DE1063397B - Method for the combined recording of several individual recordings on a magnetic sound track and arrangement for its exercise - Google Patents

Description

It is known to combine electroacoustic individual recordings in sound recording / playback devices, so that a mixed sound pattern corresponding to a group recording is created.

If one takes as an example the area of the magnetic sound devices that are customary for this purpose, then Usually several devices are used next to each other for this, but then the highest technical Requirements regarding uniformity of device operation and synchronism are made. In addition, a particularly technically experienced person is required to operate. To simplify it is one also switched to using only one magnetic recorder. This is a sound recording mixed with another recording in that by means of a recording head without deletion on the A further electroacoustic recording is given to the audio track that has already been recorded. So after that is one recording and one playback head switched on for the same track, while the one for simple recordings upstream extinguishing head does not come into operation. This is often done by pressing a Special switch, e.g. B. Pushbutton, which has the general name due to the special form of recording »Tricktaste« leads. However, this method, which is simple in itself, has significant disadvantages. Once through The double recording on the sound carrier generates strong distortions, and the first recorded is also recorded Program heavily dampened. There is also no possibility of increasing the volume of the first signal voltage to regulate.

The outlined disadvantages of known designs are avoided with the method according to the invention, This is also reflected in the particular simplicity of operation when using only one recording / playback device for electrostatic soundtracks for combining different recordings on one track. The method exists according to the invention in that a first performance already recorded in a track after scanning is electrical in a manner known per se in a mixer amplifier stage with further electro-acoustically recorded Mixed performances, as a new trace next to the undeleted trace of the first performance is recorded.

The arrangement for practicing the method can be constructed such that when using several Soundtracks next to or on top of each other record combined sound recordings as a new soundtrack in the same sequence next to a scanned sound track provided with only one playback head on one further track provided with erase head, recording head and, if necessary, also playback head takes place. It may be undesirable to use combined recording methods several single shots

on a magnetic sound track
and order to exercise it

Applicant:
SABA

Black Forest Apparatus Construction Company

August Schwer sons G .. b. H.,

Villingen (Black Forest)

Heinrich Boewe and Franz Dobesch,

Villingen (Black Forest),
have been named as inventors

to delete the first audio track after acceptance, e.g. B. when recording a sound with a microphone should be discussed and errors occur. In this situation, with known arrangements the first sound recording after it was removed will be deleted, and only the combination with The re-discussion with any errors that have occurred is recorded, but from which the errors are then recorded can no longer be eradicated, since the first soundtrack is now missing for a new recording without errors. To According to the invention, there are now two sound tracks from the first sound recording, one of which is only assigned to a playback head, so no deletion takes place. The mixed shots, on the other hand are added to the first remaining track as a new sound track using the recording head recorded. Now emerge when checking this mixed recording track through eavesdropping any flaws, these bodies are simply to be erased and combined with on the first To discuss the soundtrack still existing first recording. There is also the new combination track Corresponding to the grouping of the heads, it is precisely assigned to the first, non-erased track in terms of position is, you only need to erase the faulty individual passages for correction and record them again, whereby a time-consuming re-recording of the overall performance is spared. Next are corrections of individual make more reliable than complete new recordings, since there is a risk that although

909 607/186

Claims (4)

the previously incorrect places have been corrected, but new errors have occurred in other places. When making the correction, however, it must be ensured that the magnetic sound carrier or the tape on the second track is moved past the erase head in front of the recording head, so that the second track is erased according to the distance from the erase to the recording head. This distance does not interfere if corrections are expediently always introduced until there is a pause in speaking or the end of a bar. In order to ensure safety in the switching measures to be taken for this purpose, in an expedient development of the arrangement according to the invention, the switch for trick recording is designed so that it switches off automatically when the tape is played back. This avoids any further influencing of the tape after the recording, and further recordings can only be made on the track after the trick button has been pressed again. H. Mixing any number of recordings, according to the subject matter of the invention, there is the advantage that the newly recorded combination track is always present next to the prerecorded track. For example, for a tape with two tracks, track 1 initially contains performance 1, track 2 the combination of performance I + II. For further trick recordings, performance I and additions II and III are recorded on track 1, and accordingly performance I on track 2 and supplements II, III and IV. This can be carried out alternately as desired, whereby the previously recorded tracks are always retained. If you want to have all the tracks available according to the recording levels, you need a multi-track tape corresponding to the number of these levels, where these levels are adjacent or on top of each other as tracks. For these possibilities, the grouping of heads as a whole must be designed to be displaceable from track to track. On the other hand, with a two-track tape for several trick shots one after the other, the head group only needs to perform a back and forth movement. The essence of the invention is described using an exemplary embodiment. The figure shows an arrangement for two sound tracks on a tape 13, so z. B. above and below, with a playback head 14 only responds to an upper sound track, from where the signal voltages are fed to an amplifier 15 with a listening device 18. This upper track is now not changed when the belt 13 moves forward. The second track at the bottom runs past the erase head 16 to the recording head 17, via which the signals picked up from the first track at 14, mixed with new recordings, are transferred to the tape 13 on the lower track. The signals sampled at 14 are additionally combined in the mixer 19 with the signals picked up via the microphone 20, and then fed to the speaking head 17 in amplified form in 21. The first, upper track remains on tape 13, while the mixed recording is then recorded on 17 below. If you want to listen to the lower track now, all you have to do is change the settings of the heads from above and below. The playback head 14 then scans the lower, second track in the same running direction of the tape 13, while a new combination of recordings can be recorded in the first, upper track by means of the erase head 16 and recording head 17. In this way, any combination of recordings can be achieved in a very simple manner, with high quality of the recordings and the use of only one magnetic recorder. P A Ϊ Ii N T A N S P R Ü C H E: 1. Procedure for the combined recording of several individual performances on a magnetic sound track in a recording-playback device, characterized in that a first is already in a track recorded performance after scanning electrically in a manner known per se mixed in a mixer amplifier stage (19) with other electro-acoustically recorded performances, is recorded as a new track next to the undeleted track of the first performance. - 2. Arrangement for performing the method according to claim 1, characterized in that the Recording of combined sound recordings as a new track in the same process next to only one with a playback head (14) scannable sound track on a further from erase head (16), recording head (17) and, if applicable, the existing head group provided with playback head takes place. 3. Arrangement according to claim 2, characterized in that the recording is combined Sound recordings are to be put into operation in particular by means of a push button, in such a way that push button and the switch it actuates automatically when the device returns to its rest position are traceable. 4. Arrangement according to claims 2 and 3, characterized in that each one track Associated head groups of magnetic recorders are designed to be displaceable from one track to another or are optionally adjustable between several audio tracks. 1 sheet of drawings © 909 607/186 8.59