Methods, systems, and media for performing visualized quantitative vibrato analysis

• US 8,766,080 B2
• Filed: 03/14/2013
• Issued: 07/01/2014
• Est. Priority Date: 06/22/2012
• Status: Active Grant

• Current Assignee: Artstotao Incorporated
• Original Assignee: Artstotao Incorporated
• Inventors: Ho, Tracy Kwei-Liang
• Primary Examiner(s): UHLIR, CHRISTOPHER J
• Application Number:
  US13/827,064
• Publication Number:
  US 20130340595A1
• Time in Patent Office: 474 Days
• Field of Search: 846/15
• US Class Current: 84/615
• CPC Class Codes: G10H 1/0008 Associated control or indicating means
• CPC Class Codes: G10H 1/02 Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
• 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 2210/201 Vibrato, i.e. rapid, repetitive and smooth variation of amplitude, pitch or timbre within a note or chord
• CPC Class Codes: G10H 2220/116 for graphical editing of sound parameters or waveforms, e.g. by graphical interactive control of timbre, partials or envelope

Abstract

Methods, systems, and media for performing visualized quantitative vibrato analysis are provided. In some embodiments, a method for analyzing musical vibrato in an audio file is provided, the method comprising: receiving, using a hardware processor, a target note from a user; receiving, using the hardware processor, a time-domain signal representing a piece of music comprising a plurality of notes, wherein the plurality of notes include the target note and the target note is played with a vibrato effect; converting, using the hardware processor, the time-domain signal to a frequency-domain signal; determining, using the hardware processor, a plurality of changes in frequency and intensity of the vibrato effect over time based on the frequency-domain signal; determining, using the hardware processor, a target frequency corresponding to the target note; and displaying, on a display, data about the changes in frequency and intensity of the vibrato effect over time and data about the target frequency.

Claims

1. A method for analyzing musical vibrato in an audio file, comprising:

receiving, using a hardware processor, a target note from a user;

receiving, using the hardware processor, a time-domain signal representing a piece of music comprising a plurality of notes, wherein the plurality of notes include the target note and the target note is played with a vibrato effect having a frequency;

converting, using the hardware processor, the time-domain signal to a frequency-domain signal;

determining, using the hardware processor, a plurality of changes in frequency and intensity of the vibrato effect over time based on the frequency-domain signal;

determining, using the hardware processor, a target frequency corresponding to the target note;

displaying, on a display, data about the changes in frequency and intensity of the vibrato effect over time and data about the target frequency;

determining, using the hardware processor, a first frequency corresponding to a first note and a second frequency corresponding to a second note, wherein the first note is played before the target note and the second note is played after the target note;

determining, using the hardware processor, a first time period during which the vibrato effect is played;

determining, using the hardware processor, a second time period during which the frequency of the vibrato effect matches the target frequency;

calculating, using the hardware processor, a first ratio of the second time period to the first time period;

determining, using the hardware processor, a third time period during which the frequency of the vibrato effect is greater than the target frequency; and

calculating, using the hardware processor, a second ratio of the third time period to the first time period.

2. The method of claim 1, further comprising:

displaying, on the display, at least one of the first ratio and the second ratio.

3. A system for analyzing musical vibrato in an audio file, comprising:

at least one hardware processor that is configured to;

receive a target note from a user;

receive a time-domain signal representing a piece of music comprising a plurality of notes, wherein the plurality of notes include the target note and the target note is played with a vibrato effect that has a frequency;

convert the time-domain signal to a frequency-domain signal;

determine a plurality of changes in frequency and intensity of the vibrato effect over time based on the frequency-domain signal;

determine a target frequency corresponding to the target note;

determine a first frequency corresponding to a first note and a second frequency corresponding to a second note, wherein the first note is played before the target note and the second note is played after the target note;

determine a first time period during which the vibrato effect is played;

determine a second time period during which the frequency of the vibrato effect matches the target frequency;

calculate a first ratio of the second time period to the first time period;

determine a third time period during which the frequency of the vibrato effect is greater than the target frequency; and

calculate a second ratio of the third time period to the first time period; and

at least one display that is configured to;

display data about the changes in frequency and intensity of the vibrato effect over time and data about the target frequency.

4. The system of claim 3, wherein the at least one display is further configured to display at least one of the first ratio and the second ratio.

5. A non-transitory computer readable medium containing computer-executable instructions that, when executed by a processor, cause the processor to perform a method for analyzing musical vibrato in an audio file, comprising:

receiving a target note from a user;

receiving a time-domain signal representing a piece of music comprising a plurality of notes, wherein the plurality of notes include the target note and the target note is played with a vibrato effect having a frequency;

converting the time-domain signal to a frequency-domain signal;

determining a plurality of changes in frequency and intensity of the vibrato effect over time based on the frequency-domain signal;

determining a target frequency corresponding to the target note;

displaying data about the changes in frequency and intensity of the vibrato effect over time and data about the target frequency;

determining a first frequency corresponding to a first note and a second frequency corresponding to a second note, wherein the first note is played before the target note and the second note is played after the target note;

determining a first time period during which the vibrato effect is played;

determining a second time period during which the frequency of the vibrato effect matches the target frequency;

calculating a first ratio of the second time period to the first time period;

determining a third time period during which the frequency of the vibrato effect is greater than the target frequency; and

calculating a second ratio of the third time period to the first time period.

6. The non-transitory computer readable medium of claim 5, wherein the method further comprises:

displaying at least one of the first ratio and the second ratio.