JPS6145443A - Tape recorder provided with voice operation - Google Patents

Abstract

PURPOSE:To set up a recording level by simulating voice operation by an LED whole keeping tape travelling at the stopped status when voice operation and temporary stop switches are in the ON status and a recording mode is set up. CONSTITUTION:A signal from a microphone 1 is amplified by an audio amplifier 2 and supplied to a voice operation control circuit 3 through a volume 9. The output of the circuit 3 is supplied to the LED8 through one terminal of a pause switch S4 and a resistor 7. If an input more than a fixed level is applied to the circuit 3, the voltage of its output terminal is turned to H, the LED8 is turned on, and if the S4 is closed, a motor governor 5 is driven and a motor 6 status to rotate. When the S4 is opened, the motor 6 does not rotate, but the output status of the circuit 3 can be detected by the ON and OFF of the LED8 and the voice operation can be simulated by the LED8.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention (c) relates to a tape recorder with voice operation.

(Constitution of conventional example and its problems) In recent years, many Qi-70 recorders equipped with a voice operation function have come to be seen.

In such a voice-operated tape recorder, the motor is started to start recording when a voice above a certain level is input from the microphone, and when the voice below a certain level continues for a certain period of time, the motor is stopped and recording begins. The main purpose is to automatically stop and save tape. In conventional voice-operated tape recorders, the user usually has to set the voice input level when the motor starts.

However, when recording meetings, etc., it is extremely difficult to set the level because the volume of the voice varies depending on the speaker and the surrounding noise changes. Therefore, the user is asked to wipe several 1 g? I had to set the level by mistake. Therefore, the tape will advance during trial and error. In the end, the disadvantage was that unnecessary recordings were made before the level setting was completed, resulting in wasted recording.

(Objective of the Invention) In order to eliminate the above-mentioned drawbacks, the present invention provides a tape recorder that allows level setting by trial and error without running the tape, thereby preventing wasteful use of the tape. The purpose is to

(Structure of the Invention) A resistor and an LED for display are connected between the output of the voice operation control circuit and the ground, so that the operation of the voice operation can be simulated by blinking the LED even when the pause is ON and the tape is not running. It is something.

(Description of Embodiment) An embodiment of the present invention will be described below with reference to the drawings. The accompanying figure is a block diagram of one embodiment of the invention. In this figure, 1 is a microphone, 2 is an audio amplifier, 3 is a voice operation control circuit, 4 is a pause switch,
5 is motor governor, 6 is motor, 7 is resistor, 8 is L
ED, 9 is the volume.

A microphone 1 is connected to an audio amplifier 2, and its output terminal is connected via a volume 9 to an input terminal of a voice operation control circuit 3. An output terminal of the e-chair operation control circuit 3 is connected to one end of a pause switch 4 and an anode of an LED 8 via a resistor 7. The canard of the LED 8 is connected to ground, and the other end of the pause switch 4 is connected to a control terminal of the motor governor 5. Further, a motor 6' is connected to the motor governor 5.

When the voice operation control circuit 3 receives an input above a certain level (fixed), the voltage at the output terminal becomes HIGI (so the LED 8 lights up, and if the pause switch 4 is closed, the motor governor 5 operates, The motor 6 rotates.If the input to the voice operation control circuit 3 continues below a certain level for a certain period of time, the voltage at the output terminal becomes L.
Since the state is OW, the LED 8 does not light up and the motor 6 does not rotate regardless of whether the pause switch 4 is open or closed. From the above operation, when pause switch 4 is closed, L
ED8 lights up when the motor 6 is rotating and goes out when it stops. When the pause switch 4 is open, the motor 6 does not rotate when the pause switch 4 is in the pause ON state, but the output status of the voice operation control circuit 3 can be known by the blinking of the LED 8, so the voice operation operation can be performed. can be simulated using LEDs.

(Effects of the Invention) As explained above, according to the present invention, the voice operation can be performed by 7 mil/min while the tape is stopped running.
Since it can be rotated, the user can set the level by trial and error while watching the blinking LED. Therefore, unnecessary recording is not made, which greatly contributes to tape savings.

[Brief explanation of drawings]

The figure is a professional diagram showing one embodiment of the present invention. 1. Microphone, 2. Audio amplifier, 3. Voice operation control circuit, 4. Pause switch, 5. Motor governor, 6. Motor, 7.
...Resistance, 8...Light emitting diode, 9...Piri-
Mu.

Claims (1)

[Claims] It has a voice operation control circuit, a light emitting diode for display, and a pause switch connected to its output via a resistor, and when both the voice operation and pause switches are in the ON state and the recording state is in progress, the tape runs. 1. A tape recorder with voice operation, characterized in that the operation of the voice operation can be simulated using a light emitting diode while the tape recorder remains stopped.