JPH0319046Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a multiplex recording system using a multi-channel playback head.

The following three methods are known for overdubbing a tape.

1 Method using a recording/playback head 2 Method using a recording head as a playback head 3 Sound-on-sound method In the above method, one head is used for recording and playback, but each function can be carried out in one head. Since it is impossible to satisfy this requirement, a narrow gap type is generally designed to give priority to reproduction characteristics and reproduce high frequencies. As a result, the dynamic range and distortion characteristics during recording deteriorate, so a solution such as increasing the tape speed is required.

The second method is a three-head method including an erase head in which the recording head is provided independently of the playback head, and the sound recorded by the recording head can be monitored by the playback head. Since there is a slight positional misalignment between the recording head and the playback head, if all channels are recorded and then played back, the sound will be shifted by the amount of misalignment. For this reason, synchronization was achieved by using the recording head as a playback head, but since the recording head was designed to have a wide gap, there was a problem in that the high frequency playback ability was poor.

Furthermore, in the third method, the previously recorded sound is played back and mixed with the sound to be recorded later, but when recording multiple channels, it is difficult to redo only one channel several times. The problem is that it cannot be done either.

The present invention was developed in response to the above problems, and uses a multichannel playback head equipped with a recording head having an inline recording gap, and an erase head disposed on the same track as the recording head. The object of the present invention is to provide a multi-channel multi-recording system which eliminates the drawbacks of the conventional method by moving the multi-channel playback head and erase head up and down relative to the tape to perform multi-recording. It is. Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram showing a multi-channel multiplex recording system according to an embodiment of the present invention, in which playback heads PH ₁ to _{PH 8 for channels 1 to 8} and recording heads provided on the same line (inline) as these are shown. An eight-channel playback head _H1 equipped with a recording head RH and an erasing head _H2 equipped with an erasing head ER placed on the same track as the recording head RH are prepared. ₁ to the above erase head H ₂ erase head
Bring ER and recording head RH of playback head _H1 into contact. If the tape T is run in this state, recording will be performed on track _T1 of the tape T. It is up to you which part of track T ₁ you want to record, but when recording music, for example, if you add the rhythm of drums or the like first, it will be easier to make multiple recordings.

Next, by lowering the reproducing head _H1 and the erasing head _H2 one step, the tracks on the tape T are erased.
Reproduction head PH ₈ of reproduction head H ₁ is brought into contact with T ₁ .

If the tape T is run in this state, the previously recorded signal of track _T1 (for example, drums) will be played back by the playback head _PH8 , so while listening to this signal, the next part will be recorded on track _T2 . can be recorded.

By sequentially repeating such operations, different sounds can be recorded on all tracks _T1 to _T8 of the tape T in synchronization with each other. If you fail to record, you can redo that track as many times as you like. Since the playback head and amplifier are always in operation during these recording operations, a sound-on-sound method can be realized by line mixing their outputs during the next recording.

FIG. 2 shows another embodiment of the present invention, in which the playback heads from channel 1 to channel 4 are connected.
A four-channel playback head _H1 comprising PH ₁ to PH ₄ and a recording head RH arranged on the same line as these, and an erasing head equipped with an erasing head ER arranged on the same track as the recording head RH.
Prepare H ₂ and tape T with tracks T ₁ to _{T 4}
This shows an example of multiple recording.

FIG. 3 shows another embodiment of the present invention, which includes playback heads PH ₁ to _{PH 4} for channels 1 to 4, and a recording head RH ₁ provided above and below these and on the same line. and
a four-channel playback head H ₁ with RH ₂ ; an erase head with erase heads ER ₁ and ER ₂ arranged on the same track as recording heads RH ₁ and RH ₂ ;
Prepare H ₂ and tape T with tracks T ₁ to _{T 4}
This figure shows an example of a case where multiple recording is performed by allowing movement from both upward and downward directions. By combining this method with the sound-on-sound method, a considerable number of overdubbings can be made.

Fig. 4 shows another embodiment of the present invention, which shows stereo heads PH _L1 to PH L4 and RH _R1 to RH _R4 from channel 1 to channel 4, and _a recording head provided on the same line as these.
A four-channel stereo playback head _H1 equipped with RH _L and _RHR , and an erasing head _H2 equipped with erasing heads ER _L and ER _R placed on the same track as the recording head RH _L and RH _R are prepared. , the above playback head H1 and erase head _H2 are applied to the tape T having tracks _T1 to _T8 in two stages ( _each for two tracks).
This shows an example in which stereo multiple recording is performed by lowering the signal.

FIG _. 5 shows another embodiment of the present invention, in which as _shown in FIG _. Erasing head _H2 with
When a tape T having tracks T ₁ to _{T 8} is prepared and 8 channels are played simultaneously, or a recording head H ₃ with recording heads RH ₁ to RH ₈ and a full-width erase head H ₄ are used to play back a tape T at the same time. This shows an example of simultaneous recording of eight channels. This makes it possible to perform normal 8-track recording during multi-recording playback or when eight or more players gather together to simultaneously record a performance.

Note that when performing multi-channel overdubbing, since humans only have two ears, left and right, two channels must be used. This can usually be done by tracking down using a mixer, or by having a mixer built into the recorder.

In each embodiment, the reproducing and erasing heads can be moved up and down relative to the tape in a conventional manner using cams, pressure springs, and pins.

As is clear from the above description, according to the present invention, a multi-channel playback head equipped with a recording head having an in-line recording gap and an erasing head disposed on the same track as the recording head are used. Since the multi-channel playback head and the erase head are moved up and down relative to the tape to perform multiple recording, all of the drawbacks of the prior art can be eliminated.

[Brief explanation of the drawing]

1 to 5 are schematic diagrams showing embodiments of the present invention. H ₁ ... Playback head, H ₂ ... Erase head, PH ₁
~PH ₈ ... Playback head, RH... Recording head, ER... Erasing head, T... Tape, T ₁ ~
T ₈ ...Truck.

Claims (1)

[Scope of utility model registration request] A multichannel playback head with a recording head having a recording gap inline with all of the plurality of playback heads, and an erasing head disposed on the same track as the recording head are used. 1. A multichannel multiplex recording system, characterized in that the head is moved up and down relative to the tape to set a desired head for each track on the tape to perform multiple recording or playback.