Any specific, audible and perceptible sound recorded in a certain storage preface, which is replayed by multiple groups of speakers behind and around the film screen or TV screen after dissemination, and can convey certain artistic information, can be called the sound in film or TV art works, referred to as film and television sound for short.
At present, the scientific classification method of film and television sound is to divide the sound elements in the works into three categories: speech, music and sound. Each category can be subdivided into several sub categories according to their own artistic characteristics (such as subjective speech / objective speech, sound source music / silent source music, action sound / natural sound / traffic sound / special sound, etc.).
How are these sounds created?
Film and television recording technology is an important manufacturing process to ensure that film (television) sound designers fully reflect their requirements for film (television) sound design. Therefore, how to record all kinds of different sound components in movies and TV perfectly and with high quality has become an important skill work for recorders.
A recording process with smooth connection not only needs to be ensured from the criteria of skill manufacturing, but also needs to be gradually improved in creative practice, so that this film recording process can meet the manufacturing requirements of different recording skills. Mr. Fan today focuses on the recording technology of feature films. The animation is more special because it does not need the sound of the same period, and the animation sound is created in the later stage.
Xiaobian doesn't understand. Why only tell feature films? After listening to Mr. Fan, I learned that in China, documentary recording is often easy to be ignored, so today it is mainly about the recording technology of feature films.
Process flow of film recording technology

Recording synchronization is the first step in the skill of simultaneous recording, which is often divided into single system and dual system. Single system pictures and sounds are recorded on the same carrier and are often used for independent photography, film news or documentary. The advantage is convenience, but the disadvantage is that there can be no problems with sound and picture, which is time-consuming. The dual system separates sound and painting, and their respective division of labor is not disturbed. If you take photos on site, you can choose excellent composition for ten times, which can save time cost and is conducive to editing.
How to synchronize the two systems of sound and picture separation? Recording synchronization mainly uses "crystal oscillator synchronization". The sound and picture synchronization is achieved by linking the picture through crystal oscillator frequency stabilization. Also, the time recorded by the time code generator of "Aton synchronization" camera is consistent with that of the recorder with SMPTE time code. When the picture is transferred to the workstation together with the sound file, the time code corresponds to synchronize the sound and picture.
In the stage of sound design, after the director gets the script, he will watch it with the recording engineer at the same time. At the same time, the sound engineer saw the script and told the director all the sound schemes he could think of, such as what the sound of the scene was, whether it was quiet or lively. The second is the character. The voice of the character should be what kind of mood, what kind of sound should appear, and tell the director that if the director approves, the demand should be passed on to the actors. The third is the requirements for equipment. According to the needs of the script, formulate the required equipment and manufacture the recording discussion.
Recording equipment
Monitoring headset: it will restore the original appearance of the sound, remove the beautification, and it is easier to find problems.
Wireless microphone: generally, it's best to stick it on your body and clothes. Can use strong glue to stick to clothes.
Sound pickup equipment: generally strong pointing, as long as the sound can be picked up in one direction. In order to identify the sound more accurately. There are also two-way ones, which are often used in interviews.
Recording equipment: Alton recorder, the best recorder in the industry. The general price is more than 50000. There is a pusher to control the loudness of each track. This can make sound directly on the video recorder.
Simultaneous recording
Simultaneous recording：现场放音。一般歌舞片都是现场放音。现场放先期录音的音乐，不过先期录音只对歌舞片有作用，作曲家写好了音乐，现场放出对口型。
Article source: Jiangmen film and television recording manufacturing http://www.sjttv.com