JP2003015700A - Method and device for preparing sound data pattern from waveform time series signal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To convert a waveform signal as a sound pattern which is recognized easily for a human being, and to transmit the signal. SOLUTION: In the method for preparing a signal for outputting as a pattern, with which features as time series data of waveform signals are recognized easily for the human being, this method is composed of a basic rhythm pattern detecting means, a local disturbance detecting means and a sound data pattern converting means as a whole. Then, the basic rhythm pattern detecting means has a function of obtaining the level of energy of a basic frequency component and respective frequency components comprising a waveform by analyzing the frequency of the time series signal of waveforms, the local disturbance detecting means has a function of extracting waveform data except the waveform composed of the basic frequency component as data based on local disturbance, and the sound data pattern converting means has a function of combining the basic rhythm pattern and a sound data pattern based on the local disturbance and converting these patterns to sound data to be outputted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for producing a signal for outputting a characteristic of a waveform signal as time-series data as a pattern which can be easily recognized by humans.

[0002]

2. Description of the Related Art A visual monitor device such as an oscilloscope is generally used as a device for facilitating human recognition of characteristics of waveform signals as time-series data.

As a monitor device that uses hearing, a device that outputs a warning sound when a fluctuation signal exceeds a certain level is common, and a device that uses hearing to recognize the fluctuation pattern itself of a waveform signal is known. Not announced.

When humans recognize a waveform signal, they place importance on visual perception and it is difficult to express the waveform with a sound pattern.

As a similar technique, there is a voice recognition technique.
It analyzes the waveform of the voice and expresses it by replacing it with words. It is analyzed using the characteristics of the voice as a premise, which is significantly different from the present technology that handles general waveforms.

Acoustic analysis and noise removal are processes of audible sound, and the waveform itself corresponds to the sound, which is significantly different from the present technology that handles general waveforms.

[0007]

The problem to be solved by the present invention is to convert a waveform signal into a sound pattern which can be easily recognized by humans and to transmit it.

[0008]

In order to achieve the above object, the method according to the first aspect of the present invention creates a signal for outputting a characteristic of a waveform signal as time-series data as a pattern that is easily recognized by humans. Regarding the method, the whole is composed of a basic rhythm pattern detecting means, a local disturbance detecting means and a sound data pattern converting means, and the basic rhythm pattern detecting means analyzes the frequency of a time series signal of the waveform to thereby form a basic frequency constituting a waveform. It has the function of finding the magnitude of the energy of each component and each frequency component, and the local disturbance detection means has the function of extracting waveform data other than the waveform composed of the fundamental frequency component as being based on the local disturbance. The pattern conversion means combines and outputs the basic rhythm pattern and the sound data pattern based on local disturbance. It is characterized in that has a function of converting the sound data.

Thus, the input data is converted into a sound data pattern in which the rhythm pattern sound and other sounds are combined by constructing the basic rhythm pattern detection means, the local disturbance detection means, and the sound data pattern conversion means as a whole. To be able to do.

The basic rhythm pattern detecting means performs frequency analysis on the time-series signal of the waveform to obtain the basic frequency component forming the waveform and the magnitude of energy of each frequency component, and detects this as the basic rhythm of the waveform. To be able to do.

The local disturbance detecting means extracts the waveform data other than the waveform composed of the fundamental frequency component as the one based on the local disturbance, so that the disturbance portion which does not appear as the frequency analysis result is the sound data pattern other than the basic rhythm pattern. It is possible to express as.

The sound data pattern conversion means combines the basic rhythm pattern and the sound data pattern based on the local disturbance and converts it into sound data to be output, so that data necessary for outputting as an audible sound can be obtained.

According to a second aspect of the present invention, there is provided an apparatus for producing a signal for outputting a characteristic of time-series data of a waveform signal as a pattern which can be easily recognized by humans. Section, a local disturbance detection processing section, and a sound data pattern conversion processing section. The apparatus data storage section includes an input waveform data storage section, a basic rhythm pattern detection result storage section, a local disturbance detection result storage section, and output sound data storage section. The basic rhythm pattern detection processing unit has a connection unit for reading data from the input waveform data storage unit and writing data to the basic rhythm pattern detection result storage unit, and has a local disturbance detection process. The section reads the data from the input waveform data storage section and the basic rhythm pattern detection result storage section,
In addition, it has a connection part for writing data to the local disturbance detection result storage part, and the sound data pattern conversion processing part reads data from the basic rhythm pattern detection result storage part and the local disturbance detection processing result storage part, In addition, it is characterized by having a connection part for writing data to the output sound data storage part.

As described above, by configuring the processing unit of the apparatus by the basic rhythm pattern detection processing unit, the local disturbance detection processing unit and the sound data pattern conversion processing unit, the waveform is superimposed on the basic rhythm pattern and the local disturbance sound pattern. It becomes possible to carry out the basic processing for expressing in combination.

By outputting the conversion result from the input data by configuring the data storage unit of the apparatus with the input waveform data storage unit, the basic rhythm pattern detection result storage unit, the local disturbance detection result storage unit and the output sound data parameter storage unit. Up to, it is possible to control the basic data flow in a series of data processing.

The basic rhythm pattern detection processing section has a connection section for reading data from the input waveform data storage section and for writing data to the basic rhythm pattern detection result storage section, thereby detecting the basic rhythm pattern. You can control the input and output of processing.

The local disturbance detection processing section has a connection section for reading data from the input waveform data storage section and the basic rhythm pattern detection result storage section, and for writing data to the local disturbance detection result storage section. The input and output of the local disturbance detection process can be controlled.

The sound data pattern conversion processing unit has a connection unit for reading data from the basic rhythm pattern detection result storage unit and the local disturbance detection processing result storage unit and for writing data to the output sound data storage unit. By having it, the input / output of the sound data pattern conversion processing can be controlled.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an example of a flow chart of a method according to the present invention.

When the processing starts, the waveform data input S
In 1, the waveform data to be converted into the sound data pattern is input.

In frequency analysis S2, frequency analysis of the input waveform data is performed to obtain an energy spectrum.

In the energy spectrum feature extraction S3, the peak frequency, the peak size, and the phase difference are obtained from the energy spectrum obtained in the frequency analysis S2.

In the basic rhythm detection S4, from the data on the peaks obtained in the energy spectrum feature extraction S3, the rhythm pattern carved at the timing of the peaks and troughs of the waveform at each representative frequency is calculated as the number of peak value data. Only ask for minutes.

In the basic rhythm-corresponding waveform calculation S5, the waveforms of the respective representative frequencies are obtained, and these are superposed to obtain the basic rhythm-corresponding waveform.

In the local disturbance component extraction S6, the local disturbance component is extracted by obtaining the difference between the input waveform data and the basic rhythm corresponding waveform at the corresponding times.

In the basic rhythm sound parameter creation S7, sound parameters are created in consideration of the magnitude and phase difference of the amplitude corresponding to the previously detected basic rhythm.

In the local disturbance sound parameter creation S8,
The parameters of the sound data pattern are created according to the peak and amplitude of the waveform of the local disturbance component.

FIG. 2 is an embodiment of a system block diagram of the apparatus of the method according to the invention.

The processing section of the apparatus comprises a basic rhythm pattern detection processing section 1, a local disturbance detection processing section 2 and a sound data pattern conversion processing section 3.

The data storage unit comprises an input waveform data storage unit 4, a basic rhythm pattern detection result storage unit 5, a local disturbance detection result storage unit 6, and an output sound data storage unit 7.

FIG. 3 is an example of waveform data processing according to the present patent.

(A) shows the input waveform data.

(B) shows the superposition result of the waveforms of the representative frequencies obtained as a result of the frequency analysis.

(D1), (D2) and (D3) are
It is a waveform pattern of a representative frequency which is a component of (B).

(C) shows a local disturbance waveform.

FIG. 4 shows an example of creating sound data according to this patent.

At this time, the basic rhythm pattern is (E
1), (E2) and (E3). These are the waveform patterns (D1) and (D1) of the representative frequencies shown in FIG.
2) and (D3).

The local disturbing sound pattern is shown in (F).
This corresponds to the local disturbance waveform (C) shown in FIG.

[0039]

As described above, according to the present invention, it is possible to accurately capture the characteristics of a waveform signal and convert the waveform signal into a sound data pattern.

[0040]

[Brief description of drawings]

1 is a flow chart of a method according to the present invention.
(Example 1)

FIG. 2 is a system block diagram according to the present invention.
(Example 2)

FIG. 3 is a processing example of waveform data according to the present invention.

FIG. 4 is an example of creating sound data according to the present invention.

[Explanation of symbols]

1: Basic rhythm pattern detection processing unit 2: Local disturbance detection processing unit 3: Sound data pattern conversion processing unit 4: Input waveform storage 5: Basic rhythm pattern detection result storage unit 6: Local disturbance detection result storage unit 7: Output sound data storage unit

Claims (2)

[Claims] 1. A method for creating a signal for outputting a characteristic of a waveform signal as time-series data as a sound pattern that is easily recognized by humans, and a basic rhythm pattern detecting means, a local disturbance detecting means, and a sound data pattern. The basic rhythm pattern detecting means, which is composed of a converting means, has a function of obtaining a basic frequency component forming a waveform and the magnitude of energy of each frequency component by frequency-analyzing a time-series signal of the waveform. The detection means has a function of extracting waveform data other than the waveform composed of the fundamental frequency components as those based on the local disturbance, and the sound data pattern conversion means combines the basic rhythm pattern and the sound data pattern based on the local disturbance. , A method having a function of converting to output sound data. 2. An apparatus for producing a signal for outputting a characteristic of a waveform signal as time-series data as a pattern that is easily recognized by humans, the processing section of the apparatus including a basic rhythm pattern detection processing section and a local disturbance detection processing. And a sound data pattern conversion processing unit, and the data storage unit of the device is composed of an input waveform data storage unit, a basic rhythm pattern detection result storage unit, a local disturbance detection result storage unit, and an output sound data storage unit. The rhythm pattern detection processing unit
It has a connection part for reading data from the input waveform data storage part and writing data to the basic rhythm pattern detection result storage part.The local disturbance detection processing part has an input waveform data storage part and a basic rhythm pattern detection part. It has a connection part for reading data from the result storage part and writing data to the local disturbance detection result storage part, and the sound data pattern conversion processing part has a basic rhythm pattern detection result storage part and a local disturbance detection process. An apparatus having a connection unit for reading data from a result storage unit and writing data to an output sound data storage unit.