SU486361A1 - Tape recorder - Google Patents

Description

one

The invention relates to the field of instrumentation, in particular to a magnetic recording apparatus that records speech on a multi-track magnetic tape with the further conversion of digital information into digital form.

Devices for recording voice messages on magnetic tape are known. They are mainly used in the on-board equipment for generating alerts or for recording certain information. The electrical circuit of such devices is usually made of successively connected microphones, a speech spectrum analyzer, an analog-to-digital converter and a block of magnetic heads, which are used to record or play information from a magnetic tape. In this case, the recording, as well as reproduction, are multi-track. But with such information, the need for pauses in most cases is absent.

The purpose of the invention is to reduce the area of magnetic tape occupied by pauses.

This is achieved due to the fact that the proposed device is equipped with an "OR circuit" and in series with it a connected frequency divider connected between the output of the analyzer and the input of the electric drive.

The drawing shows a block diagram of a device for recording speech on MarH jiTHoA mite.

2

At the input of the device, a microphone 1 is installed, which is a receiver of sound waves. The speech spectrum analyzer 2, analog-to-digital converter 3, the block of 4 magnetic heads are connected in series with the microphone. A serial circuit is connected to the output of the analog-to-digital converter, consisting of an OR 5 circuit, a frequency divider 6, and an electric drive 7 connected to a side-by-side tape drive mechanism 9, mainly of a step type. Magnetic mite 11 is located on the side nodes 8 and 10. The block of magnetic globes is used universal, which allows it to be used both in the recording mode and in the playback mode.

The speech spectrum analyzer converts the signal coming from the microphone into a sigpal parameter, which in turn is converted by the analog-digital converter into a sequence of electrical pulses simultaneously arriving at the OR circuit. Due to the fact that the proposed device is multichannel, as many "OR" circuits are used as there are channels at the output of converter 3 and elementary magic heads in the block of heads. The first impulse from the circuit OR starts the electric drive and begins the stepping movement of the magppti tape. At the end of this impulse

recording stops, and the tape stops before the next pulse.

If there is no signal at the output of the converter 3, which is associated with a pause in the voice message, the combination of the code corresponding to the position "all zeros" takes place. In this case, the drive is not turned on. When signals arrive, their recording density is such that it is practically a continuous stream of information. Such information is convenient and economical for further processing to enter into electronic computers.

Subject invention

A device for recording speech on a magnetic tape, containing an electric drive, a successively connected microphone, a speech spectrum analyzer, an analog-to-digital converter and a block of magnetic heads, characterized in that, in order to reduce the area of the magnetic tape, which takes up pauses,

it is equipped with series-connected OR circuit and a frequency divider connected between the output of the analyzer and the input of the electric drive.

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