Device and method for analyzing and representing sound signals in the musical notation

• US 7,096,186 B2
• Filed: 08/10/1999
• Issued: 08/22/2006
• Est. Priority Date: 09/01/1998
• Status: Expired due to Fees

• Current Assignee: Yamaha Corporation
• Original Assignee: Yamaha Corporation
• Inventors: Funaki, Tomoyuki
• Primary Examiner(s): CHAWAN, VIJAY B
• Application Number:
  US09/371,760
• Publication Number:
  US 20020069050A1
• Time in Patent Office: 2,569 Days
• Field of Search: 704/207, 704/205, 704/275, 704/276, 704/231, 704500-504, 704/278, 704/201, 844/53, 844/54, 844/61, 846/12, 847/38, 847/26, 846/03, 846/26, 846/29, 846/27, 381/119, 381/61
• US Class Current: 704/278
• CPC Class Codes: G10H 1/0008 Associated control or indicating means
• CPC Class Codes: G10H 2210/066 for pitch analysis as part of wider processing for musical purposes, e.g. transcription, musical performance evaluation; Pitch recognition, e.g. in polyphonic sounds; Estimation or use of missing fundamental
• CPC Class Codes: G10H 2210/331 Note pitch correction, i.e. modifying a note pitch or replacing it by the closest one in a given scale

Abstract

Sound signal is received which contains sound characteristics to be represented in musical notation. The characteristics, such as a volume level of the sound signal, are extracted out of the received sound signal, and various parameters for use in subsequent analysis of the sound signal are set in accordance with the extracted characteristics. Also, a desired scale determining condition is set by a user. Pitch of the sound signal is determined using the thus-set parameters. The determined pitch is rounded to any one of scale notes, corresponding to the user-set scale determining condition. Also, a given unit note length is set as a predetermined criterion or reference for determining a note length, and a length of the scale note determined from the received sound signal is determined using the thus-set unit note length as a minimum determination unit, i.e., with an accuracy of the unit note length.

Claims

1. A sound signal analyzing device comprising:

an input section that receives sound signals to be analyzed;

a characteristic extraction section that extracts a volume level of a sound signal as it is received by said input section;

a setting section that sets various parameters for use in subsequent analysis of sound signals received by said input section in accordance with the volume level of the sound signal extracted by said characteristic extraction section, including at least a threshold value; and

a display section that visually displays a current value of the volume level and the threshold value determined by an extracted value of the volume level in accordance with a predetermined criterion.

2. A sound signal analyzing device as recited in claim 1 wherein said setting section includes an operator operable by a user, and said setting section, in response to operation of the operator by the user, confirms the volume level of the sound signal displayed by said display section and thereby sets the threshold value.

3. A sound signal analyzing device comprising:

an input section that receives sound signals to be analyzed;

a characteristic extraction section that extracts a pitch of a sound signal as it is received by said input section;

a designating section that, based on the pitch of the sound signal, designates at least one of an upper and lower pitch limit as a pitch limit characteristic;

a setting section that sets various parameters for use in subsequent analysis of sound signals received by said input section in accordance with the pitch limit characteristic, including at least a filter characteristic; and

a display section that visually displays the pitch limit characteristic by displaying an image indicative of at least one of the upper and lower pitch limits,

wherein a user can vary the pitch limit characteristic by manipulating the image such that the setting section sets the various parameters in accordance with the varied pitch limit characteristic.

4. A sound signal analyzing method comprising the steps of:

receiving sound signals to be analyzed;

extracting a volume level of the sound signal as it is received by said step of receiving;

setting various parameters for use in subsequent analysis of sound signals received by said step of receiving in accordance with the volume level of the sound signal extracted by said step of extracting, including at least a threshold value; and

displaying a current value of the volume level and the threshold value determined by an extracted value of the volume level in accordance with a predetermined criterion.

5. A sound signal analyzing method comprising the steps of:

receiving sound signals to be analyzed;

extracting a pitch of a sound signal as it is received by said step of receiving;

designating, based on the pitch of the sound signal, at least one of an upper and lower pitch limit as a pitch limit characteristic;

setting various parameters for use in subsequent analysis of sound signals received by said step of receiving in accordance with the pitch limit characteristic, including at least a filter characteristic; and

displaying the pitch limit characteristic by displaying an image indicative of at least one of the upper and lower pitch limits,

wherein a user can vary the pitch limit characteristic by manipulating the image to set the various parameters in accordance with the varied pitch limit characteristic.

6. A machine-readable medium containing a group of instructions of a sound signal analyzing program for execution by a computer, said sound signal analyzing program causing the computer to execute the steps of:

receiving sound signals to be analyzed;

extracting a volume level of a sound signal as it is received by said step of receiving;

setting various parameters for use in subsequent analysis of sound signals received by said step of receiving in accordance with the volume level of the sound signal extracted by said step of extracting, including at least a threshold value; and

displaying a current value of the volume level and the threshold value determined by an extracted value of the volume level in accordance with a predetermined criterion.

7. A machine-readable medium containing a group of instructions of a sound signal analyzing program for execution by a computer, said sound signal analyzing program causing the computer to execute the steps of:

receiving sound signals to be analyzed;

extracting a pitch of the sound signal as it is received by said step of receiving;

designating, based on the pitch of the sound signal, at least one of an upper and lower pitch limit as a pitch limit characteristic;

setting various parameters for use in subsequent analysis of sound signals received by said step of receiving in accordance with the pitch limit characteristic, including at least a filter characteristic; and

displaying the pitch limit characteristic by displaying an image indicative of at least one of the upper and lower pitch limits,

wherein a user vary the pitch limit characteristic by manipulating the image to set the various parameters in accordance with the varied pitch limit characteristic.

8. A sound signal analyzing device comprising:

an input section that receives sound signals to be analyzed;

a characteristic extraction section that extracts a characteristic of a sound signal as it is received by said input section;

a setting section that sets at least one parameter for use in subsequent analysis of sound signals received by said input section in accordance with the extracted characteristic of the sound signal;

a detection section for detecting a pitch of a subsequent sound signal in accordance with the at least one parameter;

an allocation section for allocating the detected pitch to a predetermined scale note; and

a musical notation section for providing musical notation in accordance with the allocated pitch.

9. The sound signal analyzing device of claim 8 wherein said characteristic is a volume level of the sound signal and wherein said at least one parameter is a threshold value.

10. The sound signal analyzing device of claim 8 wherein said characteristic is at least one of an upper and lower pitch limit of the sound signal and wherein said at least one parameter is a filter characteristic.

11. A sound signal analyzing method comprising:

receiving sound signals to be analyzed;

extracting a characteristic of a sound signal as it is received;

setting at least one parameter for use in subsequent analysis of sound signals received in accordance with the extracted characteristic of the sound signal;

detecting a pitch of a subsequent sound signal in accordance with the at least one parameter;

allocating the detected pitch to a predetermined scale note; and

providing musical notation in accordance with the allocated pitch.

12. A machine-readable medium containing a group of instructions of a sound signal analyzing program for execution by a computer, said sound signal analyzing program comprising comprising:

receiving sound signals to be analyzed;

extracting a characteristic of a sound signal as it is received;

setting at least one parameter for use in subsequent analysis of sound signals received in accordance with the extracted characteristic of the sound signal;

detecting a pitch of a subsequent sound signal in accordance with the at least one parameter;

allocating the detected pitch to a predetermined scale note; and

providing musical notation in accordance with the allocated pitch.