JPS5870404A - Tape recorder - Google Patents

Abstract

PURPOSE:To obtain a natural reproducing sound, by gradually dropping a recording level or a reproducing level at the terminal part of a tape. CONSTITUTION:Length of a recording tape 1 is detected by a tape rotation integrating counter 2. At first, length of the recording tape 1 is counted by the tape rotation integrating counter 2 by means of fast forwarding, etc., and this count number shows a place where a recording level becomes ''0''. Also, in a place which has subtracted optional number of rotation of a tape from this count number, the count number of a recording level drop start time is inputted to a memory of a recording level controlling circuit 3. When recording, a signal from a recording source 4 is recorded onto a tape from a recording head 7 through an electronic volume 5 and a recording amplifier 6. A tape rotation integrating value of the recording tape 1 drops the recording level against the electronic volume 5 from the recording level drop start time being memory contents of the recording level controlling circuit 3.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape recorder, particularly to a recording and street recording system.

In a conventional tape recorder, while recording music or the like, if the performance time of the music or the like is longer than the recordable time of the recording tape, the recording suddenly stops at the end of the recording table. Therefore, when the recording tape is played back, the musical performance suddenly cuts off at the final end of the tape, resulting in an extremely unnatural ending.

An object of the present invention is to provide a tape recorder in which reproduced sound at the final end of the tape is reduced.

According to the present invention, when the recording tape reaches the final end, the tape recorder automatically lowers the recording level at that part, or lowers the playback level at that part, thereby reducing the playback sound at the final part. get.

Next, the present invention will be explained in detail according to embodiments using drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention, where 1 is a recording tape, and the length of this recording tape 1 is detected by a tape rotation integration counter 2! At the beginning, the length of the recording tape 1 is counted by the tape rotation accumulating counter 2 by feeding the recording tape 1. This count number means the point where the recording level becomes "0". The recording level control circuit 3 calculates the count number at the time when the recording level starts to decrease, which is the point where the arbitrary tape rotation speed is subtracted from the count number.
input into memory.

Next, during recording, the recorded content from the recording source 4 passes through the % subpoly, -m 5, the recording amplifier 6, and the recording source 7.
recorded on recording tape 1.

At this time, when the tape rotation integrated value of the recording tape 1 reaches the value of the recording level drop start time which is the memory content of the recording level control circuit 3, the recording level control circuit 3 sends the electronic volume IJ to the electronic volume 5. A control signal is automatically sent to lower the recording level.

The rate at which the recording level decreases at this time is as shown in Figure 2, where the recording level starts to decrease from point A to point B where the recording level becomes 0.
The recording level decreases at a predetermined speed.

According to another embodiment of the present invention, although not shown, the recording level is always kept constant, and the playback level at the end of the tape is lowered during playback, thereby reducing the playback sound. realizable.

As described above, according to the present invention, it is possible to provide a tape recorder that automatically reduces the recording level at the final end of the tape to produce audibly natural reproduced sound.

The count number for the time when the recording level starts to drop can be set in advance depending on the recording tape used, and the actual count number for the time when the level drops is calculated by adding the preset number of non-counts to the count number at the start of recording. Bakoi.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention. , is a block diagram for clarity. FIG. 2 is a diagram showing the change in recording level with respect to the tape rotation cumulative count according to the present invention.

Claims (3)

[Claims] (1) A tape recorder characterized in that the sound generated at the end of the tape is automatically reduced. (2) The tape recorder according to claim 1, wherein the reduction in the reproduced sound is achieved by automatically lowering the recording level at the end of the tape. (3) The tape recorder according to claim 1, wherein the reduction in the raw sound is achieved by automatically lowering the playback level at the end of the tape.