JPH048479Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an audio signal delay device such as an echo machine.

In an audio signal delay device that is used when playing music, etc. and contributes to increasing the performance effect, an audio signal from the performance is input, and the delayed output audio signal of the audio signal is returned to the input side and once input. When outputting an audio signal repeatedly at a delay time period and emitting the audio signal via an acoustic device, a desirable performance effect cannot be obtained unless the repetition period and performance tempo match.

However, when attempting to use an automatic performance device such as a conventional automatic rhythm performance device in conjunction with the above-mentioned audio signal delay device, it is necessary to match the delay time of the audio signal delay device with the performance tempo of the automatic performance device. Their operation was very cumbersome and they were rarely used together. However, the performance effect when used together is musically unique, so the present invention makes it possible to easily use the audio signal delay device in accordance with the performance tempo of an automatic rhythm performance device, etc. This was done to expand the scope of use of signal delay devices.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

The drawing is a block diagram of an audio signal delay device which is an embodiment of the present invention.

1 is an input terminal for inputting an audio signal; 3 is a digital delay circuit for delaying the input audio signal;
It is assumed that it is driven by a clock signal output from the clock signal generator 7 and is controlled by a CPU (not shown).

Further, in the delay circuit 3, a delay time is set by a delay time data signal set by a delay time setting means 5, and data corresponding to the delay time is sent to a variable frequency divider 8. The frequency dividing ratio of the variable frequency divider 8 is set based on the clock signal generator 7, and the clock signal output from the clock signal generator 7 is divided to generate a clock signal (hereinafter referred to as a tempo signal) having a period corresponding to the delay time. It is configured to output data from an output terminal 9, and also provides data corresponding to the delay time to the display device 6, inputs the delay time of the delay circuit or the tempo signal, and performs automatic performance in synchronization with the input tempo signal. It is also configured to display a numerical value representing the performance tempo of the automatic performance device.

Further, a feedback resistor 2 is provided between the input terminal and the output terminal of the delay circuit 3 to feed back the output signal of the delay circuit 3 to the input side. Reference numeral 4 denotes an output terminal for outputting the delayed audio signal output from the delay circuit 3.

By the way, the display device 6 uses a changeover switch (not shown) to display a numerical value representing the delay time of the delay circuit as described above, for example, a numerical value expressed in milliseconds, or an automatic display that automatically plays in synchronization with the tempo signal. It is designed to select and display one of the numerical values representing the tempo, such as the number of quarter notes played by the performance device in one minute.

If the tempo signal output from the output terminal 9 of the audio signal delay device configured as described above is input to the synchronization signal input terminal of an automatic performance device, such as an automatic rhythm performance device, the delay time of the audio signal delay device and the The performance tempo of the automatic rhythm performance device can be synchronized, and the numerical value representing the performance tempo can be read by the number displayed on the display device 6.

Therefore, even if the automatic performance device is not equipped with a synchronization signal input terminal, the present invention can match the numerical value representing the tempo displayed by the display device 6 with the tempo display value of the automatic performance device. It is possible to perform the audio signal delay device and the automatic performance device almost synchronously.

As described above, the audio signal delay device of the present invention can numerically display the delay time and the performance tempo corresponding to the delay time, so the range of use as an audio signal delay device is wider than before, and it has high practical value. It is.

[Brief explanation of the drawing]

The drawing is a block diagram of an audio signal delay device which is an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Input terminal, 2...Feedback resistor, 3...Delay circuit, 4, 9...Output terminal, 5...Delay time setting means, 6...Display device, 7...Clock signal generator, 8... ...variable frequency divider.

Claims (1)

[Scope of Claim for Utility Model Registration] (a) Delay means for delaying an input audio signal by a predetermined time and outputting it; and (b) Display means for numerically displaying the delay time and the tempo corresponding to the delay time. An audio signal delay device comprising: