Automatic music playing apparatus

• US 4,602,546 A
• Filed: 06/14/1985
• Issued: 07/29/1986
• Est. Priority Date: 12/24/1982
• Status: Expired due to Term

• Current Assignee: Casio Computer Company Limited
• Original Assignee: Casio Computer Company Limited
• Inventors: Shinohara, Isao
• Primary Examiner(s): Isen, Forester W.
• Application Number:
  US06/745,364
• Time in Patent Office: 410 Days
• Field of Search: 84/1.03, 84/1.01, 84/1.24, 84/1.28
• US Class Current: 84/609
• CPC Class Codes: G10H 1/0041 in coded form

Abstract

Melody information representing pitches and durations of tones is stored in a first area of a RAM whose addresses are designated by a first address counter of an address register. Performance information representing tone colors, vibrato, etc. is stored in a second area of the RAM whose addresses are designated by a second address counter of the address register, while the stored melody information is read out and reproduced. The melody information and performance information stored in the respective areas of the RAM are read out in associated relation with respect to one another, to be sounded from loudspeakers.

Claims

1. An automatic music playing apparatus, comprising:

first and second memory means;

storing means for storing tone information determinative of notes, durations and rests of a musical piece, in said first memory means;

reading means for automatically and continuously reading out said tone information stored in said first memory means;

automatic playing means for reproducing the notes, durations and rests of the musical piece automatically in accordance with said tone information read out by said reading means;

setting means for setting performance information determinative of tone colors and tone effects for the notes of the musical piece, together with time information, in said second memory means while notes stored in said first memory means are played selectively by said automatic playing means, wherein the performance information can be set as desired for the selected notes;

sound producing means coupled to said first and said second memory means for producing sounds automatically and continuously according to the tone information and the performance information read out from said first and said second memory means; and

changing means for changing at least one of the tone colors and tone effects of the sound to be produced by said sound producing means at a timing designated by said time information set in said second memory means.

2. The apparatus according to claim 1, wherein said playing means includes:

a reverse switch;

means for successively reading out the tone information stored in said first memory means in the reverse order to the storing order according to an "on" output of said reverse switch for playing automatically; and

means for correcting the tone information being played automatically into another tone information.

3. The apparatus according to claim 1, wherein said first and second memory means are respective memory areas of a single memory.

4. The apparatus according to claim 3, wherein said single memory is a random access memory, and said automatic playing means includes:

first address designating means for designating addresses in a first area of said random access memory and second address designating means for designating addresses in a second area of said random access memory;

means for generating successive tones of given pitches and tone durations according to tone information read out from addresses designated by said first address designating means; and

means for producing sound according to the output of said tone generating means.

5. The apparatus according to claim 1, which further comprises:

control means for reading out the tone information and performance information stored in said respective first and second memory means in an associated relation with respect to one another for playing music automatically.

6. The apparatus according to claim 5, wherein said playing means includes:

means for successively generating said tone information;

first address designating means for causing the generated tone information to be successively stored in said first memory means;

means for successively reading out said tone information from addresses designated by said first address designating means; and

means for generating tones corresponding to the read-out tone information.

7. An automatic music playing apparatus, comprising:

a central processing unit;

an address register connected to be controlled by said central processing unit;

memory means for storing tone information determinative of notes, durations and rests of a musical piece, and performance information determinative of tone colors and tone effects for the notes of the musical piece, from said central processing unit, the addresses of the memory means being designated by said address register;

a keyboard for supplying said tone information to said memory means under the control of said central processing unit;

input means for supplying said performance information together with time information to said memory means under the control of said central processing unit;

recording means for storing said tone information in said memory means in co-operation with said central processing unit;

reproducing means for reproducing tone signals according to the tone information stored in said memory means, said tone signals having the tone colors and tone effects determined by the performance information stored in said memory means; and

changing means for changing at least one of the tone colors and tone effects of the tone signals to be reproduced by said reproducing means, at a timing designated by said time information.

8. The apparatus according to claim 7, further comprising reading means for automatically and continuously reading out said tone information stored in said memory means, and said reproducing menas reproduces said tone signals according to the tone information read out from said memory means.

9. The apparatus according to claim 7, wherein said recording means includes:

a latch, to which time data provided from said central processing unit and time data provided from said reproducing means are selectively supplied; and

a subtracter having a first input terminal, the output of said latch being supplied to said first input terminal, and a second input terminal, the time data from said central processing unit and reproducing means being selectively supplied to said second input terminal, for producing time data representing tone durations.

10. The apparatus according to claim 8, wherein said reproducing means includes:

tempo clock generating means;

an up/down counter for counting the tempo clock and providing an output supplied as time data to said recording means;

a full adder having a first input terminal, time data contained in tone information from said memory means being supplied to said first input terminal;

a latch for latching the output of said full adder; and

means for supplying the output of said latch to a second input terminal of said full adder.