file according to a file time (filetime) of the current play position of current recording, and pass through formula: the actual recording time of the current sound that realtime+ (filetime-time) then can obtain to play.
Digital recording system of the present invention and method are that the detecting by intensity of sound realizes starting or stoping automatically of sound-recording function, not only can reach the effect of monitoring, and it is simple to operation, and can filter certain sound signal, and then lower in intensity of sound, particularly do not have under the situation of sound, can filter acoustic information effectively, save the storage area of storage device.
And digital recording system of the present invention and method be by generating a time message file in recording, and then the user can more clearly understand current playing sound to when writing down in playback.
Description of drawings
Fig. 1 is the system block diagrams according to digital recording system of the present invention;
Fig. 2 is the method flow diagram according to the digital recording method of well known technology;
Fig. 3 is the method flow diagram according to digital recording method of the present invention;
Fig. 4 is according to the detecting step of the intensity of sound of digital recording method of the present invention and the process flow diagram of determining step.
Primary clustering symbol among the figure is respectively: 10, microprocessor, 12, digital/analog converter, 14, detecting module.16, judge module, 18, compression module, 20, timer, 22, storage module.
Below in conjunction with accompanying drawing the present invention is described in further detail,, then cooperates diagram to make most preferred embodiment and describe in detail about feature of the present invention and enforcement.
Embodiment
Referring to Fig. 1, Fig. 1 is the system block diagram according to digital recording system of the present invention.As shown in the figure, digital recording system of the present invention comprises: an analog/digital converter 12, a detecting module 14, a judge module 16, a compression module 18 and a storage module 22.In this, digital/analog converter 12 is to gather sound signal according to a setpoint frequency, and to change this simulated sound signal be a digital sound information.Detecting module 14, judge module 16 and compression module 18 are to be positioned on the microprocessor 10, and microprocessor 10 can be a CPU (central processing unit) (CPU), carry out corresponding the processing in order to the instruction of sending according to each module on it.
After collecting digital sound information via analog/digital converter 12, detecting module 14 needs the intensity of sound that this current digital sound information reflected is detected, to obtain an intensity of sound value.Here, the intensity of sound value is the absolute value sum of facing 2 difference mutually of one section scheduled traffic data that digital sound information comprised.Whether 16 detecting result decisions that obtained according to detecting module 14 of judge module store current acoustic information.Judge module 16 is at first compared current intensity of sound value and and is set intensity level when judging, if this intensity of sound value is accumulated a schedule time greater than setting intensity level, judges that then this digital sound information is an opening entry, promptly needs to store; Accumulate a schedule time if the intensity of sound value is set intensity level less than this, then judge digital sound information, promptly do not need to store for stopping record.Here, need to set in advance correlation parameters such as schedule time value, setting intensity level.
Especially, judge module 16 can be applicable to the current intensity of sound storage judgement of SoundRec state that has been, and perhaps current state is the storage judgement of non-SoundRec.If current when being non-SoundRec state, then judge current intensity of sound whether greater than setting value and accumulate the schedule time, if, then need to store current acoustic information, promptly start the SoundRec state; If current when being the SoundRec state, then judge current intensity of sound whether less than setting value and accumulate the schedule time, if, then do not need to store current acoustic information, promptly start the non-recording status of sound.Therefore, use the automatic unlatching that realizes audio information recording and stopping.
In this, judge module 16 can carry out corresponding time in conjunction with a timer 20 to be judged, timer 20 be greater than or less than setting value according to the intensity of sound value and or subtract or increase, and be limited within a certain scope.And timing result provided to judge module 16, come in order to 16 these timing result time and schedule times of comparison of judge module, and according to current state, and then carry out the operation that starts or stops of current recording.For example, timer 20 is just carried out and is added counting when the intensity of sound value is lower than setting value, and stops output data when count accumulation is judged as during to the schedule time, promptly suspends recording; Otherwise timer 20 is carried out and is subtracted counting when the intensity of sound value is higher than setting value, and just begins output data during to the schedule time when count accumulation, promptly continues to record.Here, the accumulated time of timer 20 can be continuously, also can be discontinuously.But it is pointed out that timer 20 of the present invention is not limited to the explanation of the foregoing description.
Compression module 18 is in order to the judged result according to judge module 16, the digital sound information of needs record handled and compressed, to store this compressed digital acoustic information in storage module 22.
In addition, digital recording system of the present invention also includes temporal information file of generation when recording, and is used for writing down when recording from stopping to recovering each time writing the recording file current length time (time) to file.Therefore, the user can more be well understood to current institute back sound information and when record in the playback archives.Each time from stopping or suspending and record to when recovering recording, in this time news file, write the current length time of audio archive: time, the current time of having recorded digital sound information of writing down when promptly recording continuation recovery recording from time-out each time, and current system time: real time.The temporal information file that is generated can have following form:
//[time]realtime
[00:00:06] September 11 12:20:15
[01:00:55] September 11 16:12:25
[02:02:06] September 11 20:22:58
[02:35:23] September 12 07:12:47
Like this, time for reading news file in the playback archives is at first determined from beginning the file time of play position: filetime till now according to current playback profile position.And according to the audio archive length time time in the file time filetime query time news file, and therefrom obtain maximum record length time time and the corresponding current system time realtime thereof that is not more than file time filetime.The actual recording time of the current voice files that then can obtain to play by formula realtime+ (filetime-time) then.And then come out this time showing just can allow the user know when the sound of hearing is now recorded.
Because the archives after recording have the archives header, so can being placed on fully, time synchronization information records the last of back generation archives, can't influence the integrality of archives and the correctness of on personal computer, playing.
Describe digital recording method of the present invention in detail below in conjunction with Fig. 3 and Fig. 4.Fig. 3 is according to digital recording method flow diagram of the present invention; And Fig. 4 is detecting step and determining step process flow diagram according to the intensity of sound of digital recording method of the present invention.
Before describing digital recording method of the present invention, at first please refer to Fig. 2, this figure is the process flow diagram of the digital recording method of well known technology.To on the basis of the digital recording method of well known technology, digital recording method of the present invention be made a detailed description now.
As shown in Figure 2, the main implementation method of well known digital recording is: at first via digital/analog converter according to certain frequency collection sound signal (step 101), and the sound signal of this simulation is converted to a digital sound information (step 102), then digital sound information is handled and compressed (step 103), then store the data (step 104) of this compression.In step 105,,, still finish recording to select to continue sound collection and record to whether the finish command is judged.
Please refer to Fig. 3, digital recording method of the present invention as shown in the figure at first also need be via analog/digital converter according to certain frequency collection sound signal (step 201), and the sound signal of this simulation is converted to a digital sound information (step 202).The intensity of sound (step 203) of detecting digital sound information then and being reflected, and according to this intensity of sound and predefined intensity level relatively, whether need to store (step 204) to judge this digital sound information.Then identical with well known technology, the digital sound information that needs are stored is handled and is compressed (step 205), and stores in packed data to a storage device (step 206).And same, in step 207,,, still finish recording to select to continue sound collection and record to whether the finish command is judged.
As shown in Figure 3, different with well known technology is, the present invention also includes the step (step 203) of (step 205) detecting intensity of sound that digital sound information reflected before the digital sound information compression, and the step (step 204) that judges whether to need to store this digital sound information according to the intensity of sound of being detected.Just on well known digital recording basis, increase detecting and judgement, and then realize the automatic recording of acoustic control intensity of sound that current data reflects.
Describe the detecting step (step 203) and the determining step (step 204) of the intensity of sound of digital recording method of the present invention in detail below in conjunction with Fig. 4.
In detecting step (step 203) before, need to set in advance some correlation parameters, comprise the intensity of sound correlative value, how long current intensity of sound just recovers the time parameter T1 of recording greater than this intensity of sound correlative value accumulation, how long current intensity of sound just stops the time parameter T2 to record and the initial value of timer less than the accumulation of this intensity of sound correlative value.After setting above-mentioned each parameter, begin recording, if setting intensity of sound correlative value is 0 then is expressed as common recording.And the present invention also can represent whether carrying out sound-recording function by using light emitting diode.
Like this, the detecting (step 203) of intensity of sound of the present invention and determining step (step 204) are as shown in Figure 4, that at first can get some digital audio datas at set intervals faces sampling spot mutually, and calculate every absolute value sum of facing 2 differences mutually, promptly accumulate two sampling spot variable quantities and as the intensity of sound value (step 301) of digital sound information.Then, whether judge current intensity of sound greater than setting value, i.e. intensity of sound correlative value (step 302).In this embodiment, can cooperate the judgement of carrying out the intensity of sound value in conjunction with a timer, and limit this timer within a certain scope.For example, current intensity of sound is provided with timer countdown (step 303) greater than setting value.And need to judge whether acoustic information storing state of current state, promptly current whether at execution sound recording (step 305).If the sound storing state then still continues the storage (step 309) of current digital sound information; Otherwise representing current is non-recording state, then according to the currency of timer and the difference of initial value, judges whether intensity of sound has accumulated time T 1 (step 307) greater than setting value.If, then current digital sound information is stored (step 309), promptly start the SoundRec function, recover recording state; Otherwise, do not need to store current voice data (step 310), promptly keep non-recording state.
In the determining step of step 302, if current intensity of sound is not more than setting value, set timer and carry out and increase progressively counting (step 304), and also need to judge whether acoustic information storing state of current state, promptly current whether at execution sound recording (step 306).If the current sound recording of not carrying out then still keeps non-recording state, promptly do not carry out voice data and store (step 310); Otherwise representing current is the sound recording executing state, then needs to judge further according to the currency of timer and the difference of initial value whether intensity of sound has accumulated time T 2 (step 308) less than setting value.If, then stop the current recording state, promptly stop the storage (step 310) of acoustic information; Otherwise, then keep this recording state, continue the storage (step 309) of current digital sound information.And final step 309 is back to step 205, and perhaps step 310 is back to 207, with the subsequent step according to the flow performing correspondence of Fig. 3.
Therefore, digital recording method of the present invention is judged startup and the shut-down operation of doing recording according to timer result and initial value and current recording state, and then realize that sound begins recording automatically when reaching setting intensity, intensity is just suspended recording during less than setting value, waits for and continues recording when intensity of sound reaches setting value once more.So can realize sound recording, voiceless sound or sound stop when more weak, rely on intensity of sound to realize the function of recording automatically, not only reach the effect of monitoring, storage area that more can storage device.
In addition, digital recording method of the present invention also includes the step that generates a time message file in this digital sound information of record, write recording file current length time time to file when being used for record and recording from stopping to recover each time, the temporal information file that is wherein generated can have following form:
//[time]realtime
[00:00:06] September 11 12:20:15
[01:00:55] September 11 16:12:25
[02:02:06] September 11 20:22:58
[02:35:23] September 12 07:12:47
Each time from stopping or suspending and record to when recovering recording, in this time news file, write the current length time time of audio archive, the current time of having recorded digital sound information of writing down when promptly recording continuation recovery recording from time-out each time, and current system time: real time.
Like this, time for reading news file in the playback archives is at first determined from beginning the file time of play position: filetime till now according to current playback profile position.And according to the audio archive length time time in the file time filetime query time news file, and therefrom obtain maximum record length time time and the corresponding current system time realtime thereof that is not more than file time filetime.The actual recording time of the current voice files that then can obtain to play by formula realtime+ (filetime-time) then.And then come out this time showing just can allow the user know when the sound of hearing is now recorded.
Therefore, the user can more be well understood to the recording time of current institute back sound information in the playback archives.
Though the present invention has made detailed description with above-mentioned preferred embodiment to the present invention, be not to limit the present invention with the foregoing description.Those skilled in the art should recognize under the situation that does not break away from given technical characterictic of technical solution of the present invention and scope, and the increase that technical characterictic is done, with the replacement of some same contents of this area all should belong to protection scope of the present invention.
Claims (6)
1. a digital recording system is characterized in that, this system comprises:
One analog/digital converter is used for gathering sound signal according to a setpoint frequency, and this sound signal is converted to a digital sound information;
One detecting module is used to detect the intensity of sound that this digital sound information reflects, to obtain an intensity of sound value;
One judge module is used to compare this intensity of sound value and and sets intensity level, to judge whether to write down this digital sound information;
One compression module is used for handling and compressing this digital sound information when this digital sound information of needs record; And
One storage module is used to store the digital sound information of this compression;
Also include in addition to record and generate a temporal information file simultaneously, be used to write down the record length time of recording from stopping to recovering each time; The form of described temporal information file is [time] realtime, wherein time recovers the record length time of recording from stopping to record to for this digital sound information at every turn, realtime is current system time, when a current recording of this digital recording information of broadcast, search time and this corresponding current system time thereof that is not more than this file time in this temporal information file according to the file time of the current play position of this current recording, and the actual recording time of the current voice files that then can obtain to play by formula realtime+ (filetime-time), filetime is a file time.
2. digital recording system as claimed in claim 1 is characterized in that, described judge module judges that then this digital sound information is an opening entry after this intensity of sound value is accumulated a schedule time greater than this setting intensity level; Or
Described judge module judges that then this digital sound information is for stopping record after this intensity of sound value is accumulated a schedule time less than this setting intensity level.
3. digital recording system as claimed in claim 1 is characterized in that, the form of described temporal information file is: [time] realtime; And then when a current recording of this digital recording information of broadcast, filetime according to the current play position of this current recording searches time and this corresponding current system time (realtime) thereof that is not more than this file time in this temporal information file, and passes through formula: the actual recording time of this current sound that realtime+ (filetime-time) then can obtain to play;
Wherein, time recovers the record length time of recording from stopping to record to for this digital sound information at every turn, and realtime is a current system time; Filetime is a file time.
4. a digital recording method is characterized in that, this method may further comprise the steps:
Gather sound signal according to a setpoint frequency, and this sound signal is converted to digital sound information; Detect the intensity of sound that this digital sound information reflects, to obtain an intensity of sound value; Compare this intensity of sound value and and set intensity level, to judge whether to write down this digital sound information; When judge needing this digital sound information of record, handle and compress this digital sound information; And the digital sound information that stores this compression is in a storage device; Also be included in addition and generate a temporal information file when recording, write the step of recording file current length time when being used for from stopping to recovering, recording each time to file; The form of described temporal information file is [time] realtime, wherein time recovers the record length time of recording from stopping to record to for this digital sound information at every turn, realtime is current system time, when a current recording of this digital recording information of broadcast, search time and this corresponding current system time thereof that is not more than this file time in this temporal information file according to the file time of the current play position of this current recording, and the actual recording time of this current sound that then can obtain to play by formula realtime+ (filetime-time), filetime is a file time.
6. digital recording method as claimed in claim 5 is characterized in that, described intensity of sound value is the adjacent two sampling spot variable quantity sums of accumulative total of the scheduled traffic data that this digital sound information comprised.
7. digital recording method as claimed in claim 5 is characterized in that, described intensity of sound value then is judged as this digital sound information of opening entry after accumulating a schedule time greater than this setting intensity level; Or
Described intensity of sound value is less than after setting intensity level and accumulating a schedule time, then is judged as to stop to write down this digital sound information.
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| CN 200710017271 CN101025981B (en) | 2007-01-23 | 2007-01-23 | Digital recording system and method |
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| CN 200710017271 CN101025981B (en) | 2007-01-23 | 2007-01-23 | Digital recording system and method |
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| CN101025981B true CN101025981B (en) | 2010-04-07 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101458944B (en) * | 2008-12-31 | 2013-01-09 | 无锡中星微电子有限公司 | Sound recording control method and sound recording device |
| CN102655009B (en) * | 2008-12-31 | 2014-12-17 | 无锡中星微电子有限公司 | Voice record controlling method and voice recording device |
| JP4873031B2 (en) * | 2009-03-18 | 2012-02-08 | カシオ計算機株式会社 | Imaging apparatus, imaging method, and program |
| KR101417975B1 (en) | 2010-10-29 | 2014-07-09 | 안후이 유에스티씨 아이플라이텍 캄파니 리미티드 | Method and system for endpoint automatic detection of audio record |
| CN102456343A (en) * | 2010-10-29 | 2012-05-16 | 安徽科大讯飞信息科技股份有限公司 | Recording end point detection method and system |
| CN102215286B (en) * | 2011-04-06 | 2014-11-19 | 扬州大学 | An Embedded Multi-channel Telephone Recording and Time Recording System |
| CN102403007A (en) * | 2011-11-22 | 2012-04-04 | 深圳市万兴软件有限公司 | Method and system for automatically recording songs |
| CN103258550A (en) * | 2012-02-21 | 2013-08-21 | 爱国者电子科技有限公司 | Voice-control voice recording device |
| CN103778925B (en) * | 2012-10-22 | 2017-09-22 | 爱国者电子科技有限公司 | The recording device of recording is controlled under recording circuit closed mode |
| CN104202321B (en) * | 2014-09-02 | 2017-10-03 | 上海天脉聚源文化传媒有限公司 | A kind of method and device of sound recording |
| CN107071170A (en) * | 2017-04-01 | 2017-08-18 | 深圳天珑无线科技有限公司 | A kind of method and device of recording |
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| CN1140859A (en) * | 1995-07-13 | 1997-01-22 | 三星电子株式会社 | Data recording device and method for semiconductor memory card |
| US6031915A (en) * | 1995-07-19 | 2000-02-29 | Olympus Optical Co., Ltd. | Voice start recording apparatus |
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| CN1140859A (en) * | 1995-07-13 | 1997-01-22 | 三星电子株式会社 | Data recording device and method for semiconductor memory card |
| US6031915A (en) * | 1995-07-19 | 2000-02-29 | Olympus Optical Co., Ltd. | Voice start recording apparatus |
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