KR950009692A - Automatic scoring system of laser disc player (LDP) - Google Patents

Abstract

The present invention relates to an automatic scoring system for a laser disc player, and only the accompaniment and the audio signal or the accompaniment signal are recorded on the tape. When comparing the stored tape sound and microphone sound, the numerical comparison unit 13 compares only the strength of the sound, pitch, and tone of the three elements of the sound, and thus does not perform an accurate comparison. There was a problem that the score that does not correspond to the skill is scored.

The present invention compares the strength, pitch, and tone of the three elements of the sound with the singer's voice when the user sings a song to solve the conventional problems. This is applied to the image accompaniment device.

Description

Automatic scoring system of laser disc player (LDP)

Since this is an open matter, no full text was included.

2 is a block diagram of an automatic scoring system of the inventive laser disk player,

3 is a block diagram showing a sound intensity discriminating unit in the present invention automatic scoring system,

4 is a block diagram showing the structure of the present invention pitch discrimination unit.

Claims (5)

When the voice multiple laser disc player is played back, the voice multiple selection switching unit 21 for switching the analog signals R and L which are the voice signals and the digital signals R 'and L' is selected. An analog signal R including the accompaniment sound signal and the audio signal, a voice detector 25 for detecting only the voice signal from the digital signal R 'including only the accompaniment sound signal, and a voice for amplifying the detected voice signal. Amplification section 26, a microphone sound amplifying section 27 for re-amplifying the microphone sound amplified by the amplifying section 22 at the time of inputting the microphone sound, and a voice signal and a microphone sound amplified and output from the voice amplifying section 26; The amplification unit 27 removes the noise component amplified and output from the sound intensity detector 28 and the sound amplifier 26 that detects the strength and weakness of the sound based on the voice signal when the microphone sound is amplified. Unnecessary noise amplified and output from the voice BPF unit 29 and the microphone sound amplifier unit 27 A microphone sound BPF unit 30 for removing a component, the audio BPF unit 29, and the microphone sound BPF unit 30 detects a phase difference of the microphone sound signal based on the audio signal when the audio and microphone sound signals are output. A pitch detector 31, a tone detector 32 that detects whether a microphone sound frequency coincides with a voice signal on the basis of a voice signal, the tone intensity detector 28, a pitch detector 31, and a tone detector 32 An automatic scoring system for a laser disc player (LDP) comprising a scoring unit 33 for scoring a score corresponding to a detection signal output from the display unit, and a display unit 34 for displaying the score. The sound intensity detector 28 further includes: a voice envelope detector 35 for detecting a voice signal amplified and output from the voice amplifier 26, and a DC signal for outputting the detected voice signal to a DC level. A voice LPF unit 36, a microphone sound envelope detector 37 for detecting the microphone sound signal amplified and output from the microphone sound amplifier 27, and a microphone for converting and outputting the detected microphone sound signal to a DC level. The sound LPF unit 38, the differential amplifier unit 39 for amplifying the DC level converted from the voice LPF unit 36 and the microphone sound LPF unit 38, the amplified output DC level and the set reference voltage ( An automatic scoring system for a laser disc player (LDP), characterized by comprising a comparator 40 for comparing Vref1). The pitch detection unit 31 is a phase comparison unit 41 for comparing the phase difference between the audio signal output from the audio BPF unit 29 and the microphone sound signal output from the microphone sound BPF unit 30. An LPF unit 42 for converting and outputting the phase of the comparative output to a DC level, a comparator 43 for outputting an audio signal by comparing the phase output from the LPF unit 42 with a set reference voltage Vref2; An automatic scoring system for a laser disc player (LDP), characterized by comprising an inverter (44) for inverting and outputting the compared signal. The sound tone detector 32 includes: a voice frequency / voltage converter 45 for converting and outputting a DC level proportional to a voice frequency at the time of outputting a voice signal from the voice BPF unit 29, and a microphone sound BPF unit. A microphone sound frequency / voltage converter 46 for converting and outputting a DC level proportional to the microphone sound frequency when the microphone sound signal is output at 30, and a differential amplifier 47 for amplifying each of the output DC levels; And a comparator 48 for comparing the amplified output DC level with a set reference voltage Vref3, and an inverter 49 for inverting the compared output signal. Device. The method of claim 1, wherein the scoring unit 33 Automatic scoring system for laser disc player (LDP), characterized in that calculated as. ※ Note: It is to be disclosed based on the initial application.