Sound control device and method for uniformly shifting the phase of sound data

• US 5,521,330 A
• Filed: 04/08/1994
• Issued: 05/28/1996
• Est. Priority Date: 04/08/1993
• Status: Expired due to Fees

• Current Assignee: Kawai Musical Instruments Manufacturing Company Limited
• Original Assignee: Kawai Musical Instruments Manufacturing Company Limited
• Inventors: Kuwano, Koji
• Primary Examiner(s): Witkowski, Stanley J.
• Application Number:
  US08/224,774
• Time in Patent Office: 781 Days
• Field of Search: 84/622-633, 84/659-665, 84/692-711, 84/735-741, 84/DIG. 4, 84/DIG. 5, 84/DIG. 26, 84/DIG. 27, 84/DIG. 1, 381/61-65
• US Class Current: 84/662
• 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 1/125 using a digital filter
• CPC Class Codes: Y10S 84/01 Plural speakers

Abstract

A sound control device and method which increase the width of sound of sound data by controlling and outputting the phase of the sound data, in which the phase of the generated sound data is uniformly shifted over the entire frequency band of the related sound data and in which this sound data shifted in phase and the above described generated original sound data are output to different sound systems. By this, sound data with a phase which is uniformly shifted and the original sound data are converted to sound by sound systems different from each other, and therefore the width of the sound is expanded

Claims

1. A sound control device comprising:

sound generating means for generating sound data having plural frequency components over a frequency band;

phase data generating means for generating phase data for shifting the phase of the sound data generated by said sound generating means;

phase shift means for uniformly shifting the phase of the plural frequency components of the sound data generated by said sound generating means over the entire frequency band of the sound data, based on the phase data generated by said phase data generating means, to output phase-shifted sound data;

first and second sound systems for generating sound; and

data selection means, coupled to said sound generating means and said phase shift means, for selectively outputting the phase-shifted sound data output from said phase shift means and the sound data generated by said sound generating means to said first and second sound systems.

2. The sound control device of claim 1, wherein said phase shift means comprises a 90-degree phase shifter.

3. The sound control device of claim 2, wherein said 90-degree phase shifter shifts the sound data in phase by 90 degrees,

said phase shift means synthesizing the 90-degree shifted sound data and the sound data generated by said sound generating means in a certain proportion to output the phase-shifted sound data.

4. The sound control device of claim 3, wherein the synthesized data comprises sine data sin A and cosine data cos A, wherein the sine data sin A is multiplied by one of the 90-degree shifted sound data and the sound data and the cosine data cos A is multiplied by the other of the 90-degree shifted sound data and the sound data.

5. The sound control device of claim 3, wherein the synthesized data is shifted along with a lapse of time.

6. The sound control device of claim 3, where in the synthesized data is shifted in accordance with a musical factor of the sound data.

7. The sound control device of claim 1, wherein said sound generating means, said phase data generating means, said phase shift means, and said data selection means perform processing in a time divisional manner for a plurality of sound data.

8. The sound control device of claim 1, wherein said data selection means synthesizes the phase-shifted sound data and the sound data and outputs the synthesized result or further distributes the synthesized result.

9. The sound control device of claim 3, wherein the synthesized data is subjected to processing in a time divisional manner with respect to a plurality of sound data, respectively.

10. A sound control method comprising:

(a) generating sound data having plural frequency components over a frequency band;

(b) generating phase data for shifting the phase of the sound data generated in said step (a);

(c) uniformly shifting the phase of the plural frequency components of the sound data generated in said step (a) over the entire frequency band of the sound data based on the phase data generated in said step (b) to provide phase-shifted sound data; and

(d) selectively providing the phase-shifted sound data in phase provided in said step (c) and the sound data generated in said step (a) to first and second sound systems.

11. The sound control method of claim 10, wherein said step (b) comprises phase shifting the sound data 90 degrees.

12. The sound control method of claim 11, wherein said step (c) comprises synthesizing the 90-degree shifted sound data and the sound data generated in step (a) in a certain proportion to provide the phase-shifted sound data.

13. The sound control method of claim 12, wherein the synthesized data comprises sine data sin A and cosine data cos A, wherein the sine data sin A is multiplied by one of the 90-degree shifted sound data and the sound data and the cosine data cos A is multiplied by the other of the 90- degree shifted sound data and the sound data in said step (c).

14. The sound control method of claim 12, wherein the synthesized data is shifted along with a lapse of time.

15. The sound control method of claim 12, where in the synthesized data is shifted in accordance with a musical factor of the sound data.

16. The sound control method of claim 10, wherein said steps (a), (b), (c), and (d) perform processing in a time divisional manner for a plurality of sound data.

17. The sound control method of claim 10, wherein said step (d) comprises synthesizing the phase-shifted sound data and the sound data and providing the synthesized result or further distributing the synthesized result.

18. The sound control method of claim 12, where in the synthesized data is subjected to processing in a time divisional manner with respect to a plurality of sound data.