JPH04135795U - digital audio equipment - Google Patents

Abstract

(57) [Summary] [Purpose] Identify the performance source using TOC information, recall the memory in which the presence effect parameters adapted to the identified performance source are programmed, load it into DASP, and automatically load it into DASP when playing this performance source. The purpose is to add a presence effect. [Structure] Performance source table of content (TO
C) It has a function to identify the performance source from the information, and a digital audio signal processing circuit (DASP) is provided at the output of the digital signal processor (DSP).
This system is configured to add a presence effect to the performance source identified above using ASP.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is a digital audio device that adds presence effects to music playback. Automatically adds a presence effect that specifically matches the recorded performance source and plays it back. The present invention relates to a digital audio device suitable for playing live music.

0002

[Prior art]

Many conventional digital audio devices are shown in the block diagrams of Figures 3 and 4. It was provided in many ways. Figure 3 shows the source side equipment of the digital audio device, and Figure 4 shows the digital audio equipment. This is a receiving device for digital audio signals.

0003 In the figure, 1 is a music playback disc, 2 is a pickup, and 3 is a pickup A digital signal processor (hereinafter referred to as 5 is a digital filter, 6 is a converter that converts the digital signal into an analog signal. 7 is a low-pass filter, 8 is a digital output terminal, 9 is an analog converter circuit, and 7 is a low-pass filter. Analog output terminal 10 is connected to a microcomputer (hereinafter simply referred to as microcomputer). 11 is the microcomputer, 12 is the operation key to operate the microcomputer 11, and , In the receiving device shown in Figure 4, 20 is the digital signal input terminal, and 21 is the input data terminal. A data demodulation circuit demodulates the digital signal, 22 is the demodulated digital audio Signal processing circuits (hereinafter referred to as DASP) that process signals, 23 to 30 are the software shown in Figure 3. 27 has the same configuration as the source side equipment, and 27 is the audio output via amplifier 26. output terminal, 31 is analog signal input terminal, 32 converts analog signal to digital signal The A/D conversion circuit 33 converts the signal from the data demodulation circuit 21 and the signal from the A/D conversion circuit 32. This is a switching circuit that switches between signals.

0004 The digital audio device configured in this way uses the DASP22 in the receiving device. Input data from operation key 12 and provide presence function via microcomputer 11 can be done.

[0005] If the user wants to change the presence effect depending on the music playback preference, the digital Parameters such as digital audio signal delay time and reflection count can be set using operation key 12. By setting the value, the user can change it according to his/her preference. Also, this pa The parameters are recorded in memory 10 in advance and called up according to the number of songs to be played. A presence effect can also be added during playback.

[0006] Furthermore, it is difficult to obtain an appropriate presence effect on the manufacturer side of digital audio equipment. Prepare and record parameters in memory 10 so that the user can adjust them according to the performance source. It can also be recalled from memory 10 and used.

[0007] In this way, the digital audio device with the presence function allows the user to It was possible to listen to music with a flexible presence effect added during playback. more di Regarding the presence function using DASP22 installed on the receiving side equipment of digital audio equipment. As explained above, some CD players and other equipment have surround sound functions on the source side. However, the operations for setting parameters are the same as above.

[0008]

[Problem that the idea aims to solve]

However, with the above-mentioned conventional digital audio devices, users can Set parameters that match the song you are playing, or use preset parameters. Record it in memory 10, recall it from memory 10 for each performance source, set it, and listen to the music. It was necessary to add a playback presence effect.

[0009] As mentioned above, parameters are set for each performance source, so there are many performance sources. In some cases, setting operations are cumbersome, and the necessary parameters of the performance source are stored in a memo. It had the disadvantage that it was difficult to use because it was unclear whether it was recorded on the RI10.

0010 This idea was made in view of the above points, and its purpose is eliminates the drawbacks of the conventional example, and has a function to identify the performance source and a DASP installed in the DSP output. It is possible to program and add a presence effect specific to the performance source. The purpose of the present invention is to provide a digital audio device that uses

[0011]

[Means to solve the problem]

The digital audio device of this invention detects the performance source from the TOC information of the performance source. In a digital audio device that has a function that can identify A DASP is provided at the output of the DSP of the source side equipment of the digital audio device, and this DASP is used to It is configured to add a unique presence effect to the identified performance source. Ru.

0012 In addition, in the above digital audio device, the digital audio device Controls the data demodulation circuit and DASP of the receiving device to present the performance source identified above. A presence adding means is provided to add a presence effect.

[0013]

[Effect]

According to this invention, for example, the DSP output of the source side equipment of digital audio equipment DASP is installed in the input source, and the T A performance source identification function that identifies the performance source based on OC information, and Parameter program function to realize presence function for performance sources It has the following.

[0014] The performance source identified by this performance source identification function is program the presence function parameters that best suit the user's preferences. By recording in memory, the playback music program is automatically set when playing the disc source. It can be played back with a presence effect added.

[0015] In addition, based on the TOC information of the performance source, the playback order of the performance songs and the corresponding information for each performance song are added. Presence effects mentioned above by programming your favorite presence parameters It is also possible to automatically add and play the performance source set by the user.

[0016] In this way, by loading the parameters programmed into DASP, the presentation The operations for adding effect and playback of the performance songs are now easier, and the previous troublesome operations are now easier. There is no need for any complicated settings.

[0017]

【Example】

An embodiment of the digital audio device according to this invention is shown in FIGS. 1 and 2. explain. Note that the same parts as in the conventional example are given the same reference numerals, and the explanation thereof will be omitted.

[0018] Figure 1 is a block diagram of the source side equipment of a digital audio device, and Figure 2 is a block diagram of the source side equipment of a digital audio device. FIG. 2 is a block diagram of receiving side equipment of the digital audio device. In the figure, 4 is This is a DASP that adds a presence function, and plays digital signals from pickup 2. The signal is processed by DSP3, and digitalized by adding a presence function to DASP4. It is output to output terminal 9 via filter 5, D/A conversion circuit 6, and low-pass filter 7. It will be done.

[0019] Typically a digital audio source, e.g. a CD disc or a digital audio optical For academic video discs or DAT music tapes, the performance time and songs of the music source are Information such as the number of tracks (number of tracks) is included in the TOC information. This TOC information shows the performance time and You can identify each performance source by combining it with the number of songs, and use this identification function. Users can program their favorite songs or playback order of performance sources and store them in memory. 10, when you play a disc from now on, just set the disc and it will play automatically. You can play music according to the program.

[0020] Memory 10 is backed up, so even if the power is turned off, the above programmed data will be saved. Records in memory 10 are maintained.

[0021] Furthermore, using the performance source identification function of the TOC information above, the identified performance source Program and set the unique Presence function parameters appropriate for the above performance. The source identification function and presence function parameter programming functions are stored in memory 10. can be recorded.

[0022] In this way, the user can input their own desired parameters for each performance source in advance. If you press the button and record the presence function parameter program in memory 10, When playing, by setting the music source disc, the TOC information of the disc will be checked. It identifies the performance source from rack) and presence parameter are read from memory 10 and this parameter is loaded into DASP4 and adds the user's preferred presence effect to the performance song. be able to.

[0023] The presence parameters mentioned above are the reverberation components such as digital signal delay time and reflection count. In addition to the characteristic parameters, you can also set parameters that can change the frequency characteristics, for example. to create a presence effect that adapts to a wider range of user preferences. I can do it.

[0024] The above describes presence using DASP4 installed on the source side of digital audio equipment. Although I explained that effects should be added, it is not possible to use digital audio input other than the source device. It can also be applied to receiving devices with interface input, such as AV amplifiers. Ru.

[0025] Figure 2 shows the receiving device of the digital audio device, which receives the performance source from the TOC information above. It has a presence identification function and a parameter programming function for the presence function using DASP4. This is a block diagram of the receiving side equipment in which the microcomputer 11 is connected to the data demodulation circuit 21 and the DASP 4. It is configured to control the

[0026] Digital audio source equipment, such as CD players, DAT players, and LD players. For example, a digital signal that includes TOC information from the U channel, etc. The digital audio interface output is connected to the receiving side via an interface cable. When supplied to the device, the total playing time and total number of songs of the performance source can be read from this supplied signal. The presence function's parameter programming function A presence effect that adapts to the user's preference is applied to the performance source that is automatically identified. You can add fruits.

[0027] In this way, digital audio equipment can be Similarly, it has a performance source identification function and a presence function for this identified performance source. functions can be realized.

[0028]

[Effect of the idea]

As mentioned above, the digital audio device according to this invention uses DASP for the output of DSP. The performance source is identified by the TOC information recorded in the performance source. It has a performance source identification function and automatically programs the identified performance source. Load the programmed presence function parameters into DASP and present them in the performance song. Since the presence effect can be added, the user can use the presence function for each performance source. No need for troublesome operations such as inputting parameters, and your favorite presentation is automatically created. This has the effect that it is possible to obtain an impact effect.

[0029] In addition to setting parameters for each performance source, you can also set parameters for each performance song (track). Meters can also be configured and loaded into DASP at the same time and automatically as above. Therefore, in addition to the playback order according to the user's preference, the playback order that is most suitable for this performance source is It also has the advantage that it can be played back with a presence effect.

[0030] Furthermore, in system equipment such as AV amplifiers, this invention can be applied to data from the source side equipment. When applied to a receiving device that receives digital signal output, it has a presence function. allows you to set parameters for multiple source devices, making it more streamlined and easier to use. Another effect is that system equipment can be constructed.

[0031] Moreover, it has a simple structure and can be constructed at low cost. It has excellent features such as being easy to use.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a source-side device showing an embodiment of a digital audio device of the present invention.

FIG. 2 is a block diagram illustrating an embodiment of a receiving device.

FIG. 3 is a block diagram of source-side equipment of a conventional digital audio device.

FIG. 4 is a block diagram of a conventional receiving device.

[Explanation of symbols]

1 Disc source 2 Pickup for disc playback 3 Digital signal processor (DSP) 4 Digital audio signal arithmetic processing circuit (DASP) 5 Digital filter 6 D/A conversion circuit 7 Low pass filter 8 Digital audio signal output terminal 9 Analog audio signal output terminal 10 memory 11 Microcomputer (microcomputer) 12 operation keys 20 Digital audio signal input terminal 21 Data demodulation circuit

Claims (2)

[Scope of utility model registration request] Claim 1: In a digital audio device having a function of identifying a performance source from table of content (TOC) information of the performance source, a digital audio signal is transmitted to the output of a digital signal processor of a source side device of the digital audio device. 1. A digital audio device comprising a signal arithmetic processing circuit (DASP), the DASP adding a presence effect to the identified performance source. 2. The digital audio system according to claim 1, further comprising presence adding means for adding a presence effect to the identified performance source by controlling a data demodulation circuit and DASP of a receiving device of the digital audio device. audio equipment.