【 Weak current College 】 professional concert sound engineer process---Power By 【 China power house network 】

Professional performance audio master workflow
1. perform task 1 received, to the responsible person asked performance objectives, program type, is there a dress rehearsal; 2, inspection equipment, wire and accessories (normal use); 3, acquisition-related objects (such as: wireless microphone battery, serial number stickers, etc.). 2. field installation 1, power supply, avoid and lighting power received; 2, the placement of total console: to display in the front side of the stage and could hear clearly PA signal range location is adequate; 3, speakers at the mercy of the way, according to the audience area specific space design (can be centralized or decentralized); 4, line distribution, weak signal lines don't and strong signal lines come together. 3. sound system test 1, determine the device connector is properly connected, check the equipment pusher, knob is in the correct location. And then power on the device if the power supply of the rink to electricity; 2, turn off power amplifier volume output potentiometer, playing a familiar music signals (slightly in a mixer of parametric equalization adjustment) will sound mixer total output (return to listen to the output) vertebral child pushed to 0db, signal path to vertebral child 0db, adjust gain, so that the sound mixer output level LEDs are 0db (signal the best output status). Check the sound mixer, peripherals, power amplifier of signal indicator is displayed correctly; 3. slowly open amplifier's volume potentiometer (repeat each amplifier), check the corresponding speaker is normal PA (also check for the proper functioning of all cells); 4, pull down the sound mixer total output (return to listen to the output) volume all vertebral, amplifier volume potentiometer to maximum, then the total output volume mixer and return to listening to vertebral volume to vertebral slowly 0db, in the audience area (with stage) to check whether the balance of the central PA (phase is normal), at the same time determine the music signal sound pressure in the audience area (with stage) the adequacy of the location; the four part test 1, audio sources, first accompaniment music channel test: adjusting the sound mixer music signal channel parametric equalization, to listen to second audio signal, determine its range high school low sense of depth. 2, the first vocal microphone channel test: adjusting the sound mixer music signal channel parametric equalization, check microphone pick-up sensitivity, observation of the mixing console signal indicator, indicator is lighting if the signal reaches a certain sound pressure, combined with the reverb effect and the accompaniment of music with songs or speech for preliminary debugging to determine the human voice, music, effect probably scale. 5. audio processing equipment of adjustment 1. Equalizer adjustments: (the entire sound system-critical adjustment to link it here) equalizer has two important effects make up the acoustic field flaw caused an imbalance of frequency response, first adjust the tone and the Suppression of the squealing sound feedback. Outdoor places Equalizer adjustments should ensure that no whistle for the tone adjustments. Follows: the main PA, back to listen to the system to normal volume position (when the required sound pressure), the equalizer frequency all to 0db, and ready to control the receiver channel push rod (so that when a whistling sound when a frequency attenuation pull down). ①, holding a microphone on the stage moving constantly in search of Whistler separately by frequency. ②, place the handset to a location on the stage (simulation of the actors performing arrival location). To the main speakers (return to hear the case), and slowly turn up the microphone volume, looking for Whistler.
Will seek to screech frequency down, decay into normal volume does not occur after the whistle to start the second for the human voice and the music signal tone compensation. (After adjusting the equalizer, the tone will be substantial change, you need to perform and listen and feel, combined with a mixer of parametric Equalization and other peripheral equipment, careful and patient second adjustment until you think satisfaction. 2. press for adjustment: it has two important effects: first, reducing the dynamic range of the source program, prevent the distortion of the signal of overload and, on the amplifier and speaker unit has a protective effect. The second is to improve the program loudness (auditory characteristics can clearly feel). In small and medium-sized outdoor performances, it is recommended to adjust: noise gate is placed between the open-to-20db, compression threshold level placed-10db to 0db, compression ratio is placed between the 2: 1, action time placed 10ms, release time placed 0.3s. (Specific adjustment should be performed by the site system and needs. 3. effects of adjustment: with one voice, adjust the various independent, mixing effect programs, one by one to listen, record can sing there in performances where use, determines its signal input output, selected 1 ~ 3 appropriate results, according to the field required, the performance may at any time from the machine out of use. 6. total system amplifying test when the device to adjust the overall sound quality check 1, music signal requirements should be, have richness, treble not shrill, bass could not be muddy. 2. voice signals (accession effect) requirements should be round, plump and levels, rich presence. Different music and different people that will make sound effects produce different changes, you should be in the mixer on parametric equalization for the appropriate promotion and attenuation. 7. walk a group of people (rehearsal) 1, collecting the music accompaniment, and arrange and classification. (Grassroots show mostly amateur performances, self-directed, accompaniment with variety, therefore, before the performance must be arranged and classified: corresponding program with sticker number, will be collected with the accompaniment of the program and category, such as a tape with VCD disc, a T v said, and so on); 2, the identification of male and female presiding over the microphone, singing microphone and sticker number; 3, asked the dancers, determine whether there is "appeared modelling" (such as whether to lay the dance style and then play music, or play music performers to appear), and in program record; 4. Special requirements for actors (such as essays required to play the music within a certain time; singer lip-synching, but in the half-way to speak; the actors in the Taiwan side program commentary, etc.), should be detailed in the program, and to arrange for a staff member for assistance. 5, to show the use of microphoneNumber, microphone stand placement for confirmation, in program record and arrange for a staff member for assistance. VIII. preparation before performances: 1, ask the responsible person, identified by several leading speech on stage, and arrange for the receiver. 2. ask the person in charge, to determine the appearance of music and the end of the music, and played music with the host agreement; 3, DC table check wireless microphone battery power, and prepare a set of spare batteries; 4, check the music accompaniment, make sure the "PLAY", 1 seconds with music signals; 5, earnest analysis program in order to see if there is a microphone allocation conflict and remove the microphone switch to "ON" position, the electrician adhesive bandage; 6, convening audio Division staff to arrange matters (e.g. arrangements for microphone and power of inspection, is responsible for the microphone stand with ease, programs with playback, etc.). 9. performance period: 1, note the number of the volume of the cylinder having a balanced, voice and music signals balance (performers different pickup distance, pronunciation of intensity can result originally debugged microphone volume appears to signal weak); 2, for the performance of the actors on the stage and suggests that the volume is insufficient, that system should be taken as a standard signal level, make reasonable adjustment; 3, silences, and concept developments and strain, if you are an actor, listen to the stage director; if there is equipment failure, quickly identified, reported to the stage Director in a timely manner and to take effective measures to "jiuchang".? sound world super Forum--information world, knowledge of the ocean! performed at 10, ends 1, will bring unity to the accompaniment of program officials; 2, the battery in the wireless handset.