Detecting vibrato bar technique for string instruments

Patent metadata

Field	Value
Publication number	US-10984768-B2
Application number	US-201615344145-A
Country	US
Kind code	B2
Filing date	Nov 4, 2016
Priority date	Nov 4, 2016
Publication date	Apr 20, 2021
Grant date	Apr 20, 2021

Abstract

Detecting vibrato bar technique for a string instrument can include analyzing, using a processor, a note signal of the string instrument to detect a selected instrumental technique from a plurality of instrumental techniques, analyzing, using the processor, a noise signal of the string instrument to detect a change in frequency of the noise signal, and generating, using the processor, a vibrato bar event responsive to detecting the selected instrumental technique and the change in frequency of the noise signal.

First claim

What is claimed is:

1. A method of detecting vibrato bar technique, comprising:
analyzing, using a processor, a note signal of a string instrument to detect a selected instrumental technique from a plurality of instrumental techniques;
analyzing, using the processor, a noise signal of the string instrument to detect a change in frequency of the noise signal; and
generating, using the processor, a vibrato bar event responsive to detecting the selected instrumental technique and the change in frequency of the noise signal.

2. The method of claim 1 , wherein the selected instrumental technique involves a change in frequency of the note signal.

3. The method of claim 1 , wherein the note signal and the noise signal are analyzed for a same time interval.

4. The method of claim 1 , further comprising:
determining a direction of movement of a vibrato bar based upon a direction of change in frequency of at least one of the note signal or the noise signal.

5. The method of claim 1 , wherein the selected instrumental technique is a bend or a release.

6. The method of claim 1 , further comprising:
storing the noise signal in a memory for analysis.

7. The method of claim 6 , wherein the analyzing the noise signal comprises:
recalling the noise signal for a same time interval as the note signal; and
analyzing the noise signal for the change in frequency during the same time interval.

8. The method of claim 1 , wherein the noise signal includes a plurality of noise signals, wherein each noise signal of the plurality of noise signals is for a different string of the string instrument.

9. The method of claim 1 , further comprising:
detecting the note signal and the noise signal from a plurality of received signals.

10. The method of claim 1 , wherein the note signal is for a first string of the string instrument sounding a note and the noise signal is for a second string of the string instrument not sounding a note.

11. A method of detecting vibrato bar technique, comprising:
detecting, using a processor, a note signal and a noise signal from a plurality of signals from a string instrument;
analyzing, using the processor, a time interval of the note signal to detect an instrumental technique involving a change in frequency of the note signal occurring within the time interval;
analyzing, in response to detecting the instrumental technique, and using the processor, the noise signal for the time interval to detect a change in frequency of the noise signal; and
generating, using the processor, a vibrato bar event in response to a detection of the instrumental technique and the change in frequency of the noise signal.

12. A system for detecting vibrato bar technique, comprising:
a processor configured to:
analyze a note signal of a string instrument to detect a selected instrumental technique from a plurality of instrumental techniques;
analyze a noise signal of the string instrument to detect a change in frequency of the noise signal; and
generate a vibrato bar event responsive to detecting the selected instrumental technique and the change in frequency of the noise signal.

13. The system of claim 12 , wherein the selected instrumental technique involves a change in frequency of the note signal.

14. The system of claim 12 , wherein the note signal and the noise signal are analyzed for a same time interval.

15. The system of claim 12 , wherein the processor is further configured to:
determine a direction of movement of a vibrato bar based upon a direction of change in frequency of at least one of the note signal or the noise signal.

16. The system of claim 12 , wherein the selected instrumental technique is a bend or a release.

17. The system of claim 12 , wherein the processor is further configured to:
store the noise signal in a memory for analysis.

18. The system of claim 17 , wherein the processor is configured to recall the noise signal for a same time interval as the note signal and analyze the noise signal for the change in frequency during the same time interval.

19. The system of claim 12 , wherein the noise signal includes a plurality of noise signals, wherein each noise signal of the plurality of noise signals is for a different string of the string instrument.

20. The system of claim 12 , wherein the processor is further configured to:
detect the note signal and the noise signal from a plurality of received signals.

21. The system of claim 12 , wherein the note signal is for a first string of the string instrument sounding a note and the noise signal is for a second string of the string instrument not sounding a note.

22. A system for detecting vibrato bar technique, comprising:
a processor configured to:
determine a note signal and a noise signal from a plurality of signals from a string instrument;
analyze a time interval of the note signal to detect an instrumental technique involving a change in frequency of the note signal occurring within the time interval;
analyze, in response to detecting the instrumental technique, the noise signal for the time interval to detect a change in frequency of the noise signal; and
generate a vibrato bar event in response to a detection of the instrumental technique and the change in frequency of the noise signal.

23. A computer program product for detecting vibrato bar technique, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to:
analyze, using the processor, a note signal of a string instrument to detect a selected instrumental technique from a plurality of instrumental techniques;
analyze, using the processor, a noise signal of the string instrument to detect a change in frequency of the noise signal; and
generate, using the processor, a vibrato bar event responsive to detecting the selected instrumental technique and the change in frequency of the noise signal.

24. The computer program product of claim 23 , wherein the selected instrumental technique involves a change in frequency of the note signal.

25. The computer program product of claim 23 , wherein the note signal and the noise signal are analyzed for a same time interval.

Assignees

• IBM

Inventors

• Carnevale Giulia
• Gianfico Marco
• Ragusa Ciro
• Ragusa Roberto

Classifications

• G10H2210/066

  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 title

• G10G3/04 Primary

  using electrical means · CPC title

• G10H2210/086

  for transcription of raw audio or music data to a displayed or printed staff representation or to displayable MIDI-like note-oriented data, e.g. in pianoroll format · CPC title

• G10H1/00

  Details of electrophonic musical instruments · CPC title

• G10H2210/211

  Pitch vibrato, i.e. repetitive and smooth variation in pitch, e.g. as obtainable with a whammy bar or tremolo arm on a guitar · CPC title