Music – Accessories – Teaching devices
Reexamination Certificate
2000-05-08
2001-12-04
Witkowski, Stanley J. (Department: 2837)
Music
Accessories
Teaching devices
C434S30700R
Reexamination Certificate
active
06326536
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a scoring device and method for a karaoke system, and in particular, to a low-cost and simply structured scoring device and method for a karaoke system, which can impartially score a karaoke singer's singing voice.
2. Description of the Related Art
In a singing competition, participants are usually ranked by professional graders. However, the training of professional graders are time-consuming, and preferences of different graders can be controversial; therefore, an computer provided with a scoring device is sometimes used to replace the professional graders. The scoring device is used to detect voice-related parameters of an input singing voice, perform complicated arithmetic operations on these parameters to analyze tone, tempo and timbre of the input singing voice, and impartially provide a score based on the analyzed results.
Nowadays, the scoring device is often structured with a built-in DSP chip to perform the corresponding arithmetic operations. However, the DSP chip is expensive and uneconomical for home-used karaoke systems, so a lower-cost and simpler structured scoring device which can still score a karaoke singer's singing voice is desirable.
SUMMARY OF THE INVENTION
Accordingly, the present invention has provided a scoring device for a karaoke system. The scoring device includes a first detector for the original singer, a second detector for the karaoke singer, and a processor. The first detector is provided to detect the volume of the original singer's singing voice. The second detector is provided to detect the volume of the karaoke singer's singing voice. The processor is provided to compare the volumes of the original singer's singing voice and the karaoke singer's singing voice, and provide a score for the karaoke singer's singing voice based on the compared results.
In the scoring device of the present invention, the first and second detector can each include a low-pass filter and a level detector. The low-pass filter is provided to screen out high-frequency noise of the original singer's singing voice and the karaoke singer's singing voice, respectively. The level detector is provided to compare the volumes of the filtered singing voice with a predetermined value to generate a first digital pulse sequence and a second digital pulse sequence, respectively.
Further, the scoring device of the present invention can further include a channel selector which is provided to select input channel from the L/R channels of the karaoke system through which the original singer's singing voice is input. Moreover, the scoring device of the present invention can further includes a microphone through which the karaoke singer's singing voice is inputted. Moreover, the scoring device of the present invention can further include rectifiers for rectifying the first digital pulse sequence and the second digital pulse sequence. Moreover, the scoring device of the present invention can further include a display for showing the score and corresponding comments.
Further, in the scoring device of the present invention, the processor can include a sampling means, a comparing means and an arithmetic means. The sampling means is provided to sample the volumes of the original singer's singing voice and the karaoke singer's singing voice. The comparing means is provided to compare the sampled volumes of the original singer's singing voice and the karaoke singer's singing voice. The arithmetic means is provided to calculate a score for the karaoke singer's singing voice based on the similarity between the sampled volumes of the original singer's singing voice and the karaoke singer's singing voice.
In addition, the present invention also provides a scoring method for a karaoke system. First, the volume of an original singer's singing voice and the volume of a karaoke singer's singing voice are detected. Then, the volumes of the original singer's singing voice and the karaoke singer's singing voice are compared, and a score and corresponding comments for the karaoke singer's singing voice is provided based on the compared result and output through a display panel.
In this scoring method, the original singer's singing voice and the karaoke singer's singing voice are filtered to screen out high-frequency noise before the volume is detected.
Further, the comparing step can include the following steps. First, sample the volumes of the original singer's singing voice and the karaoke singer's singing voice. Then, compare the sampled volumes of the original singer's singing voice and the karaoke singer's singing voice, and calculate the similarity between the sampled volumes of the original singer's singing voice and the karaoke singer's singing voice based on the accumulated similarity.
REFERENCES:
patent: 5804752 (1998-09-01), Sone et al.
patent: 5906494 (1999-05-01), Ogawa et al.
Ladas & Parry
Winbond Electroncis Corp.
Witkowski Stanley J.
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