System and method for controlling audio equipment
An apparatus for signal processing, wherein a disc is placed on a turntable and is provided with a groove which can be followed by the pick-up element, and employing a time-code signal wherein during use of the disc the said time-code signal controls the digital audio source.
1. A system for controlling play of audio equipment, the system comprising:
a disc including a control signal indicative of at least speed of disc play and directionality of disc play, the disc rotating on a turntable,
wherein the disc includes an absolute control signal, in the audible range between 20 and 20,000 Hz;
a detection filter processing the control signal to determine a relative control signal based on a phase difference between a left channel and a right channel of the control signal,
wherein the relative control signal indicates directionality of disc movement; and
a digital filter utilizing the absolute control signal and the relative control signal to determine an accurate control signal serving to control play of audio equipment.
2. The system according to claim 1 , wherein controlling play of the audio equipment includes controlling the speed of play of the audio equipment.
3. The system according to claim 1 , wherein controlling play of the audio equipment includes controlling the direction of play of the audio equipment.
4. The system according to claim 1 , wherein the place of play on the audio equipment is determined.
5. The system according to claim 1 , wherein play of the audio equipment comprises the play of music.
6. The system according to claim 1 , wherein the audio equipment comprises one or more of a CD player, a DVD player, and an MP3 player.
7. A method for controlling play of audio equipment, the method comprising:
rotating a disc on a player;
deriving absolute control signals from the rotating disc in the audible range between 20 and 20,000 Hz;
determining relative control signals based on a phase difference between a left channel and a right channel of the control signals; and
utilizing the absolute control signals and the relative control signals to control at least the speed of play and the direction of play of the audio equipment.
8. An apparatus for using control signals to determine play of audio equipment, the apparatus comprising:
a rotational device;
a disc, which when processed on the rotational device, provides signals to control play of audio equipment, wherein the disc comprises:
absolute control signals indicative of the speed and the directionality of disc play on the rotational device;
an analog/digital converter converting the control signals to digital control signals;
a detection filter processing the converted control signals to determine relative time-code signals by detecting a phase difference between a right channel and a left channel,
wherein the relative time-code signals are determinative of the direction of movement of the disc;
a digital filter utilizing the absolute control signals together with the relative time-code signals to determine accurate time-code signals; and
an output filter utilizing the accurate time-code signals to determine play of the audio equipment.
9. The apparatus according to claim 8 , wherein the audio equipment comprises one or more of a CD player, a DVD player, and an MP3 player.
10. The apparatus according to claim 8 , wherein play of the audio equipment includes producing a scratch sound effect based on the speed and the directionality of play of the disc.
11. The apparatus according to claim 8 , wherein the place of play on the audio equipment is determined.
12. The system according to claim 1 , wherein play of the audio equipment includes producing a scratch sound effect based on the speed and the directionality of the disc play.
13. A system for controlling play of audio equipment, the system comprising:
a disc including a control signal in the audible range between 20 and 20,000 Hz indicative of at least speed of disc play and directionality of disc play, the disc rotating on a player,
a detection filter processing the absolute control signal to determine a relative control signal based on a phase difference between a left channel and a right channel of the absolute control signal,
wherein the relative control signal indicates directionality of disc movement; and
a digital filter utilizing the absolute control signal and the relative control signal to determine an accurate control signal serving to control play of audio equipment.
14. The system according to claim 13 , wherein the audio equipment comprises one or more of a CD player, a DVD player, and an MP3 device.
15. The system according to claim 13 , wherein play of the audio equipment comprises at least one of controlling speed of play of the audio equipment and controlling direction of play of the audio equipment.
16. A method for controlling play of audio equipment, the method comprising:
rotating a disc on a player;
deriving absolute control signals from the rotating disc in the audible range between 20 and 20,000 Hz;
determining relative control signals based on a phase difference between a left channel and a right channel of the absolute control signals; and
utilizing the absolute control signals and the relative control signals to control at least the speed of play and the direction of play of the audio equipment.
17. The method according to claim 16 , wherein the audio equipment comprises one or more of a CD player, a DVD player, and an MP3 device.
18. The method according to claim 16 , wherein play of the audio equipment includes producing a scratch sound effect based on the speed and the directionality of the disc play.
19. An apparatus for using control signals to determine play of audio equipment, the apparatus comprising:
a rotational device;
a disc, which when processed on the rotational device, provides signals to control play of audio equipment, wherein the disc comprises:
absolute control signals indicative of the speed and the directionality of disc play on the rotational device;
a detection filter processing the absolute control signals to determine relative control signals by detecting a phase difference between a right channel and a left channel,
wherein the relative control signals are determinative of the direction of movement of the disc;
a digital filter utilizing the absolute control signals together with the relative control signals to determine accurate control signals; and
an output filter utilizing the accurate control signals to determine play of the audio equipment.
20. The apparatus according to claim 19 , wherein the audio equipment comprises one or more of a CD player, a DVD player, and an MP3 device.