CN103413559A - Voice frequency identifying and correcting system - Google Patents

Abstract

The invention discloses a voice frequency identifying and correcting system. The voice frequency identifying and correcting system is used for identifying whether a player plays correctly. The voice frequency identifying and correcting system comprises a first work unit, a second work unit and an analysis module, wherein the first work unit is used for collecting voice signals of the player during playing, each voice frequency of the voice signals is processed to obtain the corresponding frequency; the second work unit stores midi files containing repertoires, and analyzes each note in the repertoires to obtain the corresponding standard frequency; the analysis module is used for determining whether the voice frequency obtained by the first work unit and the voice frequency obtained by the second work unit are equal in a comparing mode. During comparison, the value of the standard frequency reflects which note the frequency corresponds to, and time of the standard frequency reflects how many meters the note should show. According to the voice frequency identifying and correcting system, the player can timely know which note should be played in one time quantum, how many meters should be played, whether actual playing has errors, and where the errors occur. A specific improvement to next playing can be conducted, and therefore learning efficiency is greatly improved.

Description

Audio identification and correcting system

Technical field

The present invention, about a kind of aid of music learning, refers in particular to a kind of audio identification and correcting system.

Background technology

Music is to take sound to be a kind of art form of expression means, the moulding of music image, and the organized sound of take completes as material.Therefore, as the art that literature is language, music is the art of sound.This is one of essential characteristic of act of music.Continuous variation along with the epoch, emerged increasing music-lover, but, these music-lovers are in the process of learning music, for example learn piano or learn other musical instruments, due to training or the some other reason of not accepting specialty, they are difficult to discover one's mistakes in time in study, and corrected, so just caused the problem that learning efficiency is low.

Summary of the invention

Because the problems referred to above the object of the invention is to, provide a kind of student that can facilitate those study pianos or learn other musical instruments in the process of study, whether accurately playing of oneself can be judged, and the aid of correcting in time can be carried out.

For this reason, the invention provides a kind of audio identification and correcting system, whether correct be used to the performance of identifying the player, comprising:

One first working cell, the voice signal while playing be used to gathering the player, and each audio frequency in this voice signal is processed and obtained corresponding frequency;

One second working cell, preserve playing music purpose midi file, can obtain playing according to the midi file music score of the standard that song is corresponding, and each note parsing that will play in song obtains corresponding standard frequency;

Whether one analysis module is identical with the frequency of the resulting two groups of audio frequency in the second working cell be used to comparing the first working cell.

Further improvement of the present invention is,

Described the first working cell comprises:

One sound collection module, the voice signal while playing be used to gathering the player;

One processing module, convert digital signal to for the voice signal that will collect, and therefrom process and obtain the corresponding frequency of each audio frequency;

Described the second working cell comprises:

The bent storehouse of one MIDI, preserve playing music purpose midi file;

One parsing module, for parsing standard frequency corresponding to this each note of performance song.

The present invention also provides a kind of method of operating of using described audio identification and correcting system, comprises the following steps:

1) player, before performance, first selects the song that will play in the bent storehouse of MIDI, strikes up;

2) the sound collection module of the first working cell starts to gather the voice signal of performance, and therefrom processes and obtain the corresponding frequency of each audio frequency by processing module;

3) parsing module of the second working cell while, or in advance from the bent storehouse of MIDI, resolving and obtain the standard frequency that this song is corresponding.

4) whether analysis module to compare this two class frequency identical, and comparison result is fed back to the player.

During comparison, the numerical values recited of standard frequency reflected this frequency corresponding be which note, the time length of standard frequency has reflected this note should be played how many beats.The player is by audio identification of the present invention and correcting system, and it is wrong whether the note that just can know which time period is played, and exercise next time just can improve targetedly, thereby has greatly improved learning efficiency.

The accompanying drawing explanation

Fig. 1 is that the circuit of audio identification of the present invention and correcting system is controlled schematic diagram.

Embodiment

In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.

Cooperation is referring to shown in Figure 1, and whether audio identification of the present invention and correcting system be correct be used to the performance of identifying the player, comprises one first working cell 10, one second working cell 20 and an analysis module 30, wherein,

The first working cell 10 comprises:

One sound collection module 101, the voice signal while playing be used to gathering the player;

One processing module 102, convert digital signal to for the voice signal that will collect, then by the FFT(Fast Fourier Transform (FFT)) obtain except the corresponding frequency of each audio frequency in voice signal after making an uproar from digital signal, processing.

The second working cell 20 comprises:

The one bent storehouse 201 of MIDI, local or preserve beyond the clouds a large amount of midi files at PAD;

One parsing module 202, parse standard frequency corresponding to each note in this song for the song by the bent storehouse 201 of MIDI according to the standard note frequency table of comparisons.Wherein, the selected parts of the standard note frequency table of comparisons are as shown in table 1 below.

Note	Frequency
		c	130.8Hz
#c	138.6Hz
		d	146.8Hz
#d	155.6Hz

Table 1

Whether described analysis module 30 is identical with the frequency of the second resulting two groups of audio frequency in working cell 20 be used to comparing the first working cell 10.

The workflow of this audio identification and correcting system comprises the following steps:

1) player, before performance, first selects the song that will play in the bent storehouse 201 of MIDI, strikes up;

2) the sound collection module 101 of the first working cell 10 starts to gather the voice signal of performance, processes and obtains except the corresponding frequency of each audio frequency in voice signal after making an uproar by processing module 102.The parsing module 202 of the second working cell 20 is from resolving and obtain the standard frequency that this song is corresponding the bent storehouse 201 of MIDI simultaneously.

3) whether analysis module 30 these two class frequencys of comparison are identical, comparison result fed back to the player in user interface.Can be according to the midi file, depict its correspondence music score.Performance to mistake can be in the music score interface distinguishing showing.

During comparison, the numerical values recited of standard frequency reflected this frequency corresponding be which note, the time length of standard frequency has reflected this note should be played how many beats.The player is by audio identification of the present invention and correcting system, just can know in time which note which should play time period, and how long each note should play beat, and whether actual the performance make mistakes, and where made mistakes.Play and just can improve targetedly next time, greatly improved learning efficiency.

The above is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art, in the scope that does not break away from technical solution of the present invention, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.

Claims (3)

1. whether an audio identification and correcting system, correct be used to the performance of identifying the player, it is characterized in that comprising:

One first working cell, the voice signal while playing be used to gathering the player, and each audio frequency in this voice signal is processed and obtained corresponding frequency;

One second working cell, preserve playing music purpose midi file, and each note parsing that will play in song obtains corresponding standard frequency;

Whether one analysis module is identical with the frequency of the resulting two groups of audio frequency in the second working cell be used to comparing the first working cell.

2. audio identification as claimed in claim 1 and correcting system, is characterized in that,

Described the first working cell comprises:

One sound collection module, the voice signal while playing be used to gathering the player;

One processing module, convert digital signal to for the voice signal that will collect, and therefrom process and obtain the corresponding frequency of each audio frequency;

Described the second working cell comprises:

The bent storehouse of one MIDI, preserve playing music purpose midi file;

One parsing module, for parsing standard frequency corresponding to this each note of performance song.

3. method of operating of using audio identification as claimed in claim 2 and correcting system is characterized in that comprising the following steps:

1) player, before performance, first selects the song that will play in the bent storehouse of MIDI, strikes up;

2) the sound collection module of the first working cell starts to gather the voice signal of performance, and therefrom processes and obtain the corresponding frequency of each audio frequency by processing module;

3) parsing module of the second working cell obtains from parsing the bent storehouse of MIDI the standard frequency that this song is corresponding simultaneously.

4) whether analysis module to compare this two class frequency identical, and comparison result is fed back to the player.

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