GB2378806A - Digital audio signal apparatus - Google Patents

Digital audio signal apparatus Download PDF

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Publication number
GB2378806A
GB2378806A GB0119964A GB0119964A GB2378806A GB 2378806 A GB2378806 A GB 2378806A GB 0119964 A GB0119964 A GB 0119964A GB 0119964 A GB0119964 A GB 0119964A GB 2378806 A GB2378806 A GB 2378806A
Authority
GB
United Kingdom
Prior art keywords
processor
digital
system micro
signal
turntable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0119964A
Other versions
GB0119964D0 (en
Inventor
Han-Chih Liu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hanpin Electron Co Ltd
Original Assignee
Hanpin Electron Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hanpin Electron Co Ltd filed Critical Hanpin Electron Co Ltd
Priority to GB0119964A priority Critical patent/GB2378806A/en
Publication of GB0119964D0 publication Critical patent/GB0119964D0/en
Publication of GB2378806A publication Critical patent/GB2378806A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/0091—Means for obtaining special acoustic effects
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02—Analogue recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/005—Reproducing at a different information rate from the information rate of recording
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2210/00—Aspects or methods of musical processing having intrinsic musical character, i.e. involving musical theory or musical parameters or relying on musical knowledge, as applied in electrophonic musical tools or instruments
    • G10H2210/155—Musical effects
    • G10H2210/195—Modulation effects, i.e. smooth non-discontinuous variations over a time interval, e.g. within a note, melody or musical transition, of any sound parameter, e.g. amplitude, pitch, spectral response, playback speed
    • G10H2210/241—Scratch effects, i.e. emulating playback velocity or pitch manipulation effects normally obtained by a disc-jockey manually rotating a LP record forward and backward
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • G11B2020/10592—Audio or video recording specifically adapted for recording or reproducing multichannel signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2545—CDs

Abstract

A digital audio signal player includes a control faceplate so that the user, such as a DJ, can interface with the system and control the rotating speed and direction of a motor driven turntable 63. A light-sensitive sensor measures the speed and direction of the turntable so that music data of a CD stored in a dynamic memory chip can be adjusted accordingly to produce a variety of sound effects to heighten the atmosphere of joy.

Description

<Desc/Clms Page number 1>
DIGITAL SOUND-SIGNAL BROADCASTER BACKGROUND OF THE INVENTION This invention relates to a digital sound-signal broadcaster, particularly to one capable to make a variety of special sound effects by means of a CD, easy in using and convenient for carrying and possible to prevent any wear.
Conventionally, on an occasion like a pub, a dancing party, a concert or the like, a DJ always makes various special sound effects while broadcasting music by controlling a record to rotate clockwise or counterclockwise and regulate its rotating speed by hands in order to heighten atmosphere of joy, but such a way of handling by hands has some defects described below.
1. A conventional plastic-made disk can broadcast music only in a way of letting the pickup and a record contacting with each other and rotating at a definite speed and direction. If the rotating speed and direction of a record is controlled by hands, the pickup and the record are easy to be damaged and must be replaced very often, thus wasting much money.
2. Not much songs can be recorded in such a conventionally plastic-made record, so in order to prepare enough music for broadcasting, a great number of records have to be
<Desc/Clms Page number 2>
prepared in advance, inconvenient in carrying and handling.
3. It is not easy to directly pick out a song he/she wants in such a conventional record without experience, inconvenient in the process of broadcasting.
SUMMARY OF THE INVENTION The primary objective of this invention is to offer a digital sound-signal broadcaster in which music data of a common CD is read and stored in a dynamic memory chip, and, by checking the rotating speed and direction of the turntable, this music data is modulated to output a variety of special sound effects, possible to prevent any wear.
The second objective of this invention is to offer a digital sound-signal broadcaster in which the music data in a CD can be processed into various special sound effects, and a CD is light and further has a capacity of storing lots of music data, easy and convenient in use and carrying.
The third objective of this invention is to offer a digital sound-signal broadcaster, which has a the control faceplate capable to control and show the condition of songs picked out so that a DJ can handler to select a song he/she wants and to make various
<Desc/Clms Page number 3>
sound effects.
BRIEF DESCRIPTION OF THE DRAWINGS This invention will be better understood by referring to the accompanying drawings, wherein : Figure 1 is a block diagram of an electronic circuit of the present invention.
Figure 2 is a perspective view of a turntable of the present invention.
Figure 3 is a perspective view of another embodiment of a turntable of the present invention.
Figure 4 is a diagram of the first judging of timing by a photosensitive speed detector of the present invention.
Figure 5 is a diagram of the second judging of timing by the photosensitive speed detector of the present invention.
Figure 6 is a diagram of the third judging of timing by the photosensitive speed detector of the present invention.
Figure 7 is a diagram of the fourth judging of timing by the photosensitive speed detector of the present invention.
<Desc/Clms Page number 4>
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a digital sound-signal broadcaster of this invention, as shown in Figure 1, includes an electronic circuit and some other components.
The process of handling the digital sound-signal broadcaster of this invention is as follows.
A CD is placed on a disk tray 12 positioned on a saucer disk drive motor 11 controlled by a drive IC 1, and inputting and withdrawing of the CD is controlled by a proceeding motor 13 driven by a drive IC 1, and then a system micro-processor 2 is actuated to let a high frequency amplifier 3 turn on a laser light and activate a CD digital processor 4 to start a laser pickup 14 via the drive IC 1. The laser pickup 14 driven to rotate around by a pickup proceeding motor 15 controlled by the drive IC 1 will transmit a signal via the high frequency amplifier 3 to said CD digital processor 4 which will notify the system micro-processor 2 whether the signal is focused or not. In case the signal fails to be focused, the system micro-processor 2 will stop any action, and on the contrary, if the signal is successfully focused, it will control the CD digital processor 4, and at the same time a disk drive motor 11 will be started via the drive IC 1 to let the CD on the disk rack 12 rotate
<Desc/Clms Page number 5>
at double speed. Then, when the CD rotates together with the disk rack 12, the laser pickup 14 will read the music data in the CD and transmit them to both the system micro-processor 2 and the digital sound signal processor 5 via the high frequency amplifier 3 and the CD digital processor 4. Subsequently, the data of the CD will be shown on a control faceplate 21 by means of the system microprocessor 2, and the music data of the CD will be stored in a dynamic memory chip 51 by the digital sound signal processor 5.
In broadcasting, action needed is input and transmitted in the system micro-processor 2 via the control faceplate 21, and after the system micro-dealer 2 has received the order of action, a start and stop speeding control circuit 6 will control a motor drive circuit 61 and, via a direct drive motor 62, also control starting, stopping and the rotating speed of a turntable 63.
Further, according to the condition of the control faceplate 21 received by the system micro-dealer 2, and based on the information of the turntable 63 controlled by the control faceplate 21 and detected by the photosensitive speeding detector 52, the digital sound signal dealer 5 decides the music data to be stored in the dynamic memory chip 51. arranging songs to be broadcast and regulating the rotating speed and direction of the CD, and, after the music data is converted into analog data by means of a digital/analog converter 7, broadcasting the music via the filtered
<Desc/Clms Page number 6>
wave of a low pass filter 8.
In addition, the turntable 63 of this invention can be provided with a light-reflective member 631 printed around its outer circumferential edge, as shown in Figure 2, or bored with numerous minute holes 632 having light-reflective paper 633 pasted under its bottom, as shown in Figure 3. Then, the photosensitive speed detector 52 composed of two optical detectors will detect the rotating speed and direction of the CD by means of a A detector 521 and a B detector 522 forming a phase difference of 90 degrees between the signals, as shown in Figure 4. When the turntable 63 stops rotating, the A detector 521 or the B detector 522 will remain immovable because of no continual simulating signal detected, as shown in Figure 5. But, as soon as the turntable 63 rotates rightward, the A detector 521 detects the triggering signal, and at the same time, the system micro-processor 2 will calculate time difference between this signal and a next one and synchronously figure out the rotating speed of the turntable 63, as shown in Figure 6. On the contrary, when the turntable 63 rotates leftward, the B detector 522 detects the triggering signal and notifies the system micro-processor 2 to calculate time difference between two triggering signals detected by the B detector 522, and in the mean while, the rotating speed of the turntable 63 is figured out, as shown in Figure 7.
Furthermore, after the A detector 521 and the B detector 522
<Desc/Clms Page number 7>
have calculated the rotating direction and speed of the turntable 63, they will wait for a next signal to come and at the same time, judge which signal will reach the triggering position first so as to decide whether there is any need to alter the direction and speed of the turntable 63; Additionally, the turntable 63 itself can be detected its rotating speed and direction by applying a conventional detecting principle of an optical mouse.
As can be understood from the above description, this invention has the following advantages compared with the conventional one.
1. The music data of the CD stored in the dynamic memory is controlled by the rotating speed and direction of the turntable, impossible to result in any wear.
2. A variety of special music can be brought forth by applying the music data in a common CD, which is light and further capable to store a great many of music data, convenient in using and carrying.
3. The control faceplate can be utilized by a user for picking out songs and controlled to make a variety of special sound effects and capable to show an inputting condition and the information of the music data, possible to handle it with easiness.
4. The music data is transmitted to the digital sound signal processor at double speed and then stored in the dynamic
<Desc/Clms Page number 8>
memory ship so that the digital sound signal processor can in time broadcast the music data in the dynamic memory chip, no matter the disk on the turntable is rotating clockwise or counterclockwise or at different speed.

Claims (4)

CLAIMS :
1. A digital sound-signal broadcaster comprising, a disk tray provided on a disk drive motor controlled by a drive IC and a proceeding motor controlling said disk tray for the inputting and the withdrawing of a disk on said disk tray, said proceeding motor also controlled by said drive IC, a high frequency amplifier turning on a laser light and controlling a CD digital processor to start a laser pickup by
means of said drive IC when a system micro-dealer is actuated to act, said laser pickup actuated to move by the pickup proceeding motor controlled by said drive IC, a signal of said laser pickup transmitted to said CD digital processor via said high frequency amplifier, said CD digital processor notifying said system micro-processor whether said signal is focused or not, in case of not focused said system micro-processor stopping any action, in case of focused said system micro-processor controlling said CD digital processor to start a disk drive motor by means of said drive IC to let the CD on said disk tray rotating at double speed, said laser pickup reading the music data of said CD and transmitting them into both said system micro-processor and said digital sound signal processor via
<Desc/Clms Page number 10>
said high frequency amplifier and said CD digital processor, then the information of said CD being to be shown on said control faceplate by means of said system micro-processor, and said music data of said CD being to be stored in a dynamic memory chip by means of said digital sound signal processor ; a user inputting needed action through said control faceplate, said needed action transmitted in said system micro-processor via said control faceplate, said system micro-processor controlling starting, stopping and rotating speed of said turntable by means of a start and stop speed control circuit which controls a motor circuit and a direct drive motor, said digital sound signal processor deciding to store said music data in said dynamic memory chip, and arranging songs to be broadcast and regulating the rotating speed and direction according to the condition of said control faceplate received by said system micro-processor and the information of the rotating condition of said disk detected by a photosensitive speed detector, said music data converted into analog data via a digital/analog converter and broadcasted through the filtered wave of a low pass filter.
2. The digital sound-signal broadcaster as claimed in Claim 1,
<Desc/Clms Page number 11>
wherein a light-reflective member can be printed on an outer circumferential edge of said turntable controlled by said start, stop and speed control circuit for detecting its rotating speed and direction by means of a photosensitive speed detector composed of two optical detectors.
3. The digital sound-signal broadcaster as claimed in Claim 1, wherein said turntable controlled by said start, stop and speed control circuit is bored with numerous minute holes around its outer circumferential edge having a light-reflective paper pasted under said minute holes for detecting the rotating speed and direction of said turntable by means of a photosensitive speed detector composed of two optical detectors.
4. The digital sound-signal broadcaster as claimed in Claim 1, wherein the rotating speed and direction of said turntable controlled by said start and stop speed control circuit is detected directly by applying the principle of an optical mouse.
GB0119964A 2001-08-15 2001-08-15 Digital audio signal apparatus Withdrawn GB2378806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0119964A GB2378806A (en) 2001-08-15 2001-08-15 Digital audio signal apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0119964A GB2378806A (en) 2001-08-15 2001-08-15 Digital audio signal apparatus

Publications (2)

Publication Number Publication Date
GB0119964D0 GB0119964D0 (en) 2001-10-10
GB2378806A true GB2378806A (en) 2003-02-19

Family

ID=9920492

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0119964A Withdrawn GB2378806A (en) 2001-08-15 2001-08-15 Digital audio signal apparatus

Country Status (1)

Country Link
GB (1) GB2378806A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2391688A (en) * 2002-08-01 2004-02-11 Nik Baumann Turntable stylus device
GB2392773A (en) * 2002-09-03 2004-03-10 Kenneth John Bagnall Digital turntable music deck
GB2404075A (en) * 2003-05-14 2005-01-19 Ya Horng Electronic Co Ltd Digital audio signal playback apparatus with scratch effect control device
GB2405740A (en) * 2003-09-03 2005-03-09 Hanpin Electron Co Ltd Manually controlled dual audio signal player for analogue record and CD

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997001168A1 (en) * 1995-06-20 1997-01-09 Rickli Andre Digital processing device for audio signal
WO1997033282A1 (en) * 1996-03-08 1997-09-12 Ralf Pretz Device and method of controlling the playback speed of a compact disc (cd) inserted into a cd player
GB2361348A (en) * 2000-02-23 2001-10-17 Simon Andrew Ford Record deck interface for DJ scratching

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997001168A1 (en) * 1995-06-20 1997-01-09 Rickli Andre Digital processing device for audio signal
WO1997033282A1 (en) * 1996-03-08 1997-09-12 Ralf Pretz Device and method of controlling the playback speed of a compact disc (cd) inserted into a cd player
GB2361348A (en) * 2000-02-23 2001-10-17 Simon Andrew Ford Record deck interface for DJ scratching

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2391688A (en) * 2002-08-01 2004-02-11 Nik Baumann Turntable stylus device
GB2391688B (en) * 2002-08-01 2006-02-15 Nik Baumann Turntable Having Recording Medium Motion Detection Means
GB2392773A (en) * 2002-09-03 2004-03-10 Kenneth John Bagnall Digital turntable music deck
GB2404075A (en) * 2003-05-14 2005-01-19 Ya Horng Electronic Co Ltd Digital audio signal playback apparatus with scratch effect control device
GB2404075B (en) * 2003-05-14 2005-05-25 Ya Horng Electronic Co Ltd Digital audio signal playback apparatus with scratch effect control device
GB2405740A (en) * 2003-09-03 2005-03-09 Hanpin Electron Co Ltd Manually controlled dual audio signal player for analogue record and CD
GB2405740B (en) * 2003-09-03 2005-08-31 Hanpin Electron Co Ltd Dual-use audio signal player for analogue record and digital CD

Also Published As

Publication number Publication date
GB0119964D0 (en) 2001-10-10

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