CN109817189B - Audio signal adjusting method, sound effect adjusting device and system - Google Patents
Audio signal adjusting method, sound effect adjusting device and system Download PDFInfo
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- CN109817189B CN109817189B CN201811641498.4A CN201811641498A CN109817189B CN 109817189 B CN109817189 B CN 109817189B CN 201811641498 A CN201811641498 A CN 201811641498A CN 109817189 B CN109817189 B CN 109817189B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses an audio signal adjusting method, which is applied to sound effect equipment and is used for receiving an audio signal input by a musical instrument and adjusting the audio signal, wherein the audio signal is a chord audio signal, and the method comprises the following steps: analyzing a plurality of paths of single-string audio signals from the audio signals; detecting the frequency of each single-string audio signal; judging whether the frequency of each single-string audio signal is lower than a preset frequency; reducing the frequency of each path of single-string audio signals lower than the preset frequency according to a preset frequency regulation rule; and mixing each path of single-string audio signals which are not lower than the preset frequency with each path of single-string audio signals with the reduced frequency directly and outputting the mixed signals. The invention also discloses sound effect adjusting equipment and a sound effect adjusting system. The present disclosure enables a musical instrument player to utilize an audio signal that can utilize frequencies below a preset frequency to obtain an extended application of chords.
Description
Technical Field
The present invention relates to the field of music devices, and in particular, to a method for adjusting an audio signal, an audio effect adjusting device, and a system.
Background
At present, octaves are often used in the playing process of musical instruments to change the pitch of the played music, such as raising one octave or lowering one octave, so as to obtain different playing sound effects. Even with a guitar, bass sound effects can be achieved. However, in the playing process, various different mixing effects are needed, the existing octave effect device can only change the multiple pitches of the input chord at the same time, the effect is single, and better music effect cannot be obtained.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the purposes of the invention is to provide a method for differently adjusting multiple audio signals of a chord.
A method for adjusting an audio signal, applied to an audio device, for receiving an audio signal inputted by a musical instrument and adjusting the audio signal, the audio signal being a sum chord audio signal, the method comprising:
analyzing a plurality of paths of single-string audio signals from the audio signals;
detecting the frequency of each single-string audio signal;
judging whether the frequency of each single-string audio signal is lower than a preset frequency;
reducing the frequency of each path of single-string audio signals lower than the preset frequency according to a preset frequency regulation rule;
and mixing each path of single-string audio signals which are not lower than the preset frequency with each path of single-string audio signals with the reduced frequency directly and outputting the mixed signals.
Further, the method comprises the steps of. Characterized in that, before outputting the audio signal, the method further comprises,
and adjusting the gain of each path of single-string audio signal according to a preset gain adjustment rule.
Further, the preset frequency adjustment rule is to reduce the frequency of the audio signal by half.
Further, the preset frequency is any one value of 110 Hz-207.7 Hz.
A method of conditioning an audio signal for use in a musical instrument system, the musical instrument system including a musical instrument and a sound effect device, the method comprising:
the musical instrument outputs audio signals to the sound effect equipment, wherein the audio signals are chord audio signals;
the sound effect equipment detects the frequency of each single-string audio signal;
the sound effect equipment judges whether the frequency of each single-string audio signal is lower than a preset frequency;
the sound effect equipment reduces the frequency of each path of single-string audio signals lower than the preset frequency according to a preset frequency adjusting rule;
and the sound effect equipment directly mixes each path of single-string audio signals which are not lower than the preset frequency with each path of single-string audio signals with the reduced frequency and outputs the mixed signals.
Further, characterized in that, before outputting the audio signal, the method further comprises,
the sound effect equipment adjusts the gain of each single-string audio signal according to a preset gain adjustment rule.
Further, the preset frequency adjustment rule is to reduce the frequency of the audio signal by half.
Further, the preset frequency is any one value of 110 Hz-207.7 Hz.
An audio conditioning apparatus for electrical connection with a musical instrument to process an input audio signal of the musical instrument, the audio conditioning apparatus comprising a memory, a processor and a program stored in the memory, the program being configured to be executed by the processor, the processor executing the program to implement a method of conditioning an audio signal as claimed in any one of the preceding claims.
An audio conditioning system comprising a musical instrument for producing an audio signal that is a chord audio signal and an audio conditioning apparatus comprising a memory, a processor and a program stored in the memory, the processor implementing a conditioning method of any of the above-described audio signals when executing the program.
Compared with the prior art, the invention has the beneficial effects that: a method for adjusting audio signals is provided, which can simultaneously make different audio signal adjustments according to the frequencies of multiple audio signals when chord performance is performed. The application of the musical instrument player to chord extension by utilizing root sounds is satisfied.
Drawings
FIG. 1 is a flowchart of a first embodiment of a method for adjusting an audio signal according to the present invention;
FIG. 2 is a flowchart of a second embodiment of a method for adjusting an audio signal according to the present invention;
FIG. 3 is a flowchart of a third embodiment of a method for adjusting an audio signal according to the present invention;
FIG. 4 is a flowchart of a fourth embodiment of a method for adjusting an audio signal according to the present invention;
FIG. 5 is a schematic diagram of a sound effect adjusting apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an audio conditioning system according to an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
The embodiment of the invention provides an audio signal adjusting method which is mainly applied to sound effect equipment, when a musical instrument performs chord playing, multipath audio signals are generated, frequency adjustment of the audio signals is performed on the generated multipath audio signals, frequency reduction processing is performed on the audio signals with the frequency lower than a preset frequency, and new audio signals are obtained after mixing output, so that the effect of played music is more diversified.
Referring to fig. 1, a first embodiment of the present invention provides a flowchart of a method for adjusting an audio signal, the method including the following steps,
step S101: and analyzing a plurality of paths of single-string audio signals from the audio signals:
the audio signal is an information carrier that produces regular changes in the frequency and amplitude of sound as the instrument is played. A multi-channel single-string audio signal is obtained from the audio signal.
Step S103: the frequency of each single-string audio signal is detected.
Step S105: and judging whether the frequency of each single-string audio signal is lower than a preset frequency.
And judging whether the frequency of each single-string audio signal is lower than the preset frequency by comparing the frequency with the preset frequency. In this embodiment, the preset frequency is any one of 110Hz to 207.7 Hz.
Step S107: and reducing the frequency of each path of single-string audio signals lower than the preset frequency according to a preset frequency regulation rule.
The preset frequency regulation rule is to reduce the frequency of the single-string audio signal, and the frequency of the audio signal to be processed can be reduced to one third and one half of the original frequency. In this embodiment, the preset frequency adjustment rule is to reduce the frequency of the audio signal to be processed to one half of the original frequency, and the sound effect is to reduce the input sound by one octave at the original pitch.
Step S109: and mixing each path of single-string audio signals which are not lower than the preset frequency with each path of single-string audio signals with the reduced frequency directly and outputting the mixed signals.
And if the single-string audio signal with the frequency not lower than the preset frequency is detected, the frequency of the single-string audio signal is not changed, and the audio signal is directly mixed with the single-string audio signal with the reduced frequency to obtain a new chord audio signal and then output.
In the present embodiment, through the chord performance of the music, it is possible to judge the frequency level of each of the audio signals of the multiple audio signals of the chord and to perform the frequency lowering process on the audio signals lower than the preset frequency. And finally, outputting the multipath audio signals simultaneously to obtain a new playing effect.
Fig. 2 is a flowchart of a method for adjusting an audio signal according to a second embodiment of the present invention. The mixing method of the second embodiment is different from the mixing method of the first embodiment in that, before outputting the audio signal, the method further includes:
step S201, the gain of each single-string audio signal is adjusted according to a preset gain adjustment rule.
According to the frequency of each detected single-string audio signal, the gain of the single-string audio signal is respectively adjusted according to a preset adjusting rule so as to adjust the signal intensity of the input single-string audio signal, namely the quantity of the input signal. The degree of firmness of the final output single-string audio signal determined by the gain setting can also be set by changing the distortion degree of the tone. The single-string audio signals below the preset frequency and not below the preset frequency can be adjusted differently at the same time.
In the above embodiment, before the method for adjusting an audio signal is used, the loudness of the output single-string audio signal may be set by the physical key, so that the single-string audio signal with the frequency lower than the preset frequency and the single-string audio signal with the frequency not lower than the preset frequency may be adjusted respectively.
Referring to fig. 3, fig. 3 is a flowchart illustrating a method for adjusting an audio signal according to a third embodiment of the present invention. A third embodiment provides a method of adjusting an audio signal, the method being applied to a musical instrument system including a musical instrument device and a sound effect device, the method comprising:
step S301: the musical instrument outputs audio signals to the sound effect device, the audio signals being chord audio signals.
And when the musical instrument is used for chord playing by starting an audio signal mode of the sound effect device, the sound effect device receives the chord audio signal to perform complex tone recognition, so that a multi-channel single-string audio signal is obtained. Specifically, complex voice recognition is recognized by the DSP in the sound effect signal.
Step S303: the sound effect device detects the frequency of each single-string audio signal.
The sound effect device detects the frequency value of each single-string audio signal.
Step S305: the sound effect device judges whether the frequency of each single-string audio signal is lower than a preset frequency.
The audio device judges whether the frequency of each single-string audio signal is lower than the preset frequency by comparing the frequency with the preset frequency. In this embodiment, the preset frequency is any one of 110Hz to 207.7 Hz.
Step S307: and the sound effect equipment reduces the frequency of each path of single-string audio signals lower than the preset frequency according to a preset frequency regulation rule.
The preset frequency adjustment rule is to reduce the frequency adjustment of the audio signal inputted from the musical instrument so that the pitch of the audio signal processed by the sound effect device is reduced by a preset frequency. If one needs to reduce the pitch by one octave, the frequency needs to be adjusted to one half of the original frequency.
Step S309: and the sound effect equipment directly mixes each path of single-string audio signals which are not lower than the preset frequency with each path of single-string audio signals with the reduced frequency and outputs the mixed signals.
And if the single-string audio signal with the preset frequency not lower than the preset frequency is detected by the sound effect equipment, the frequency of the single-string audio signal is not changed, and the audio signal is directly mixed with the single-string audio signal with the reduced frequency to obtain a new chord audio signal and then output.
Referring to fig. 4, fig. 4 is a flowchart illustrating a method for adjusting an audio signal according to a fourth embodiment of the present invention. A fourth embodiment provides a method for adjusting an audio signal, which is applied to a musical instrument system, and after determining whether a frequency of each audio signal is lower than the preset frequency, the method includes:
step S401: the sound effect equipment adjusts the gain of each single-string audio signal according to a preset gain adjustment rule.
According to the frequency of each detected single-string audio signal, the gain of the single-string audio signal is respectively adjusted according to a preset adjusting rule so as to adjust the signal intensity of the input single-string audio signal, namely the quantity of the input signal. The degree of firmness of the final output single-string audio signal determined by the gain setting can also be set by changing the distortion degree of the tone. The single-string audio signals below the preset frequency and not below the preset frequency can be adjusted differently at the same time.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an audio adjusting apparatus. The embodiment of the present invention provides an audio conditioning apparatus 300 for electrically connecting with a musical instrument to process an input audio signal of the musical instrument, the audio conditioning apparatus 300 including a memory 301, a processor 302, and a program stored in the memory 301, the program being configured to be executed by the processor 302, the processor 302 implementing the above-described audio signal conditioning method when executing the program.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an audio adjusting system. The sound effect adjusting system provided by the embodiment of the invention comprises a musical instrument 400 and a sound effect adjusting device 500, wherein the musical instrument is used for generating audio signals, the generated audio signals are chord audio signals, the sound effect adjusting device 500 comprises a memory 501, a processor 502 and a program stored in the memory 501, and the processor 502 executes the program to realize the adjusting method of the audio signals.
The sound effect adjusting device, the sound effect adjusting system and the method in the foregoing embodiments are based on two aspects under the same inventive concept, and the detailed description of the implementation process of the method has been described above, so those skilled in the art can clearly understand the implementation process of the electronic device in the foregoing embodiments according to the foregoing description, and for brevity of description, the description will not be repeated here.
The above embodiments provide an audio signal adjusting method, an audio effect adjusting device, and an audio effect adjusting system, which can perform frequency adjustment and loudness adjustment on multiple single-string audio signals that form a chord audio signal through a preset frequency, and perform frequency adjustment on a single-string audio signal that is lower than the preset frequency and mix with a single-string audio signal that is not lower than the preset frequency, so that a player of a musical instrument can obtain an extended application of the chord by using the audio signal that is lower than the preset frequency.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.
Claims (10)
1. A method for adjusting an audio signal, applied to an audio device, for receiving an audio signal inputted by a musical instrument and adjusting the audio signal, the audio signal being a chord audio signal, the method comprising:
analyzing a plurality of paths of single-string audio signals from the audio signals;
detecting the frequency of each single-string audio signal;
judging whether the frequency of each single-string audio signal is lower than a preset frequency;
reducing the frequency of each path of single-string audio signals lower than the preset frequency according to a preset frequency regulation rule;
and mixing each path of single-string audio signals which are not lower than the preset frequency with each path of single-string audio signals with the reduced frequency directly and outputting the mixed signals.
2. A method of conditioning an audio signal according to claim 1, wherein prior to outputting the audio signal, the method further comprises,
and adjusting the gain of each path of single-string audio signal according to a preset gain adjustment rule.
3. The method of claim 1, wherein the predetermined frequency adjustment rule is to reduce the frequency of the audio signal by half.
4. The method of adjusting an audio signal according to claim 1, wherein the preset frequency is any one of 110Hz to 207.7 Hz.
5. A method of conditioning an audio signal for use in a musical instrument system, the musical instrument system including a musical instrument and a sound effect device, the method comprising:
the musical instrument outputs audio signals to the sound effect equipment, wherein the audio signals are chord audio signals;
the sound effect equipment detects the frequency of each single-string audio signal;
the sound effect equipment judges whether the frequency of each single-string audio signal is lower than a preset frequency;
the sound effect equipment reduces the frequency of each path of single-string audio signals lower than the preset frequency according to a preset frequency adjusting rule;
and the sound effect equipment directly mixes each path of single-string audio signals which are not lower than the preset frequency with each path of single-string audio signals with the reduced frequency and outputs the mixed signals.
6. The method of conditioning an audio signal according to claim 5, wherein prior to outputting the audio signal, the method further comprises,
the sound effect equipment adjusts the gain of each single-string audio signal according to a preset gain adjustment rule.
7. The method of claim 5, wherein the predetermined frequency adjustment rule is to reduce the frequency of the audio signal by half.
8. The method of adjusting an audio signal according to claim 5, wherein the predetermined frequency is any one of 110Hz to 207.7 Hz.
9. An audio conditioning apparatus for electrical connection with a musical instrument for processing an input audio signal of the musical instrument, the audio conditioning apparatus comprising a memory, a processor, and a program stored in the memory, the program configured to be executed by the processor, the processor executing the program to implement the method of conditioning an audio signal of any of claims 1-4.
10. An audio conditioning system comprising a musical instrument for producing an audio signal that is a chord audio signal and an audio conditioning apparatus comprising a memory, a processor and a program stored in the memory, the processor implementing the method of conditioning an audio signal of any of claims 1-4 when executing the program.
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