CN1567241A - Recording method of continuous sound data - Google Patents

Abstract

The invention provides a recording method of continuous sound data, suitable for being carried on in the computer system with a multithread microprocessor, the invention uses the computer system to read the continuous sound data, and sample continuously, then record the data obtained by sampling in a buffer recording area in order; the invention provides more than one first auxiliary thread and one second auxiliary thread when the using space of the buffer recording area is insufficient, wherein the first auxiliary thread is used for processing the data in the buffer recording area, and the second auxiliary thread is used for recording the subsequent sampling data in another buffer recording area in sequence.

Description

Recording method of continuous sound data

technical field

The invention relates to a recording technology, in particular to a method for recording continuous sound materials.

Background technique

Existing recording technology is to use a computer system to record continuous sound data (such as: analog audio signal), and in the computer system, some internal memory needs to be allocated as the buffer recording area 10 (as shown in Figure 1), and the buffer recording area 10 It has at least one data field 100 and a status field 102, wherein the data field 100 is used to store the data after the computer system samples the continuous sound data, and the status field 102 is used to store the current usage status of the buffer recording area 10, if the usage status It is a processing state, which means that the sampled data in the buffer record area 10 is being processed by the computer system, and if the use state is a standby state, it means that the buffer record area 10 is storing the sampled data.

The size of the buffer recording area 10 will directly affect the continuity and time delay of the recorded sound. If the buffer recording area 10 is larger, the sample data that can be recorded will be more and more complete, so that the continuity of the recorded sound is better, but because the computer system must process more sample data, the time delay of the recorded sound will be caused. Conversely, if the buffer recording area 10 is smaller, the time delay of the recorded sound can be improved, but its continuity will be worse. Therefore, the sound recorded with the prior art cannot take both continuity and time delay into account.

Furthermore, the way in the prior art is to make the computer system start to process (compress, store, etc.) the sampling data in the buffer recording area 10 when the available space of a buffer recording area 10 is insufficient, and then release the buffer recording area The preparatory state of 10 is changed to a processing state, so that the subsequent sampling data is put into another buffer recording area 10, and then the state of this other buffer recording area is set as a preparatory state, and so on, until the sound Collection complete. It can be seen from the above that the computer system needs to perform quite a lot of cumbersome work, resulting in the inability to continuously record audio data, which is the main factor for the generally poor continuity of audio recordings using the prior art.

Contents of the invention

In order to overcome the shortcomings of the above-mentioned prior art, the main purpose of the present invention is to provide a recording method for continuous sound data, which solves the problem of poor continuity of the recorded sound in the prior art, and then enables the recorded sound to take into account the continuity at the same time. and time delay.

In order to achieve the above-mentioned purpose, the method for recording continuous audio data of the present invention is suitable for carrying out in a computer system with a multi-threaded microprocessor, wherein the multi-threaded microprocessor is used to switch and execute in more than one thread, the method At least including: reading the continuous audio data, and continuously sampling the continuous audio data; recording the sampled data in a buffer recording area in sequence; when the buffer recording area has insufficient space, providing more than one A first auxiliary thread, the first auxiliary thread is used to process the data in the buffer record area; and, a second auxiliary thread is provided, and the second auxiliary thread is used to sequentially record subsequent sampled data in another buffer record area.

The method for recording continuous audio data as described above, wherein the steps of providing more than one first auxiliary thread and providing a second auxiliary thread can be performed in parallel; the state of the buffer recording area processed by the first auxiliary thread is set to one processing state; and the state of another buffer record area processed by the second auxiliary thread is set to a ready state; the first auxiliary thread is used to perform at least the following steps: read the data in the buffer record area, and the read The data is stored in a storage device; and the data in the buffer recording area is cleared so that the buffer memory area is used for storing the next data; and the continuous sound data is an analog audio signal; the storage device is a disk device.

To sum up, the present invention solves the problem of poor continuity of the recorded sound in the prior art. By using the present invention, the recorded sound can be both continuous and time-delayed.

Description of drawings

FIG. 1 is a logical schematic diagram of a buffer recording area used in the present invention.

Fig. 2 is a computer system architecture diagram that can be used by the present invention

Figure 3 is a flow chart of the method of the present invention.

Detailed ways

Example

The purpose of the present invention is to use multithreading (thread) technology to carry out the recording of continuous sound data, namely by creating a plurality of auxiliary threads, the data in the buffer recording area 10 is processed respectively, and the use of the response processing buffer recording area 10 Out of space event (event). Therefore, the present invention is suitable to be implemented in a computer system with a multi-threaded microprocessor, as shown in FIG. 2 , which is a computer system architecture diagram that can be used in the present invention. In FIG. 2 , the computer system at least includes an input/output device 20 , a memory 22 , a multi-thread microprocessor 24 and a storage device 26 . The computer system refers to an electronic device (not marked) for users to perform recording processing such as a personal desktop computer, a notebook personal computer, a digital voice recorder, a digital personal assistant or a mobile phone. In the following embodiments, the notebook personal The computer explains the recording method of the continuous audio data of the present invention. To simplify the drawings and descriptions, the system architecture here only shows system components related to the present invention, and other irrelevant system components are not shown in the drawings.

The input/output device 20 is mainly used to receive continuous sound data from the outside, such as a sound collector (microphone), and to play the sound data recorded by the computer system, such as a loudspeaker (speaker); and the memory 22 can dynamically There is at least one buffer recording area 220 allocated, the logical structure of buffer recording area 220 can be referred to Fig. 1, and it is mainly used for storing the data after computer system samples continuous sound data; Multi-threaded microprocessor 24 is used for detecting this Whether the sound data stored in the buffer recording area 220 of the internal memory 22 is filled up, it can be an Intel series microprocessor chip; When the data is about to be full, the audio data stored in the buffer recording area 220 is stored in the storage device 26, and the storage device 26 can be realized by a disk device.

Figure 3 is a flow chart of the method of the present invention. First, step 300 is to receive a continuous sound data through the input/output device 20 of the computer system as shown in Figure 2, and continuously sample the continuous sound data, the sampling frequency can be determined by the user, and then proceed to step 302 .

In the step 302 , the computer system sequentially records the sampled data in a buffer recording area 220 in the memory 22 , and then proceeds to step 303 .

In the step 303 , the computer system judges whether the buffer recording area 220 storing the sampled data will be filled with the sampled data, and if so, proceeds to the step 304 ; otherwise, returns to the step 303 .

In the step 304 , the computer system takes out all the sampled data from the buffer recording area 220 filled with the sampled data, and stores the taken out sampled data in the storage device 26 , and then proceeds to the step 305 .

In the step 305 , the computer system clears the contents of the buffer record area 220 filled with the sampled data for storage when the computer system receives the sampled data next time, and then proceeds to step 306 .

In the step 306, the computer system searches for the next buffer recording area (222 or 224) from the internal memory 22, and sets it as a standby state, for the computer system to record the sampled data processed subsequently in the existing In the buffer recording area (222 or 224) that is set as the standby state, then return to the step 300, so that the computer system repeatedly stores the processing sample data until the continuous audio data recording is completed.

Wherein, steps 304 to 305 shown in FIG. 3 can be processed in parallel with step 306, that is, on the one hand, the computer system processes the buffer recording area 220 filled with sampled data, and on the other hand processes the data from the internal memory 22. Another buffer recording area (222 or 224) is processed, whereby the sampling data processed by the computer device is continuously stored, wherein, the storage device 26 assists the processing of the computer system on data storage to resolve data It solves the problem of discontinuous storage and provides a storage technology for multi-threaded audio data.

In summary, the present invention can greatly shorten the processing time of the sampling data in the buffer recording area, and improve the execution efficiency of the recording program; moreover, the buffer recording area in the processing state can be recovered in time, so that the continuous sampling action can be It goes smoothly, and indirectly reduces the memory space of the allocated buffer record area, thus saving system resources. Since the present invention uses multi-threading technology, and the buffer recording area can be set to have a smaller memory space, the present invention has better time delay, so it has certain advantages, and is especially suitable for the occasion of real-time transmission of voice data , such as: video conferencing, etc., and at the same time have the characteristics of continuity.

Claims (6)

1, a kind of recording method of continuous audio document is characterized in that, is adapted at having in the computer system of a multithreaded microprocessor carrying out, and wherein this multithreaded microprocessor is in order to switch at least one thread and to carry out, and this method comprises at least:

(a) read this continuous audio document, and this continuous audio document is taken a sample continuously;

(b) data that sampling is obtained is recorded in a buffering posting field in order;

(c) when the usage space deficiency of this buffering posting field, carry out the following step:

(c1) provide at least one first worker thread, this first worker thread is in order to handle the data in this buffering posting field; And

(c2) provide one second worker thread, this second worker thread is in order to be recorded in another buffering posting field in order with sampling data subsequently.

2, the recording method of continuous audio document as claimed in claim 1 is characterized in that, this step (c1) and step (c2) can parallelly be carried out.

3, the recording method of continuous audio document as claimed in claim 1 or 2 is characterized in that, this recording method also comprises:

The state of the buffering posting field in the step (c1) is made as a treatment state; And

The state of another buffering posting field in the step (c2) is made as a readiness.

4, the recording method of continuous audio document as claimed in claim 1 or 2 is characterized in that, first worker thread in this step (c1) is in order to carry out the following step at least:

Read the data in this buffering posting field, this is read data storage in a storage device; And

Remove the data in this buffering posting field, use for the data storage of starting writing to make this buffer memory zone.

5, the recording method of continuous audio document as claimed in claim 1 or 2 is characterized in that, this continuous audio document is a simulated audio signal.

6, the recording method of continuous audio document as claimed in claim 4 is characterized in that, this storage device is a disk set.

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