How to use the incentive for improved audio quality?

In the existing electronic field production (EFP) audio system, how to enhance wireless microphone audio activity, improve analog tape audio clarity, the improvement of the human voice of hissing audio processing, etc., is of great concern to professional workers. In practice, we use auditory stimulation for improving the system of processing capacity, improve the audio quality of EFP. Actuators and system access at present, the incentive for audio signal processing, auditory actuator (Aural Exciter), incentive processing software and incentive circuit. Which professional hearing actuator is more suitable for EFP. Aural Exciter excitation of the harmonic signals through simulation design, may be assimilated to the artificial reverberation simulation of acoustic characteristics. Therefore, you should simply put this artificial harmonics generation as the original signal "untrue," and is the equivalent of distortion. Actuators are designed to restore the audio signal is lost by the harmonic composition, effectively extended high frequency bandwidth and improved signal to noise ratio, increasing clarity and sound reduction. Furthermore, these harmonic level is very low, the signal power has little to no impact. Because of the advantages with the actuator, using it on signal processing, you can improve the sound quality. Practice we use Aphex Aural Exciter-Ⅲ-250 (Ax-Ⅲ-250) professional hearing actuator. Ax-Ⅲ-250 is a dual-channel processor, each channel includes the same two audio path, namely the main signal path (Main Path) and side chain by encouraging signal path (Sidechain Path). The main path from the input level of the audio signal directly to the output level, without any processing; side chain path contains all of the incentive for the "heart" of the circuit. Two-channel audio signal in addition circuit level mixed, mixed by Mix function control. Ax-Ⅲ-250 with strong audio processing capability, and can effectively eliminates noise and distortion. Regulation parameters Exciter's main control parameter has a threshold, tuning, harmonic content, audio and mixing ratio, which combined produce the high-frequency harmonics for recovery. Ax-Ⅲ-250 main control are: (1) the noise threshold (NR Threshold). The control provides the threshold setting range is-60 ~ + 30dB, aimed at inspiring and silt noise level processing circuit, and noise reduction. (2) tuning point (Tune). The control set side chain path in the second order high-pass filter frequency point of rising edge and the establishment of incentive working band, frequency control range 700Hz ~ 7kHz. (3) peak of (Peaking). The control point for tuning provides a cushioning effect. Its control from smallest to largest, the tuning point frequency of preemphasis gradually increases. At the same time, in tuning point pre-emphasis, also a little notch, it will peak in the control of increase and deepen. As shown in Figure 1. (4) zero compensation (Null Fill). Zero compensation control's role is to regulate a bandpass signals, the signal to the side chain path in high traffic numbers, compensation for the loss of "phase". In the side chain path signal a certain delay, this causes transient waveform distortion, so sound louder. At the same time, it will output the equilibrium curves on tuning point appear near the small notch, the notch on the tuning frequency to increase near the point of allowing a higher frequency band signal increased. This effect is often necessary. But sometimes in order to compensate for the loss of phase, with zero values for compensating control to increase, thus enhancing the voice of the expressive and realistic. (5) the amount of harmonics (Harmonic). Tuning control is used to adjust the amount of harmonics. Harmonic is through the side chain path in the VCA modulation process, it will not be on the side chain of signal level in the path. Internal harmonic generator produces a harmonic components based on a complex set of simulation calculations to take into account the transient and steady state sound quality and the corresponding original signal amplitude. If the control of the harmonic components of the audio control of even and odd harmonics ratio is improved. Moreover, the harmonic not harmonic distortion, because they are smart, and formed a power envelope, making it the ultimate sound quality improvement instead of deterioration. (6) audio (Timbre). Audio control is used to set the type and arrangement of harmonics, which is odd, the even harmonic proportions. Even harmonic more voice sounds soft, odd harmonics up voice sounds sharp. (7) mixing ratio (Mix). Mixing ratio control role, will go through encouraging enhanced signal mixed with the original signal, control range from 0dB (i.e. zero gain) to + 14dB (represents the threshold on the promotion of the signal received 14dB). In addition, Ax-Ⅲ-250 also provides a radio side chain path (Solo) feature. System access actuator access generally come in two forms: threaded type (In-Line) and side chain (Sidechain). As shown in Figure 2. The majority of occasions with threaded method will inspire the reader access between two devices. A side-chain received method, to use Solo function to disconnect the main path of the audio signal, only pure stimulus signals into the mix, the mixture of the original signal on a mixer and pure incentive effect signal. This is important. The Add method is equivalent to the actuator's Mix control to move to a mixer, and mixer itself is a mixing desk, manipulate it more convenient, flexible, precise tracking control of auditory effect. Practice using a Ax-Ⅲ-250 of dual-channel, simultaneous processing of EFP in multi-channel audio signals. As shown in Figure 3 the actuator access methods of the audio system. Where CH1-channel assigned to the human voice, CH2 channels allocated to the music. At this point the auditory Stimulator is a form of link to the next, the program does not change the original process, signals in accordance with the original channel transmission and hybrid; at the same time provide two pure incentive effects, these harmonic and fed into the actuator of the source signal on the music and the dynamic context. The original signal and pure stimulus signals only in a mixer for mixing provisioning. Its concrete practice is a set with CH1 control referenceNumbers from wireless microphone of FM audio or voice, CH2 to another set of control parameters with the sound quality improvement of music or other sounds (such as electro-acoustic band, etc.). As a result of these programs is the source of the sound quality is inconsistent, so according to the material of the amount of incentive to add decided, keep track mixing ratio. The way for the majority of EFP, safe and reliable.