JP2003066999A - Portable mixing recording apparatus, method and program for controlling the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable mixing recording apparatus, etc., which is not excessively restricted by a location, prevents deterioration of sound quality as much as possible and can easily produce music by using overdubbing, etc. SOLUTION: Analog audio signals inputted from internal microphones 59, 60 are converted into digital audio signals, given an effect by an Eff1, and inputted to a mixing part MB. A MP3 audio signal of a source file 11 in a memory card 10 is expanded, converted into a digital audio signal by a decoder 37, and inputted to the mixing part MB. Both digital audio signals inputted to the mixing part MB are mixed, reproduced, outputted through an Eff2 and a DA converting part 42, compressed, converted by an encoder 38, and stored as a mixed file 12 in the memory card 10. The mixed file 12 is used as a new source file 11 next time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable mixing recording apparatus capable of inputting an audio signal with a microphone or the like while monitoring the recorded audio signal and mixing to produce music, a control method and a program therefor.

[0002]

2. Description of the Related Art In recent years, due to advances in voice compression technology and electronic component miniaturization technology, a music apparatus having improved portability has been realized. For example, as a compression technique, MP3 (MPEG
-1 Portable MP using AudioLayer-III)
In the 3 player, a WAV file obtained by digitally sampling audio signals such as music performances and singing is encoded in the MP3 format format, and the compressed file is stored in the flash memory or the like, so that the WAV file can be reproduced outdoors. Enjoy it. Further, in the portable karaoke apparatus disclosed in Japanese Unexamined Patent Publication No. 2000-338984, a voice signal file encoded and stored in the MP3 format is expanded and reproduced, and at the same time, a real voice is input from a microphone and both are recorded. By mixing and playing, you can enjoy the karaoke performance of the desired song on the go.

All of these devices are intended for reproduction and do not record and store audio signals input from a microphone or the like, but there are devices that enable recording and storage. For example, a portable MP3 recorder has an analog input terminal, A / D-converts a voice signal from a cassette tape recorder, a radio, etc., further encodes it in an MP3 format, and stores a compressed file as a voice signal file. be able to.

However, in this portable MP3 recorder,
Mixing recording in which multiple input signals are multiplexed cannot be performed.
As a music device capable of mixing, for example, a double boombox is known. With this double radio-cassette, it is possible to reproduce a musical sound in one cassette and mix audio input signals from a microphone or an external input terminal with this to perform multiple recording in the other cassette.

[0005]

Generally, considering that music production by overdubbing or the like is performed on the go, a function of recording and mixing while maintaining sound quality is required. However, the portable MP3 player and the portable karaoke device are only for reproduction and cannot record an input audio signal, and the portable MP3 recorder cannot mix them. Therefore, neither is suitable for music production.
Further, since the double radio-cassette is repeatedly dubbed with an analog signal of a musical sound by repeating mixing, the sound quality is severely deteriorated by a large number of mixings, which is also unsuitable for music production.

On the other hand, a 4-channel MD multi-channel recorder using MD is known as a device for music production use (JP-A-8-77757). In this multi-channel recorder, a signal input by a line input can be A / D-converted and audio-compressed and recorded in an MD. For example, after overdubbing some parts, mix them and move them to an empty channel once (ping-pong recording), or if there are many parts, record another part to the empty channel by ping-pong recording. Finally, you can mix down to all channels.

However, in the above-mentioned multi-channel recorder, when performing ping-pong recording, since the digital audio signal recorded in the MD is converted into an analog audio signal and then mixed with the signal (analog audio signal) by line input, the ping-pong recording is performed. There was a problem that the sound quality deteriorates when the recording is repeated. Further, the multi-channel recorder is a stationary type and is not suitable for music production on the go.

The present invention has been made to solve the above-mentioned problems of the prior art, and its purpose is to produce music by overdubbing while preventing deterioration of sound quality as much as possible without being restricted by excessive places. It is to provide a portable mixing recording device, a control method thereof, and a program that can be easily performed.

[0009]

In order to achieve the above object, a portable mixing recording apparatus according to claim 1 of the present invention comprises an input conversion means for inputting an analog audio signal and converting it into a digital audio signal, and a predetermined memory. Decoding means for reading the original source file consisting of the compressed audio signal stored in and expanding and converting it into a digital audio signal, digital audio signal input and converted by the input converting means, and digital expanded and converted by the decoding means. Mixing means for mixing the audio signal, first encoding means for compressing and converting the digital audio signal mixed by the mixing means into a compressed audio signal, and compressed audio signal compressed and converted by the first encoding means Storage control means for storing the source file in the predetermined memory. Characterized in that was.

According to this structure, the analog audio signal is input and converted into a digital audio signal, and the original source file composed of the compressed audio signal stored in a predetermined memory is read out and expanded and converted into a digital audio signal. The input, the converted digital audio signal and the expanded and converted digital audio signal are mixed, and the mixed digital audio signal is compressed and converted into a compressed audio signal,
The compressed audio signal is stored in the predetermined memory as a new source file. As a result, the audio signal input as an analog audio signal and the original source file are
Both are converted to digital audio signals and mixed, and the mixed digital audio signals are stored as a new source file and can be used as the original source file for the next time, so if overdubbing is repeated, Since the music in which a large number of audio signals have been multiplexed is completed, and because it is digital mixing, even if overdubbing is repeated, only a slight sound quality deterioration occurs when the sound is compressed and expanded, and the sound quality deterioration as a whole is small. Complete. Further, since the mixed digital audio signal is compressed and converted into a compressed audio signal and stored, the memory capacity can be reduced and the portability can be improved. Therefore, it is possible to easily perform music production by overdubbing or the like while preventing deterioration of sound quality as much as possible without being restricted by an excessive place.

The predetermined memory may be composed of a removable storage medium, and for example, a memory card is suitable.

The portable mixing recording apparatus according to a second aspect of the present invention is the configuration according to the first aspect, further comprising an undo buffer section, wherein the storage control means stores the new source file in the predetermined memory. The original source file is temporarily stored in the undo buffer unit, and the original source file is erased.

According to this structure, when a new source file is stored in a predetermined memory, the original source file is temporarily stored in the undo buffer section and the original source file is erased. When recording is unsuccessful or you are not satisfied with the recording results, you can easily redo the mixed recording using the original source file temporarily stored in the undo buffer, and improve the usability when making music. .

The undo buffer unit may be provided in the main body of the portable mixing recording apparatus, or may be provided in a predetermined memory. Further, from the viewpoint of ease of use of the undo function, it is desirable that the file in the undo buffer section be held at least until the next storage of the new source file.

According to a third aspect of the present invention, there is provided the portable mixing recording apparatus according to the first or second aspect, wherein:
The storage control means includes second encoding means for compressing and converting the digital audio signal input and converted by the input converting means into a compressed audio signal, and the storage control means stores the new source file in the predetermined memory. The compressed audio signal compressed and converted by the second encoding means is stored in the predetermined memory as a separate file separate from the new source file.

According to this structure, when the new source file is stored in the predetermined memory, the compressed audio signal obtained by converting the input and converted digital audio signal is stored as a separate file separate from the new source file. Since it is stored in a predetermined memory, even if you do not like the mixing result after repeating overdubbing, you can process another file stored separately with a personal computer etc. You can improve the usability when making music, leaving room for practical use.

Further, in the portable mixing recording apparatus according to a fourth aspect of the present invention, in the configuration according to any one of the first to third aspects, when storing the new source file by the storage control means, a message to that effect is given. It is characterized by further comprising display means for displaying the predetermined information shown.

According to this structure, for example, it is possible to easily confirm that mixing recording is started or being recorded, and it is possible to improve usability.

The predetermined information may be displayed during the execution of the mixing recording, or may be temporarily displayed at the start of the recording. The predetermined information is, for example, a character display that visually indicates that mixing is being performed.

According to a fifth aspect of the present invention, in the portable mixing recording apparatus according to any one of the first to fourth aspects, at least one other portable mixing recording apparatus is cascade-connected as a slave recording apparatus. And a slave for inputting a slave-side digital audio input signal, which is input as an analog audio signal and converted into a digital audio signal in the slave-side recording device cascade-connected by the connecting device, from the slave-side recording device. An input means, wherein the mixing means inputs the digital audio signal input and converted by the input converting means, the digital audio signal expanded and converted by the decoding means, and the slave-side digital audio input input by the slave input means. Characterized by mixing with the signal That.

According to this configuration, at least one other portable mixing recording device is cascade-connected as a slave recording device, and is input as an analog audio signal in the cascade-connected slave recording device and converted into a digital audio signal. The slave side digital audio input signal is input from the slave side recording device, and the input and converted digital audio signal, the expanded and converted digital audio signal, and the input slave side digital audio input signal Are mixed. This allows other portable mixing recording devices to be cascade-connected as recording devices on the slave side, so that in addition to input and converted digital audio signals and expanded and converted digital audio signals, input from the slave recording device is also performed. It is possible to mix the slave digital audio input signal. Therefore, the number of input signals that can be mixed down at one time can be increased by the number of connected slave recording devices, and the efficiency of music production can be improved.

The number of other portable mixing recording devices connected in cascade may be three or more. Further, the other portable mixing recording devices may be devices having exactly the same configuration, and may be provided with a master designating device for designating a device on the master side, and one may be designated as a master.

In order to achieve the above object, a control method of a portable mixing recording apparatus according to a sixth aspect of the present invention is an input conversion step of inputting an analog audio signal and converting it into a digital audio signal, and the input conversion step is stored in a predetermined memory. A decoding step of reading an original source file composed of compressed audio signals and expanding and converting it into a digital audio signal; a digital audio signal input and converted by the input converting step and a digital audio signal expanded and converted by the decoding step. A mixing step of mixing, an encoding step of compressing and converting a digital audio signal mixed by the mixing step into a compressed audio signal, and a compressed audio signal compressed and converted by the encoding step as a new source file in the predetermined memory. And a memory control step of storing To.

According to this structure, the same operational effect as that of the first aspect can be obtained.

In order to achieve the above object, a program according to claim 7 of the present invention is a program for causing a computer to realize a control method of a portable mixing recording device, wherein an inputted analog audio signal is converted into a digital audio signal. An input conversion procedure for conversion, a decoding procedure for reading an original source file composed of a compressed audio signal stored in a predetermined memory and expanding and converting the original source file into a digital audio signal, and a digital audio signal input and converted by the input conversion procedure. And a mixing procedure of mixing the digital audio signal expanded and converted by the decoding procedure, an encoding procedure of compressing and converting the digital audio signal mixed by the mixing procedure into a compressed audio signal, and a compression conversion of the encoding procedure. Compressed audio signal as a new source file Characterized in that it is a program for executing the stored control instructions on a computer to be stored in the predetermined memory Te.

According to this structure, the same operational effect as that of the first aspect can be obtained.

To achieve the above object, the portable mixing recording apparatus according to claim 8 of the present invention comprises a memory for storing a compressed digital audio signal including a source file formed by the compressed digital audio signal, and an analog audio signal. Input converting means for inputting and converting into a digital audio signal, first level adjusting means for adjusting the level of the digital audio signal input and converted by the input converting means, and reading the source file stored in the memory. A digital audio signal whose level is adjusted by the first level adjusting means, a decoding means for expanding and converting the digital audio signal into a digital audio signal, a second level adjusting means for adjusting the level of the digital audio signal expanded and converted by the decoding means. And a digital audio signal whose level is adjusted by the second level adjusting means. Mixing means for mixing, encoding means for compressing and converting the digital audio signal mixed by the mixing means into a compressed audio signal, and storage control means for storing the compressed audio signal compression-converted by the encoding means in the memory. It is characterized by having.

According to this structure, one analog (stereo) audio signal is input and converted into a digital signal, and one source file formed by one compressed digital (stereo) audio signal is expanded. Although it is a portable configuration that only mixes input signals, by repeatedly overdubbing them, a desired number of input sources can be mixed to produce music. In addition, the first level adjusting means for inputting one analog (stereo) audio signal and converting the level of the converted digital signal, and the source file formed by one compressed digital (stereo) audio signal are expanded. Since the second level adjusting means for adjusting the level of the thing is separately provided and the level is independently adjusted, the level of each input source can be adjusted with the minimum configuration. As a result, it is possible to perform mixing recording with a higher degree of freedom.
Furthermore, since the data is compressed and expanded digitally, the storage capacity of the memory can be saved while suppressing the deterioration of the sound quality.

According to a ninth aspect of the present invention, in the portable mixing recording apparatus according to the eighth aspect, the storage control means substantially overwrites the source file when the compressed audio signal is stored in the memory. It is characterized by doing.

According to this configuration, the original source file is substantially overwritten each time overdubbing is performed, so that the user does not need to delete the original source file, and the source file is not deleted. Since the number does not increase, it also saves memory storage capacity.

Further, the portable mixing recording apparatus according to a tenth aspect of the present invention is the configuration according to the eighth aspect, further comprising an undo buffer section, wherein the storage control means stores the compressed audio signal in the memory. While temporarily storing the file in the undo buffer section,
It is characterized in that the source file is deleted.

According to this structure, the same operational effect as that of the second aspect is obtained.

In order to achieve the above object, the portable mixing recording apparatus according to claim 11 of the present invention comprises a memory for storing a compressed digital audio signal including a source file formed by the compressed digital audio signal, and an analog audio signal. Stored in the memory; input conversion means for inputting and converting into a digital voice signal; first effect imparting means for imparting a first type effect to the digital voice signal input and converted by the input conversion means; Decoding means for reading out the source file and expanding / converting it into a digital audio signal, mixing the digital audio signal to which the first effect is applied by the first effect applying means and the digital audio signal expanded / converted by the decoding means. Mixing means and a digital voice signal mixed by the mixing means. A second effect imparting means for imparting a different second type of effect from the first type, the second
And an output unit for outputting the digital audio signal to which the effect of the second type has been added by the effect adding unit, to the outside of the apparatus.

According to this structure, the effect of the type that makes it difficult to hear even if overdubbing is performed many times is achieved.
The second effect imparting means imparts an effect of a type that is difficult to hear when the audio signal to which the effect is imparted is repeatedly overdubbed, such as reverb, which is imparted by the effect imparting means, that is, many times. The effect of the type that does not become difficult to hear even if overdubbing is performed should be overdubbed many times, and the effect of the type that becomes difficult to hear after overdubbing should be applied when outputting the overdubbed audio signal. Since it is given only once, it is a minimum configuration,
Good sound quality can be maintained.

In order to achieve the above object, a program according to claim 12 of the present invention is a program for causing a computer to realize a control method for a portable mixing recording apparatus, wherein an analog audio signal is input to a digital audio signal. An input conversion procedure for converting, a first level adjustment procedure for adjusting the level of the digital audio signal input and converted by the input conversion procedure, and a compressed digital audio signal including a source file formed by the compressed digital audio signal is stored. For decoding the source file stored in the memory to expand and convert it into a digital audio signal, a second level adjusting procedure for adjusting the level of the digital audio signal expanded and converted by the decoding procedure, and the first The digital audio signal whose level is adjusted by the level adjustment procedure and A mixing procedure for mixing the digital audio signal whose level is adjusted by the two-level adjustment procedure, an encoding procedure for compressing and converting the digital audio signal mixed by the mixing procedure into a compressed audio signal, and a compression conversion for the encoding procedure. It is a program for causing a computer to execute a storage control procedure for storing the compressed audio signal in the memory.

According to this structure, the same operational effect as that of the eighth aspect is obtained.

In order to achieve the above object, a program according to claim 13 of the present invention is a program for causing a computer to realize a control method of a portable mixing recording apparatus, wherein an analog audio signal is input to a digital audio signal. An input conversion procedure for converting, a first effect imparting procedure for imparting a first type effect to the digital audio signal input and converted by the input conversion procedure, and a compressed digital including a source file formed by the compressed digital audio signal. A decoding procedure for reading a source file stored in a memory for storing an audio signal and expanding and converting the source file into a digital audio signal, and a digital audio signal to which a first type effect is applied by the first effect applying procedure and the decoding Mixing procedure for mixing with the digital audio signal expanded and converted by the procedure A second effect imparting To grant second types of effects of different types and the first type to the mixing digital audio signals by the mixing procedure,
It is a program for causing a computer to execute an output procedure of outputting a digital audio signal to which the second type of effect is added by the second effect applying procedure to the outside of the apparatus.

According to this structure, the same operational effect as that of the eleventh aspect can be obtained.

Each computer-readable storage medium that stores each of the programs according to claims 7, 12 and 13 constitutes the present invention.

[0040]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1A and 1B are views showing the appearance of a portable mixing recording apparatus according to an embodiment of the present invention. FIG. 1A is a plan view, FIG. 1B is a front view, and FIG. ) Indicates right side views. The mixing recording device 20 is
It is a music device that aims to input a voice signal with a microphone etc. while monitoring the recorded voice signal and digitally mix it to produce music. Configured as a device.

In FIG. 3A, DC power is supplied from the terminal (DC) 51. Cascade terminal (casc
ade) 52 (part of connection means, slave input means)
As will be described later, is a terminal for connecting two of the present devices in cascade. Localization operator (input pa
n) 53 is used to set the localization of the input voice. The memory card 10 (predetermined memory) described later is inserted into the slot 54. USB (Universa
The l Serial Bus) terminal 55 is a terminal for making a USB connection with a personal computer (not shown). The power switch 56 is pressed to turn on / off the power of the apparatus.

In FIG. 6B, a small built-in speaker 57 is used for auxiliary output of a voice signal and generation of various operation sounds. The master designation switch 58 is a switch for designating which device is the master (the other is the slave) side in the cascade connection described later, and the recording device whose master designation switch 58 is pressed last. Is the master and the other is the slave. Built-in microphone 59, 60
(MicL / R) (a part of the input conversion means) is used to stereo-input an external voice such as a real voice as an analog signal.

The display unit 61 is composed of a liquid crystal display device, and the display unit 61 displays the title, time, playing time,
Various information such as mode and setting information is displayed. disp
The / sys switch 62 is used to switch the display mode of the display unit 61 and to switch the display of the system setting screen for copying, erasing songs, changing song names, and the like. The rep switch 63 is used when performing repeat reproduction of musical sounds. The EQ switch 64 and the rev switch 65 are used for selecting the output ambient, for example, for equalizing the output sound and adding reverb.

Mic switch 66, inst switch 6
The 7 and aux switches 68 are used for an input audio path, that is, for input selection, and any one of the selected switches lights up. On the other hand, as shown in FIG.
An inst terminal 84, an external microphone (ext-mic) terminal 85 for connecting an external microphone of an attached pin type, and an aux terminal 86 are provided on the side surface of the device (all are part of the input conversion means). Normally, when the mic switch 66 is selected, the signals from the built-in microphones 59 and 60 can be input, but when the external microphone is connected to the external microphone (ext-mic) terminal 85, the signal is output from the external microphone. The input signal of is given priority. When the built-in microphone is selected, the built-in speaker 57 is automatically turned off. When the inst switch 67 is selected, a signal from an electronic musical instrument such as a guitar or a keyboard connected to the inst terminal 84 can be input. When the aux switch 68 is selected, au
A signal from a device such as an audio device connected to the x terminal 86 can be input as a line.

In FIG. 7B, the input level adjusting operator 69 is used to adjust the input level of the input audio signal. The output level adjustment operator 70 is used to adjust the reproduction level of the audio signal of the source file 11 stored in the memory card 10 described later.

The LED level meter 71 includes a plurality of LEDs.
The input level, the playback level, the recording level, etc. are displayed by lighting and blinking each. The play / record (play / stop / ent) button 72 is used as a key for determining various settings as well as starting and stopping playback and recording. The eff button 73 is used to add an effect such as delay to the input audio signal. met
The button 74 is used to instruct setting and on / off of the metronome function. The tnr button 75 is used to use the tuner function and the tone generator function. In the input mode, the LED level meter 71 blinks according to the pitch of the input voice. In the tone mode, the set pitch (reference tone) is sounded.

The rec button 76 is used when digitally recording the input voice. When pressed, the rec button 76 enters a recording standby state, and when the playback / record button 72 is subsequently pressed, recording is started. The mix button 77 is used when performing digital mixing recording of the input voice and the audio signal of the source file 11. When the mix button 77 is pressed, the mixing recording standby state is entered, and when the playback recording 72 is subsequently pressed, the mixing recording is started. To be done. The pause button 78 is
Used to pause playback. Buttons 73-76
Each has a built-in LED (not shown), and is lit according to the pressing operation status.

Plus button 79, minus button 80
Is used to select a song (hereinafter referred to as “song”) in the source file 11, and the plus and minus buttons 7
The song selected in 9, 80 is displayed on the display unit 61.
When the desired song is displayed, play / record button 72
By pressing, the song is decided. If the user does not give a name to the song, the name (serial number or the like) is automatically given when the song is stored. u
The ndo button 87 is used to cancel the immediately preceding memory access process and return to the original state.

In FIG. 7C, the phone terminal 81
A headphone or the like can be connected to the, and the user can listen to the playback of the input voice, song, and mixing voice. The volume (vol) operator 82 is used to set the audio output level. The gain operator 83 is used to adjust the gain of the audio signal input via the inst terminal 84.

FIG. 2 is a block diagram showing the functional arrangement of this mixing recording apparatus. The memory card 10 is
The storage medium is portable and detachable, and the state in which the memory card 10 is inserted is shown in FIG.

Input select section (input select)
25 (a part of the input conversion means) is a built-in microphone 59, 6
0, inst terminal 84, external microphone terminal 85, or a
Which of the ux terminals 86 to input the analog audio signal is switched. The analog voice signal output from the input switching unit 25 is A / D converted by the AD conversion unit 26 (a part of the input conversion means) to become a digital voice signal, and thereafter, equalized by the EQ 27 and consonant suppression processing is performed by the DYN 28. Then, effects such as reverb, delay and flanger are added by the EFF 29.

The output signal from the EFF 29 is an input level adjustment and localization operator 5 by an input level adjustment operator 69.
Input position (BUS1, 2) after localization setting by 3
33 and the switch unit MSW. As described above, in the cascade connection, the master side is designated by the master designation switch 58, but the switch unit MSW is turned on when the device is on the master side and turned off when the device is on the slave side. It is configured.

The signal input to the input line 33 is input to the encoder (ENCODE) 39 (second encoding means). When the device 20 is on the slave side, the signal input to the input line 33 is further output from the output line 8 to the cascade-connected device on the master side.

The apparatus 20 is provided with a storage control unit 30 (storage control means) and an undo buffer 31 (undo buffer unit). The undo buffer 31 is composed of a RAM or the like. Undo buffer 31 and memory card 1
0 is connected to the storage control unit 30 and the storage control unit 3
The storage operation is controlled by 0. The memory card 10 is provided with a USB I / F (interface) 35.

FIG. 3 is a block diagram showing the internal structure of the portable mixing recording apparatus.

The present apparatus 20 has the undo buffer 31, the slot 54 and the CPU 91 which are connected to the CPU 91 via the bus 97.
And the USB terminal 55 is connected, RAM92, R
The OM 93, the input / output unit 94, the operation unit 95, and the display unit 96 are connected and configured.

The CPU 91 controls the entire apparatus. R
The AM 92 temporarily stores various data, and the CPU 91
Also functions as a work area for. ROM93 is CP
In addition to various control programs executed by U91, various data are stored.

The input / output unit 94 is a group of elements related to input and output, and includes the above-mentioned cascade terminal 52, built-in microphones 59 and 60, terminals 84 to 86, built-in speaker 57, phone terminal 81 and the like. The operation unit 95 is a group of elements related to input and operation, and includes the master designation switch 58, the switches 62 to 68, and the adjustment operators 69 and 70 described above.
And buttons 72 to 80 and the like. The display unit 96 is a group of elements related to display, and includes the display unit 61 and the LEDs described above.
It is composed of a level meter 71.

Returning to FIG. 2, the memory card 10 can store a source file 11, a mix file 12, and a material file 13. These are all MP3
It is a file composed of a compressed audio signal compressed in the (MPEG-1 Audio Layer-III) format.

The source file 11 is an original file to be mixed with the input voice signal from the built-in microphones 59, 60, etc., which is input via the input switching section 25. Initially, the voice input without mixing is performed. Recording (hereinafter,
"Mixed file 12" by "single recording"
It is stored as (in this case, since it is not mixed, it does not match as a nickname). There may be a plurality of source files 11. Further, the source file 11 may be obtained by mounting the memory card 10 on another device and storing the existing data in advance.

In the mix file 12, the audio signal of the source file 11 and the input audio signal via the input switching section 25 are mixed and stored (hereinafter, referred to as “mixing recording”).
The new source file 11 can be used in place of the original source file 11 from the next time.

The material file 13 is stored in the input switching section 2
The input audio signal via 5 is created without being mixed with the audio signal of the source file 11, and is a file (separate file) separate from the mix file 12
Is stored as It should be noted that whether or not to create the material file 13 at the time of mixing recording can be set by the user's intention.

For mixing recording, source file 1
The audio signal No. 1 is expanded and converted by the decoder (DECODE) 37 (decoding means) to become a digital audio signal. This digital audio signal is input to the output line 34 (mixing means) after the output level is adjusted by the output level adjusting operator 70.

When the device 20 is on the master side, the signal input to the switch unit MSW after the localization setting by the localization operator 53 is also input to the output line 34. Further, as will be described later, a digital audio signal (slave-side digital audio input signal) is input to the output line 34 through the line 36 (a part of the slave input means) from the cascade-connected slave-side device. When a signal is input to the output line 34 from any of the switch unit MSW, the device on the slave side, or the decoder 37, the signal is output to the encoder (ENCODE) 38 (first encoding means) and the EFF 40, and
It is output to the device on the slave side connected in cascade via the output line 7.

The digital audio signal input from the output line 34 to the encoder 38 is output by the encoder 38 to MP
It is compressed and converted in three formats and stored in the memory card 10 as the mix file 12. At the same time, the digital audio signal input to the encoder 39 from the input line 33 is compressed and converted in the MP3 format by the encoder 39 and stored in the memory card 10 as the material file 13.

When the mix file 12 is stored by the mixing recording, the original source file 11 is erased. Therefore, by storing the mix file 12, the same processing as apparently overwriting the source file 11 with the new source file 11 is performed, but at that time, the original source file 11 is stored in the undo buffer 31. It is temporarily stored. This makes it easy to redo the mixing recording.

Although the undo buffer 31 is provided in the main body of the apparatus 20, it may be provided in the memory card 10. Further, from the viewpoint of ease of use of the undo function, it is desirable that the files in the undo buffer 31 be retained at least until the next storage of the mix file 12.

The digital audio signal input from the output line 34 to the EFF 40 is given an effect by the EFF 40,
Equalized by EQ41, D / by DA converter 42
After being A-converted into an analog audio signal, the audio signal is output to the phone terminal 81 and, in some cases, the built-in speaker 57 after the volume is set by the volume operator 82.

As described above, in the present apparatus, digital recording and real-time playback of the input voice, digital mixing recording and real-time playback of the input voice and the audio signal of the source file 11 (song), and playback of the audio signal of the source file 11 are performed. And so on.

The apparatus 20 is further provided with a tuner 45 and a tuner / metronome 44. In the above
In the put mode, the tuner 45 has the input switching unit 2
L is detected by detecting the pitch of the analog voice signal output from
It is displayed on the ED level meter 71. T mentioned above
In the one mode, from the tuner / metronome 44,
The reference tone having the set pitch is output to the DA converter 42.
When the metronome function is turned on, the metronome sound from the tuner / metronome 44 is DA conversion unit 4
2 is output. Reference sound or metronome sound is ph
Sound is generated from the one terminal 81 or the built-in speaker 57.

The LED level meter 71 displays the input level of the input voice on the basis of the signal passed through the input level adjusting operator 69, and at the same time, displays the song based on the signal of the source file 11 passed through the output level adjusting operator 70. Display the output level of. The LED level meter 71 also displays the input level of the signal input from the output line 34 to the encoder 38. Each of these levels is LED
Instead of the level meter 71, it may be displayed on the display unit 61.

Although not shown, the device 20 is
By connecting to the personal computer with the SB terminal 55, the files in the mounted memory card 10 can be accessed from the personal computer in the same manner as an external drive, and in addition to copying, deleting and moving,
If software is prepared, editing and processing can be performed on a personal computer.

Various operations in this configuration will be described.

FIGS. 4 to 6 show the signal flow for each operation.
FIG. 3 is a block diagram simply corresponding to FIG. In each figure, Eff1 is EQ27, DYN2 shown in FIG.
8 and EFF29 correspond. And in Eff1,
The eff button 73 is provided correspondingly. The output from the EFF 29 to the switch unit MSW are omitted. In the mixing unit MB (mixing means), the switch unit MSW to the encoder 38 shown in FIG.
Up to the input of the EFF 40 and the output level adjusting operator 70
Corresponds to the output line 34 extending to the output side of. Eff
2 corresponds to the EFF 40 and the EQ 41 shown in FIG. A rev switch 65 is provided corresponding to Eff2.

First, in the independent recording of the input voice, as shown in FIG.
As shown in (a), the analog audio signal input from the selected input means (built-in microphones 59, 60, etc.) is A
It is converted into a digital audio signal by the D conversion unit 26, and Eff1
Is added to the effect and the result is input to the mixing unit MB. After that, the data is reproduced and output via the Eff2 and the DA converter 42, and is compressed and converted by the encoder 38,
It is stored in the memory card 10 as an MP3 file (mix file 12 that is not mixed here).

When reproducing the song of the source file 11, as shown in FIG. 4B, the audio signal of the MP3 file (here, the selected song in the source file 11) of the memory card 10 is converted into a digital audio signal by the decoder 37. Is decompressed and converted to and input to the mixing unit MB. afterwards,
It is reproduced and output via the Eff2 and the DA converter 42.

In the mixing recording, as shown in FIG. 5A, the input analog audio signal is converted into the AD conversion section 26.
Is converted into a digital audio signal by, and an effect is given by Eff1 and is input to the mixing unit MB. On the other hand, the audio signal of the source file 11 of the memory card 10 is expanded and converted into a digital audio signal by the decoder 37 and input to the mixing unit MB. Both digital audio signals input from Eff1 and the decoder 37 to the mixing unit MB are
The mixed data is reproduced and output through the Eff2 and the DA conversion unit 42, compressed and converted by the encoder 38, and stored in the memory card 10 as the mix file 12. Therefore, voice input can be performed while monitoring the reproduction output. Further, since the mix file 12 functions as a new source file 11 from the next time, overdubbing can be repeated with almost no deterioration in sound quality.

In the mixing recording while leaving the material file 13, as shown in FIG.
In addition to the operation process in the case of (a), a process of compressing and converting the digital audio signal from Eff1 in the MP3 format by the encoder 39 and storing the material file 13 in the memory card 10 is performed. The material file 13 can be an asset for later processing with a personal computer or the like.

When recording in synchronization with the metronome, as shown in FIG. 6A, in addition to the operation processing in the case of FIG. 4A, the tuner / signal is used as a trigger by the synchronizing signal from the encoder 38. A metronome sound is output from the metronome 44 and is sounded via the DA converter 42. The metronome function is used for mixing recording (Fig. 5
It is also applicable to (a) and (b)) and real-time reproduction of input voice.

When the tuner function is used, FIG. 6 (b)
As shown in, the signal for blinking the LED level meter 71 in accordance with the pitch of the input voice is output from the tuner 45.
It is output to the D conversion unit 26. When the tone generator function is used, as shown in FIG. 6C, the tuner / metronome 44 outputs a reference tone having a set pitch, and the tone is generated via the DA converter 42.

FIG. 7 is a diagram showing a display example of the display unit 61.

Information corresponding to each operating condition and setting condition is displayed on the display section 61, and FIG. 7 shows an example of a display particularly in the case of single recording and its stop, and mixing recording and its stop.

When the independent recording is started, the rec button 7
6 (FIG. 1) lights up, and the display unit 61 displays “REC” or the like on the display unit 61 as shown in FIG. <
> ”Is displayed. When the independent recording is stopped, the character "U" is displayed as shown in FIG.
“U” indicates that undo is possible. If the undo button 87 is pressed at this point, an undo screen (not shown) is displayed, and the previous recording process is canceled by a predetermined operation, and the original state is restored. .

On the other hand, when mixing recording is started, m
The ix button 77 (FIG. 1) lights up and the display 61
As shown in FIG. 7C, a character “<> __ <during mixing recording, which indicates visually“ MIX ”or the like and visually indicates that mixing recording is in progress (indicating that the double cassette is operating). ><> __ <> ”(predetermined information) is displayed. This makes it easy to visually confirm that the mixing recording is in progress. The character during mixing recording is displayed until mixing recording is stopped, but it may be displayed temporarily at the start of mixing recording. Further, when the mixing recording is stopped, the character "U" is displayed as shown in FIG. 7D, and if the undo button 87 is pressed at this point, an undo screen (not shown) is displayed and a predetermined message is displayed. The operation cancels the immediately preceding mixing recording process and restores the original state.

The recording character and the mixing recording character are not limited to the exemplified ones.
A display using D may be used.

Although the undo function can be performed only once, the capacity of the undo buffer 31 can be expanded so that the undo processing can be performed a plurality of times.

FIG. 8 is a block diagram showing a signal flow when two portable mixing recording devices of the present invention are cascade-connected for mixing recording. In the figure, a state is shown in which portable mixing recording devices 20 having the same configuration are connected to each other through cascade terminals 52 (FIG. 1), and the master side is referred to as the master side device 20A and the slave side is referred to as the slave side device 20B. As described above, by depressing the master designation switch 58 of the master side device 20A, the switch parts MSW of both devices are set to the master side device 20A.
It is turned on in A and turned off in the slave device 20B. It should be noted that the process of creating the material file 13 is omitted in FIG.

The analog audio signal input through the input switching section 25 of the master side device 20A is "signal A", the MP3 audio signal stored as the source file 11 of the master side device 20A is "signal B", and the slave Side device 2
The analog audio signal input via the input switching unit 25 of 0B is referred to as “signal C”, and the MP3 audio signal stored as the source file 11 of the master side device 20A is referred to as “signal D”. Regardless of the above, all are referred to in the same manner.

In the master side device 20A, first, "signal A" and "signal B" are input to the mixing unit MB.
Furthermore, "signal C" (slave side digital audio input signal) output from the output line 8 of the slave side device 20B
Is input to the mixing unit MB via the cascade terminal 52. In the mixing unit MB, “signal A + B + C”, which is a digital audio signal obtained by mixing “signal A”, “signal B”, and “signal C”, is generated, and this is Eff.
2 and is reproduced and output via the DA converter 42,
The mix file 12 is compressed and stored in the memory card 10 via the encoder 38. As a result, the "signal C" is subject to mixing in the same manner as the "signal A", so that the number of signals that can be simultaneously input as analog audio signals increases. “Signal A + B + C” is further mixed in the mixing section M
It is output from B to the slave side device 20B via the line 7 and the cascade terminal 52.

On the other hand, in the slave device 20B, the "signal A + B + C" input via the cascade terminal 52 and the "signal D" from the source file 11 are input to the mixing unit MB. In order to prevent the signal from looping, as described above, the “signal C” is not input from Eff1 to the mixing unit MB. In the mixing department MB,
“Signal A + B + C” and “signal D” are mixed to generate a digital audio signal “signal A + B + C + D”, which is reproduced and output via Eff2 and the DA converter 42, and also mixed file 12 via the encoder 38. Is compressed and stored in the memory card 10.

When the "signal A + B + C + D" is accurately reproduced and recorded, a process for synchronizing the "signal A + B + C" and the "signal D" is required. Therefore, during cascade connection, the "signal D" from the slave side device 20B
It is also possible to set such that the reading is not performed and to process only “signal A”, “signal B” and “signal C”. By doing so, the reproduction and recording of the "signal A + B + C" similar to that of the master side device 20A can be simultaneously performed by the slave side device 20B.

According to the present embodiment, the audio signal input as the analog audio signal and the compressed audio signal stored in the source file 11 are converted into digital audio signals, then mixed, compressed and converted, and newly converted. The new source file can be used as the original source file for the next time.For example, if overdubbing is repeated like a multi-channel recorder, many audio signals will be multiplexed. The performed song is completed. Further, since the present apparatus is portable, it is suitable for carrying and mixing to a specific musical instrument player. Further, since the mixing is performed in a digital state, the sound quality hardly deteriorates even if overdubbing is repeated, which is suitable for music production. Further, since the mixed digital audio signal is compressed and converted into a compressed audio signal and stored, the memory capacity can be reduced and the portability of the device can be improved. Therefore, without being restricted by excessive space,
You can easily perform music production by overdubbing while on the go, while preventing deterioration of sound quality as much as possible.

Further, in this embodiment, when the mix file 12 is stored as a new source file, the original source file 11 is temporarily stored in the undo buffer 31, so that the mixing recording fails or the recording result is lost. When not satisfied, the mixing source recording can be easily redone by using the original source file temporarily stored in the undo buffer 31, and the usability during music production can be improved.

Further, in this embodiment, when the mix file 12 is stored, the material file 13 is stored as a separate file separate from the mix file 12. Therefore, overdubbing is repeated to finally obtain a mixing result. Even if the user does not like it, the material file 13 can be processed later by a personal computer or the like, and it is possible to improve usability during music production while leaving room for subsequent use.

In the present embodiment, the mixing recording character is displayed during mixing recording.
It is possible to easily visually confirm that the mixing recording is in progress, and the usability can be improved.

Further, in the present embodiment, another portable mixing recording device is cascade-connected as the slave device 20B, so that the input signal input from the slave device 20B can be added to the object of mixing. The number of input signals that can be mixed down can be increased each time, and the efficiency of music production can be improved.

The number of other portable mixing recording devices connected in cascade may be three or more. In that case,
Instead of the cascade terminal 52, a master-in terminal and a slave-out terminal are provided, and the master-in terminal of the higher-level device and the slave-out terminal of the lower-level device are connected in a daisy chain manner so that the vertical relationship is defined. Good.
As a result, the number of input signals that can be mixed down at one time can be increased by the number of slave side devices connected in cascade.

Although MP3 is used as the audio signal compression format in the present embodiment, the present invention is not limited to this.
TwinVQ (frequency domain weighted interleaved vector quantization), ASF (Advanced Streaming Forma)
Other compression formats such as t) may be adopted.

The memory card 10 may be composed of another removable storage medium or a fixed storage medium provided in the main body of the apparatus 20.

When the storage medium storing the control program represented by the software for achieving the present invention is read into the device to achieve the same effect, the program read from the storage medium is obtained. The code itself realizes the novel function of the present invention, and the storage medium storing the program code constitutes the present invention. When the program code is provided via a transmission medium or the like with a communication interface, the program code itself constitutes the present invention. In addition, as a storage medium in these cases,
In addition to the ROM, a floppy (registered trademark) disk, a hard disk, an optical disk, a CD-ROM, a CD-R, a magnetic tape, a non-volatile memory card, or the like can be used.

Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also the OS or the like running on the computer is executed based on the instruction of the program code. It goes without saying that a case where some or all of the actual processing is performed and the functions of the above-described embodiments are realized by the processing is also included. Further, after the program code read from the storage medium is written in the memory provided in the function expansion board inserted in the computer or the function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that this also includes the case where the CPU provided in the board or the function expansion unit performs some or all of the actual processing, and the processing realizes the functions of the above-described embodiments.

[0103]

As described above, according to the first aspect of the present invention.
According to the portable mixing recording apparatus according to the present invention, the control method of the portable mixing recording apparatus according to claim 6, or the program according to claim 7, overdubbing is performed while preventing deterioration of sound quality as much as possible without being restricted by an excessive place. You can feel free to make music by using etc.

According to the portable mixing recording apparatus of the second or tenth aspect, the original source file temporarily stored in the undo buffer is used when mixing recording fails or the recording result is not satisfied. Mixing recordings can be easily redone and the usability during music production can be improved.

Further, according to the portable mixing recording apparatus of the third aspect, even if the overdubbing is repeated and the mixing result is finally disliked, the separately stored separate files can be read by the personal computer or the like. It can be processed later, leaving room for subsequent use and improving usability when making music.

Further, according to the portable mixing recording apparatus of the fourth aspect, it is possible to easily confirm, for example, that the mixing recording is started or being recorded, and the usability can be improved.

Further, according to the portable mixing recording device of the fifth aspect, the number of input signals that can be mixed down at one time can be increased by the number of connected slave recording devices, and the efficiency of music production can be improved. Can be improved.

According to the portable mixing recording apparatus of claim 8 of the present invention or the program of claim 12, one analog (stereo) audio signal is input and converted into a digital signal, and Although it is a portable configuration that only mixes a source file formed by two compressed digital (stereo) audio signals with an expanded source file, by repeatedly overdubbing them, a desired number of input sources can be mixed. Can make music. In addition, the first level adjustment for adjusting the level of one analog (stereo) audio signal input and converted into a digital signal and the source file formed by one compressed digital (stereo) audio signal are expanded. Since the second level adjustment for adjusting the level is performed independently of each other, the level adjustment of each input source can be performed with the minimum configuration, which allows the degree of freedom of the level adjustment. It is possible to perform more improved mixing recording. Furthermore, since the data is compressed and expanded digitally, the storage capacity of the memory can be saved while suppressing the deterioration of the sound quality.

Further, according to the portable mixing recording apparatus of the ninth aspect of the present invention, the original source file is substantially overwritten each time the overdubbing is performed, so that the user can copy the original source file. Need not be deleted, and because the number of source files does not increase,
It also saves memory storage capacity.

According to the portable mixing recording apparatus of the eleventh aspect of the present invention or the program of the thirteenth aspect, an effect of a type that does not become difficult to hear even if overdubbing is repeated overdubbing is repeatedly performed. The effect of the type that makes it difficult to hear if overdubbed many times is given only once when the overdubbed audio signal is output, so it is possible to achieve good results with a minimum configuration. The sound quality can be maintained.

[Brief description of drawings]

FIG. 1 is a diagram showing an external appearance of a portable mixing recording device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a functional configuration of the recording apparatus.

FIG. 3 is a block diagram showing an internal configuration of the recording apparatus.

FIG. 4 is a block diagram schematically showing a signal flow for each operation (single recording, song reproduction) corresponding to FIG.

FIG. 5 is a block diagram schematically showing a signal flow for each operation (mixing recording) in correspondence with FIG. 2.

FIG. 6 is a block diagram schematically showing a signal flow for each operation (when the metronome, tuner, and tone generator functions are operated) in correspondence with FIG. 2.

FIG. 7 is a diagram showing a display example of a display unit.

FIG. 8 is a block diagram showing a signal flow when mixing recording is performed by connecting two recording devices in cascade.

[Explanation of symbols]

10 memory card (predetermined memory), 11 source file, 12 mix file, 13 material file, 25 input switching unit (part of input conversion means), 26 AD conversion unit (part of input conversion means),
30 storage control section (storage control means), 31 undo buffer (undo buffer section), 34 output line (mixing means), 36 line (part of slave input means), 37 decoder (decoding means), 3
8 encoder (first encoding means), 39 encoder (second encoding means), 52 cascade terminal (connection means, part of slave input means), 59, 6
0 built-in microphone (part of input conversion means), 61 display (display means), 84 inst terminal (part of input conversion means), 85 external microphone terminal (part of input conversion means), 86 aux terminal (input) Part of the conversion means),
MB mixing section (mixing means), 91 CP
U, 92 RAM, 93 ROM

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G10L 9/18 J G11B 27/02 JF term (reference) 5D044 AB05 BC04 CC06 EF01 EF03 EF05 GK08 HL14 5D045 DA20 DB10 DB10 5D110 AA17 AA19 AA27 BB20 CA06 CA18 CB06 CK02 5J064 AA04 BB12 BC02 BC06 BC07 BD03

Claims (13)

[Claims] 1. Input conversion means for inputting an analog audio signal and converting it into a digital audio signal, and decoding for reading an original source file consisting of a compressed audio signal stored in a predetermined memory and expanding and converting it into a digital audio signal. Means, mixing means for mixing the digital audio signal input and converted by the input conversion means and the digital audio signal expanded and converted by the decoding means, and the compressed audio signal for the digital audio signal mixed by the mixing means A portable mixing unit comprising: a first encoding unit that compresses and converts the compressed audio signal into a predetermined memory; and a storage control unit that stores the compressed audio signal compressed and converted by the first encoding unit as a new source file in the predetermined memory. Recording device. 2. An undo buffer section is provided, and the storage control means temporarily stores the original source file in the undo buffer section and stores the original source file when storing the new source file in the predetermined memory. 2. The portable mixing recording apparatus according to claim 1, wherein the source file is deleted. 3. A second audio signal which is compressed and converted into a compressed audio signal by the digital audio signal input and converted by the input conversion means.
An encoding unit, wherein the storage control unit stores the new source file in the predetermined memory;
The portable mixing recording apparatus according to claim 1 or 2, wherein the compressed audio signal compressed and converted by the second encoding means is stored in the predetermined memory as a separate file separate from the new source file. . 4. When the storage control means stores the new source file, a display means is provided for displaying predetermined information indicating the fact.
4. The portable mixing recording device according to any one of 3 above. 5. Connection means for cascading at least one other portable mixing recording device as a slave recording device, and digital audio input as an analog audio signal in the slave recording device cascade-connected by said connecting device. Slave input means for inputting a slave side digital audio input signal converted into a signal from the slave side recording device, wherein the mixing means receives the digital audio signal input and converted by the input converting means and the decoding 5. The portable mixing recording device according to claim 1, wherein the digital audio signal expanded and converted by the means and the slave side digital audio input signal input by the slave input means are mixed. . 6. An input conversion step for inputting an analog audio signal and converting it into a digital audio signal, and a decoding for reading an original source file composed of a compressed audio signal stored in a predetermined memory and expanding and converting it into a digital audio signal. A step, a mixing step of mixing the digital audio signal input and converted by the input conversion step and a digital audio signal expanded and converted by the decoding step, and a digital audio signal mixed by the mixing step is a compressed audio signal And a storage control step of storing the compressed audio signal compression-converted by the encoding step as a new source file in the predetermined memory. . 7. A program for causing a computer to implement a control method for a portable mixing recording device, comprising: an input conversion procedure for converting an input analog audio signal into a digital audio signal; and a compression stored in a predetermined memory. A decoding procedure for reading an original source file composed of audio signals and expanding and converting it into a digital audio signal, and mixing a digital audio signal input and converted by the input converting procedure and a digital audio signal expanded and converted by the decoding procedure. A mixing procedure, an encoding procedure for compressing and converting a digital audio signal mixed by the mixing procedure into a compressed audio signal, and a compressed audio signal compression-converted by the encoding procedure is stored in the predetermined memory as a new source file. Memory control procedure Program to be executed by the Yuta. 8. A memory for storing a compressed digital audio signal including a source file formed by the compressed digital audio signal, input conversion means for inputting an analog audio signal and converting it into a digital audio signal, and the input conversion. First level adjusting means for adjusting the level of the digital audio signal input and converted by the means, decoding means for reading the source file stored in the memory and expanding and converting the source file into a digital audio signal, and expanding and converting by the decoding means A second level adjusting means for adjusting the level of the digital audio signal, a digital audio signal whose level is adjusted by the first level adjusting means, and a digital audio signal whose level is adjusted by the second level adjusting means. Mixing means for mixing, and mixing by the mixing means. A portable mixing recording device comprising: an encoding unit for compressing and converting the compressed digital audio signal into a compressed audio signal; and a storage control unit for storing the compressed audio signal compressed and converted by the encoding unit in the memory. . 9. The portable mixing recording apparatus according to claim 8, wherein the storage control means substantially overwrites the source file when the compressed audio signal is stored in the memory. 10. An undo buffer section is provided, and the storage control means temporarily stores the source file in the undo buffer section and erases the source file when storing the compressed audio signal in the memory. 9. The portable mixing recording device according to claim 8. 11. A memory for storing a compressed digital audio signal including a source file formed by the compressed digital audio signal, an input conversion unit for inputting an analog audio signal and converting it into a digital audio signal, and the input conversion. First effect imparting means for imparting a first kind of effect to the digital audio signal input and converted by means, decoding means for reading the source file stored in the memory and expanding and converting the source file into a digital audio signal, 1 mixing means for mixing the digital audio signal to which the first kind of effect is applied by the effect applying means and the digital audio signal expanded and converted by the decoding means, and the digital audio signal mixed by the mixing means to the digital audio signal A second effect imparting hand that imparts a second kind of effect different from one kind If, portable mixing recording apparatus characterized by a digital audio signal second type of effect it has been applied by the second effect imparting means and output means for outputting to the outside of the apparatus. 12. A program for causing a computer to realize a control method of a portable mixing recording device, comprising: an input conversion procedure for inputting an analog audio signal and converting it into a digital audio signal; and inputting and converting according to the input conversion procedure. A first level adjustment procedure for adjusting the level of the compressed digital audio signal, and reading the source file stored in the memory for storing the compressed digital audio signal containing the source file formed by the compressed digital audio signal to read the digital audio A decoding procedure for expanding and converting the signal into a signal, a second level adjusting procedure for adjusting the level of the digital audio signal expanded and converted by the decoding procedure, a digital audio signal whose level is adjusted by the first level adjusting procedure, and the first Digital sound whose level has been adjusted by the two-level adjustment procedure A mixing procedure for mixing a signal, an encoding procedure for compressing and converting a digital audio signal mixed by the mixing procedure into a compressed audio signal, and a storage control for storing the compressed audio signal compression-converted by the encoding procedure in the memory A program that causes a computer to perform steps and. 13. A program for causing a computer to realize a control method of a portable mixing recording device, comprising: an input conversion procedure for inputting an analog audio signal and converting it into a digital audio signal; and inputting and converting according to the input conversion procedure. And a source file stored in a memory for storing a compressed digital audio signal including a source file formed by the compressed digital audio signal. A decoding procedure for reading out and expanding and converting into a digital audio signal, and a mixing procedure for mixing the digital audio signal to which the first type effect is applied by the first effect applying procedure and the digital audio signal expanded and converted by the decoding procedure. And the digital mixed by the mixing procedure A second effect imparting procedure for imparting a second type effect different from the first type to the voice signal, and a digital audio signal to which a second type effect is imparted by the second effect imparting procedure are applied to the device. A program that causes a computer to execute an output procedure to be output to the outside.