TWM468757U - Musical sound processing apparatus - Google Patents

Description

Music processing device

This creation relates to the design of an audio processing device, and more particularly to an audio processing device capable of producing sound effects and reducing the effects of noise.

An audio processing device (commonly known as an effect device) is an electronic device that can modify the sound of an electronic musical instrument or audio, and is commonly used in electric guitars, electric bass or keyboard/mixers/karaoke/DJ mixing devices. The effects are usually connected between the audio lines of the instrument, and the instrument's tone can be adjusted by changing the effect parameter settings, using them individually or by making different combinations. They can be used in live performances or for post production.

Generally, the effect device receives the analog audio from the instrument and converts it into digital audio. The digital processor in the effect device changes the frequency, amplitude, delay time and other parameters of the original digital audio according to the externally input setting value, and cooperates with the filtering. The device processes the digital audio by compression, clipping, etc., so that the tone of the instrument can be varied.

However, when the effector is operated, if the internal noise of the circuit is caused by electrostatic discharge, external electromagnetic signal interference, or poor power quality, the glitch noise is generated when the glitch noise is mixed in the digital processor for processing the digital audio. The digital processor erroneously processes the digital audio, making it difficult for the user to use the effect to obtain the desired instrument sound.

Therefore, the purpose of the present invention is to provide a musical tone processing device capable of reducing the influence of noise to solve the above-mentioned problems in the prior art. question.

The technical means for solving the problem of the prior art is a music processing device, comprising: an audio conversion mechanism, the audio conversion mechanism receives the analog audio through a first path and converts it into digital audio and outputs the second path. Or receiving the digital audio via the second path and converting to analog audio for output by the first path, and an audio processing mechanism is connected to the audio conversion mechanism in the second path, the audio processing mechanism has a timbre parameter group, and The second path receives the digital audio from the audio conversion mechanism, and a control mechanism is connected to the audio conversion mechanism and the audio processing mechanism. The control mechanism controls the audio conversion mechanism and the audio processing mechanism with a control command group, and correspondingly controls the first path. And a switching state of the second path, wherein the audio conversion mechanism processes the digital audio according to the timbre parameter group when the first path and the second path are closed by the control mechanism.

In an embodiment of the present invention, a voltage conversion mechanism is further included, and the audio conversion mechanism and the control mechanism are connected to provide an operating voltage suitable for the audio conversion mechanism and the control mechanism.

In an embodiment of the present invention, a temporary storage unit is further connected to the control unit, and the temporary storage unit stores the control instruction group of the control unit.

In an embodiment of the present invention, a timing generating mechanism is further included, and the timing generating mechanism generates and transmits a timing signal to the audio processing mechanism and the control mechanism for receiving.

In an embodiment of the present creation, the format of the digital audio is selected from one of an I2S format, a left-justified, and a right-justified.

In an embodiment of the present invention, the audio processing mechanism further includes a storage unit, and the tone color parameter group is stored in the storage unit, and the storage list is And store the digital audio received from the audio conversion mechanism.

In an embodiment of the present invention, an RC filter circuit is further included, and is connected to the audio conversion mechanism to filter out noise of the digital audio or analog audio.

In an embodiment of the present invention, an external input mechanism is further connected to the control mechanism, and the external input mechanism transmits a parameter signal to the control mechanism, and the control mechanism further transmits the control command group corresponding to the parameter signal to adjust the tone color parameter of the audio processing mechanism. group.

In an embodiment of the present invention, an external transmission interface is coupled to the audio conversion mechanism, and the external transmission interface has one less audio input aperture and one audio output aperture.

According to the technical means adopted by the present invention, before the audio processing mechanism processes the digital audio, the first path and the second path can be closed by the control mechanism to reduce the input path, thereby reducing the distortion of the processing by the audio processing mechanism. The influence of the wave noise makes it possible to improve the quality of the tone.

The specific embodiments of the present invention will be further described by the following examples and accompanying drawings.

Please refer to FIG. 1 to FIG. 3 . FIG. 1 is a perspective view showing a musical tone processing device according to one embodiment of the present invention, and FIG. 2 is a block diagram showing a musical tone processing device according to an embodiment of the present invention. The figure shows a flow chart of the operation of the tone processing device according to the embodiment of the present invention.

As shown in the figure, the tone processing apparatus 100 according to an embodiment of the present invention mainly includes an external transmission interface 1 and an audio conversion mechanism 2. An audio processing unit 3, a control unit 4, a timing generating mechanism 5, and an external input unit 6. The tone processing device 100 receives the analog signal SA1 from an instrument G (for example, an electric guitar) and processes it by the audio processing unit 3, and then outputs a processed analog signal SA2 to a playback device S (for example, an audio).

The external transmission interface 1 has an audio input hole 11 and an audio output hole 12, and is connected to the first path P1 with the audio conversion mechanism 2. The audio input hole 11 is connected to the musical instrument G by an audio line, receives the analog signal SA1 from the musical instrument G, and transmits the input to the audio conversion mechanism 2 via the first path P1. The audio output aperture 12 is coupled to the playback device S by another audio line for outputting the processed analog signal SA2 to the playback device S for playback.

The audio conversion mechanism 2 is for converting audio into an analog or digital format, which is connected to the audio processing unit 3 by a second path P2. In this embodiment, the audio conversion mechanism 2 is an ADC/DAC circuit. The audio conversion mechanism 2 can convert the analog audio SA1 input through the first path P1 into the digital audio SD1 and output it from the second path P2, or convert the digital audio SD2 input through the second path P2 into the analog audio SA2. The first path P1 is output.

The audio processing mechanism 3 includes a storage unit 31 and has a timbre parameter group. The audio processing unit 3 receives the digital audio SD1 input via the second path P2, and correspondingly processes the digital audio SD1 according to the timbre parameter group and processes it into the digital audio SD2. In detail, the tone parameter group includes a plurality of tone parameters, and each tone parameter is a specific tone setting. The audio processing unit 3 sets parameters such as a low-pass frequency, a high-pass frequency, and a delay time according to the timbre parameters, and can process the digital audio SD1 to have different modes by using a band pass filter, early reflection, or audio superposition. Spatial or timbre digital Audio SD2. The storage unit 31 stores therein the tone parameter group or the digital audio SD1 to be processed, and the user can set the desired tone parameters by using the computer, the programming device, or the external input mechanism 6, and store the parameters in the storage unit 31.

The control unit 4 is a Micro Controller Unit (MCU) and includes a temporary storage unit 41. The control unit 4 is connected to the audio conversion unit 2 and the audio processing unit 3. The control unit 4 controls the audio conversion unit 2 and the audio processing unit 3 in a control command group SC. In detail, the control unit 4 can control the conversion format of the digital audio SD1, SD2 of the audio conversion mechanism 2 to one of the I2S format, the left-justified or the right-justified by the control command group SC. And controlling the audio processing mechanism 3 to select different tone parameters or change the settings of the tone parameters. Further, the control unit 4 can control the switching states of the first path P1 and the second path P2 in accordance with the control command group.

In general, the control mechanism 4 itself has a buffer memory. However, if the number of instructions is too large, the buffer memory may be insufficient to affect the processing efficiency of the control mechanism 4. Therefore, in the present embodiment, the temporary storage unit 41 is provided in connection with the control mechanism 4. The temporary storage unit 41 is an Erasable Programmable Read Only Memory (EPROM). The user can first burn the required control command group SC into the temporary storage unit 41 for use. When the control command group SC is taken out from the temporary storage unit 41, even if the power is turned off, the control command group SC is stored in the temporary storage unit 41, making it more efficient for the control unit 4 to access the control command group SC in a large amount.

The timing generating mechanism 5 is an oscillator, connected to the audio processing unit 3 and the control unit 4, and the timing generating unit 5 can generate and transmit a timing signal CK to the audio processing unit 3 and the control unit. Construct CK. In this way, the audio processing unit 3 and the control unit 4 can perform digital processing according to the timing without synchronization errors.

The external input mechanism 6 is coupled to the control mechanism 4 and includes a plurality of sets of adjustment knobs 61, 62 and a plurality of control buttons 63, 64, 65. The user can generate a parameter signal SP to be transmitted to the control mechanism 4 by controlling the external input mechanism 6. The adjustment knobs 61 and 62 can respectively control the setting values of the tone color parameters, and the control buttons 63, 64, and 65 are respectively used to set a beat (Mout) or a power switch (Power).

Preferably, the control mechanism 4 can be connected to a seven-segment display 7 in order to facilitate the user to confirm the currently adjusted tone name and adjustment range. Of course, other devices can also be connected to assist the confirmation, such as using a liquid crystal screen with better resolution or simply confirming the brightness of the LED light.

Please refer to Figure 3. In use, first, the tone processing device 100 first initializes (step S100). The audio processing unit 3 clears the digital audio temporarily stored in the storage unit 31 during the previous use, and the audio conversion mechanism 2 clears the audio format set in the previous use.

Next, the digital audio conversion format of the audio conversion mechanism 2 is set and muted (step S200). The format of the digital audio can be selected from one of the I2S format, Left-justified, and Right-justified according to the user's needs. If the user needs to input the voice parameters, you need to input the mute control signal in this step.

Next, the beat at the time of use is set (step S300). The user presses the control button 63 several times at a certain frequency to transmit the parameter command SP, and after receiving the control unit 4, the seven-segment display 7 blinks to display the beat to assist the user in practicing the musical instrument G.

In order to prevent the audio processing unit 3 from having a noise input when processing the digital audio SC1, the control unit 4 needs to confirm whether the first path has been taken. P1 and the second path P2 are turned off to enter the silent mode (step S400). If the user does not input the mute control signal, the process returns to step S200. Preferably, in order to make the mute effect better, the control mechanism 4 first mutes the audio conversion mechanism 2 to turn off the first path P1, and then mutes the audio processing mechanism 3 to turn off the second path P2.

Next, the external input unit 6 is controlled to send the parameter signal SP to the control unit 4 (step S500). After receiving the parameter signal SP, the control unit 4 transmits the control signal SC to the audio processing unit 3.

Finally, the audio processing unit 3 performs tone color control based on the control signal SC (step S600). The audio processing unit 3 selects one of the timbre parameters from the timbre parameter group according to the control signal SC, and processes the digital audio SD1 into digital audio SD2 having different timbres. After the digital audio SD2 is output, it is converted into the analog audio SA2 by the audio conversion mechanism 2 and output to the playback device S.

Preferably, the tone processing device 100 further includes a voltage conversion mechanism 8 connected to the audio conversion mechanism 2, the audio processing mechanism 3, the control mechanism 4, the timing generation mechanism 5, and the seven-segment display 7, and the voltage conversion mechanism 8 can externally The voltage is converted to a suitable operating voltage for supply to these mechanisms, for example, operating voltage V1 to seven-segment display 7 and timing generating mechanism 5, and operating voltage V2 to audio processing mechanism 3.

Preferably, an RC filter circuit 9 can be disposed between the external transmission interface 1 and the audio conversion mechanism 2. The noise can be filtered by the RC filter circuit 9 before the output or input to further reduce the noise interference that the analog audio SA1 from the external input or the analog audio SA2 output from the audio conversion mechanism 2 may be subjected to to ensure the analogy. The signal quality of audio SA1 and analog audio SA2. Of course, the RC filter circuit 9 can also be disposed between the audio conversion mechanism 2 and the audio processing mechanism 3 to filter out the digits. The audio of SD1 and digital audio SD2, the actual needs.

Through the above configuration, before the audio processing unit 3 processes the digital audio SD1, the control unit 4 turns off the first path P1 and the second path P2 to reduce the noise input path, thereby reducing the noise processing of the glitch noise. The impact of the organization's processing, so that it improves the quality of the processing sound.

It can be seen from the above embodiments that the music processing device provided by the present invention has industrial use value, so the original operation has been in conformity with the requirements of the patent. However, the above description is only for the preferred embodiment of the present invention, and those skilled in the art may make other improvements according to the above description, but these changes still belong to the creative spirit of the creation and the following definitions. In the scope of patents.

100‧‧‧tone processing device

1‧‧‧External transmission interface

11‧‧‧ audio input hole

12‧‧‧ audio output hole

2‧‧‧Audio conversion agency

3‧‧‧Audio processing agency

31‧‧‧ storage unit

4‧‧‧Control agency

41‧‧‧Scratch unit

5‧‧‧Time generating mechanism

6‧‧‧ external input mechanism

7‧‧‧Seven-segment display

8‧‧‧Voltage conversion mechanism

9‧‧‧RC filter circuit

61, 62‧‧‧ adjustment knob

63, 64, 65‧‧‧ control buttons

CK‧‧‧ timing signal

G‧‧‧ musical instruments

S‧‧‧ playback device

SA1, SA2‧‧‧ analog signal

SC‧‧‧Control signal

SD1, SD2‧‧‧ digital signal

SP‧‧‧ parameter signal

P1‧‧‧First path

P2‧‧‧ second path

V1, V2‧‧‧ working voltage

1 is a perspective view showing a tone processing device implemented in accordance with one of the present creations; FIG. 2 is a block diagram showing a tone processing device according to an embodiment of the present creation; and FIG. 3 is a view showing an embodiment according to the present creation. Operation flow chart of the tone processing device.

100‧‧‧tone processing device

1‧‧‧External transmission interface

11‧‧‧ audio input hole

12‧‧‧ audio output hole

2‧‧‧Audio conversion agency

3‧‧‧Audio processing agency

31‧‧‧ storage unit

4‧‧‧Control agency

41‧‧‧Scratch unit

5‧‧‧Time generating mechanism

6‧‧‧ external input mechanism

7‧‧‧Seven-segment display

8‧‧‧Voltage conversion mechanism

9‧‧‧RC filter circuit

CK‧‧‧ timing signal

SA1, SA2‧‧‧ analog signal

SC‧‧‧Control signal

SD1, SD2‧‧‧ digital signal

SP‧‧‧ parameter signal

P1‧‧‧First path

P2‧‧‧ second path

V1, V2‧‧‧ working voltage

Claims (9)

A tone processing device includes: an audio conversion mechanism, wherein the audio conversion mechanism receives analog audio via a first path and converts it into digital audio for output by a second path, or receives digital audio via the second path and converts to Analog audio is output from the first path; an audio processing mechanism is coupled to the audio conversion mechanism to the second path, the audio processing mechanism has a timbre parameter group, and receives the audio conversion mechanism from the second path a digital audio; and a control mechanism coupled to the audio conversion mechanism and the audio processing mechanism, the control mechanism correspondingly controls the audio conversion mechanism and the audio processing mechanism by a control command group, and correspondingly controls the first path and The switching state of the second path, wherein the audio conversion mechanism processes the digital audio according to the timbre parameter group when the first path and the second path are closed by the control mechanism. The musical tone processing device of claim 1, further comprising a voltage conversion mechanism connected to the audio conversion mechanism and the control mechanism to provide an operating voltage suitable for the audio conversion mechanism and the control mechanism. The music processing device of claim 1, further comprising a temporary storage unit connected to the control mechanism, wherein the temporary storage unit stores the control instruction group of the control mechanism. The musical tone processing device of claim 1, further comprising a timing generating mechanism that generates and transmits a timing signal to the audio processing mechanism and the control mechanism for receiving. The musical tone processing device according to claim 1, wherein the The format of the digital audio is selected from one of the I2S format, Left-justified, and Right-justified. The music processing device of claim 1, wherein the audio processing device further comprises a storage unit, the sound color parameter group is stored in the storage unit, and the storage unit stores the digital digits received from the audio conversion mechanism. Audio. The music processing device of claim 1, further comprising an RC filter circuit coupled to the audio conversion mechanism to filter out noise of digital audio or analog audio. The musical tone processing device of claim 1, further comprising an external input mechanism coupled to the control mechanism, the external input mechanism transmitting a parameter signal to the control mechanism, the control mechanism further transmitting the parameter signal corresponding to the parameter The command group is controlled to adjust the timbre parameter group of the audio processing mechanism. The music processing device of claim 1, further comprising an external transmission interface coupled to the audio conversion mechanism, the external transmission interface having one less audio input aperture and one audio output aperture.