Performance information analyzer and chord detection device associated therewith

• US RE38,477 E1
• Filed: 07/23/1998
• Issued: 03/30/2004
• Est. Priority Date: 04/09/1993
• Status: Expired due to Term

• Current Assignee: Yamaha Corporation
• Original Assignee: Yamaha Corporation
• Inventors: Tohgi, Yutaka
• Primary Examiner(s): Witkowski, Stanley J.
• Application Number:
  US09/120,957
• Time in Patent Office: 2,077 Days
• Field of Search: 846/09--14, 846/34--38, 846/49--52, 846/66--69, 844/53, 844/54, 844/62, 844/77.R, 844/78, 84D/IG.22
• US Class Current: 84/650
• CPC Class Codes: G10H 1/383 Chord detection and/or recognition, e.g. for correction, or automatic bass generation
• CPC Class Codes: G10H 2210/616 Chord seventh, major or minor

Abstract

A performance information analyzer wherein one of tone pitch information data applied thereto in response to progress of performance of a musical tune is analyzed into one of plural performance parts on a basis of a difference in tone pitch between the one of the tone pitch information data and a reference tone pitch information data previously assigned to a predetermined part of the plural performance parts during prior analysis of the tone pitch information and the other tone pitch information data are analyzed into the other performance parts on a basis of a difference in tone pitch between the analyzed tone pitch information data and each of the other tone pitch information data.

Claims

1. A performance information analyzer, comprising:

input means provided to be applied with a plurality of tone pitch information data in response to progress of performance of a musical tune;

detection means for detecting the number of the tone pitch information data simultaneously applied to said input means;

analysis means for analyzing the tone pitch information data into a plurality of performance parts in accordance with the detected number of the tone pitch information data, wherein the plurality of performance parts comprise at least one of a bass part, a bass chord part, a melody chord part and a melody part, said analysis means being adapted to analyze one of the tone pitch formation data into one or the performance parts based on a difference in tone pitch between the one of the tone pitch information data and reference tone pitch information data previously assigned to a predetermined part of the performance parts during prior analysis of the tone pitch information data and to analyze the other tone pitch information data into the other performance parts based on a difference in tone pitch between the analyzed tone pitch information data and each of the other tone pitch information data.

2. A performance information analyzer as recited in claim 1, wherein said analysis means includes means for substituting the analyzed tone pitch information data for the reference tone pitch information data in response to progress of performance or the musical tune.

3. A performance information analyzer as recited in claim 1, wherein said analysis means includes first means for analyzing one of the tone pitch information data into one of plural performance parts based on a predetermined tone pitch and a difference in tone pitch between the one of the tone pitch information data and reference tone pitch information data previously assigned to a predetermined part of the plural performance parts if a timing of the tone pitch information data is a measure head and second means for analyzing one of the tone pitch information data into one of the plural performance parts based on the difference in tone pitch if the timing of the tone pitch information is not the measure head.

4. A performance information analyzer as recited in claim 1, wherein said analysis means is adapted for use in combination with a chord detection device for detecting a chord based on the analyzed performance parts.

6. A performance information analyzer as recited in claim 1, wherein the reference tone pitch information data is successively assigned to the bass part in response to progress of performance of the musical tune.

7. A performance information analyzer as recited in claim 6, wherein said analysis means includes means for assigning the first tone pitch information data or one of the second tone pitch information data to the bass part or the melody part if there is not any reference tone pitch information data at an initial stage of performance of the musical tune.

5. A performance information analyzer, comprising:

input means provided to be applied with first tone pitch information data produced by depression of a single key on a keyboard or second tone pitch information data produced by simultaneous depression of plural keys on the keyboard in response to progress of performance of a musical tune;

first analysis means for analyzing the first tone pitch information data into one of plural performance parts, wherein the plurality of performance parts comprise at least one of a bass part, a bass chord part, a melody chord part and a melody part, based on a difference in tone pitch between the first tone pitch information and a reference tone pitch information data previously assigned to a predetermined part of the plural performance parts during prior analysis of the first or second tone pitch information data; and

second analysis means for analyzing one of the second tone pitch information data into one of the plural performance parts, wherein the plurality of performance parts comprise at least one of a bass part, a bass chord part, a melody chord part and a melody part, based on a difference in tone pitch between the one of the second tone pitch information data and the reference tone pitch information data and for analyzing the other second tone pitch information data into the other performance parts based on a difference in tone pitch between the analyzed tone pitch information data and each or the other second tone pitch information data.

8. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

9. A performance information analyzer as claimed in claim 8, wherein

said analyzing algorithm includes a step of comparing the tone pitch under analysis with the data of a previous analysis result stored in said analysis result storing means for determining a belonging performance part of the tone pitch under analysis, and further includes a step of re-analyzing the previously determined performance part of a stored previously analyzed tone pitch to newly determine a belonging performance part for said tone pitch thereby rewriting the stored data in said analysis result storing means.

10. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

24. A performance information analyzer as claimed in one of claims 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22 and 23, wherein:

25. A performance information analyzer as claimed in one of claims 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20 and 21, further comprising:

11. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

12. A performance information analyzer as claimed in claim 11, wherein

62. A performance information analyzer as claimed in one of claims 11, 12, 19 and 20, wherein:

13. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

14. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

15. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

16. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to comprising;

17. A performance information analyzer as claimed in claim 16, wherein

said analyzing algorithm includes a step of comparing the tone pitch under analysis with the data of a previous analysis result stored in said analysis result storing means for determining a belonging performance part of the tone pitch under analysis, and further includes a step of re-analyzing the previously determined performance part of a stored previously analyzed tone pitch to newly determine a belonging performance part for said tone pitch thereby rewriting the stored data in said analysis result storing means.

18. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising;

19. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

20. A performance information analyzer as claimed in claim 19, wherein

21. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

22. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

23. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

26. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

27. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to comprising:

28. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

29. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

30. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

31. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones ill the progression belongs to, comprising:

32. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

33. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

34. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

35. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

36. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

37. A performance information analyzer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising:

38. A machine readable medium for use in a system of a data processing type comprising a computer, for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, said medium containing program instructions executable by said computer for executing:

39. A machine readable medium for use in a system of a data processing type comprising a computer, for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, said medium containing program instructions executable by said computer for executing:

40. A machine readable medium for use in a system of a data processing type comprising a computer, for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, said medium containing program instructions executable by said computer for executing:

41. A machine readable medium for use in a system of a data processing type comprising a computer, for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, said medium containing program instructions executable by said computer for executing:

42. A machine readable medium for use in a system of a data processing type comprising a computer, for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, said medium containing program instructions executable by said computer for executing:

43. A machine readable medium for use in a system of a data processing type comprising a computer, for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, said medium containing program instructions executable by said computer for executing:

44. A machine readable medium for use in a system of a data processing type comprising a computer, for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, said medium containing program instructions executable by said computer for executing:

45. A machine readable medium for use in a system of a data processing type comprising a computer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to said medium containing program instructions executable by said computer for executing:

46. A machine readable medium for use in a system of a data processing type comprising a computer for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, said medium containing program instructions executable by said computer for executing:

47. A machine readable medium for use in a system of a data processing type comprising a computer, for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to said medium containing program instructions executable by said computer for executing:

48. A machine readable medium for use in a system of a data processing type comprising a computer, for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, said medium containing program instructions executable by said computer for executing:

49. A machine readable medium for use in a system of a data processing type comprising a computers for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, said medium containing program instructions executable by said computer for executing:

50. A method for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising the steps of:

51. A method for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising the steps of:

52. A method for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising the steps of:

53. A method for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising the steps of:

54. A method for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising the steps of:

55. A method for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising the steps of:

56. A method for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising the steps of:

57. A method for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to comprising the steps of:

58. A method for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to comprising the steps of:

59. A method for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising the steps of:

60. A method for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising the steps of:

61. A method for analyzing tone pitch information representing tones which constitute a progression of a musical performance to determine which one of a plurality of performance parts each of the tones in the progression belongs to, comprising the steps of: