An audio processor, also known as a digital processor. The digital processor is the processing of the digital signal. The internal structure is generally composed of the input department and the output department. The functions belonging to the audio processing department are generally as follows: the input department generally includes, input gain control (INPUTGAIN), input equalization ( Several parameters are equalized) adjustment (INPUT EQ), input delay adjustment (INPUT DELAY), input polarity (also known as phase) conversion (put polarity) and other functions. The output department generally has signal input distribution routing (ROUNT), high-pass filter (HPF), low-pass filter (LPF), equalizer (OUTPUTEQ), polarity, gain (GAIN), and delay (DELAY). ), limiter start level (LIMIT) and other functions.
Features
The digital processor input function introduces the input gain: controls the input level of the processor. Generally adjustable range is around 12 decibels.
Input equalization: Most digital processors use 4-8 full parametric equalization. There are 3 internal adjustable parameters, which are frequency, bandwidth or Q value and gain.
Input Delay: This function is to make some delays when the input signal of this processor is entered. Generally, the overall delay adjustment is made when the processor and the speakers it controls are used as auxiliary.
Input polarity conversion: It can change the polarity phase of the whole processor between positive and negative, saving you from changing the line.
Digital processor output function introduction
Signal input distribution routing (ROUNT): The function is to let this output channel choose which input channel to accept the signal, generally can choose A (1) input, B (2) input or mixed input (A + B or mix Mono), if you choose A,
Then the signal of this channel comes from input A, and does not accept the signal of input B. If A+B is selected, then there will be a signal coming in this channel regardless of which signal is present in A or B.
High-pass filter (HPF): This is the lower limit of the frequency used to adjust the output signal. It is like adjusting the lower crossover point of the speaker. The internal is usually composed of three parameters, one is the frequency, which is used to select the desired lower frequency limit. The other is the filter form, there are generally three kinds, LR, BESSAL, butworth, if you don't understand, you can choose LR, the third parameter is the filter slope, generally 6,12,18,24,48dB/ OCT is a few, too deep, I have not said a few, this slope means that the larger the value you choose, the cleaner the score.
Low Pass Filter (LPF): It is used to adjust the upper frequency limit of the output signal, just like controlling the upper crossover point of the subwoofer. The internal adjustment content is the same as HPF.
The combination of HPF and LPF is a bandpass filter, like an external 3-way speaker. The crossover point is 500/3000 Hz, then the LPF of the bass channel is 500, the HPF of the midrange is 500, and the LPF is 3000. The HPF of the high-pitched channel is 3000, the filter format is LR, and the crossover slope is 24, which is generally correct.
In addition, some processors combine the filter form and the crossover slope as options.
Output equalization is generally the same as input equalization, except that general output equalization is only parametric equalization, and there is no option for equalization.
The output polarity adjustment is the same as the input section. It is used to convert the polarity of the output signal. Some processors also have a phase angle (PHASE) adjustment at the output. This is a bit deep, I will not say a few words.
Output a true limiter: generally there are 3 parameters adjustable, which is the start level, start time and recovery time. The adjustment of the startup level is based on the characteristics of the amplifier and the speaker. Generally, under normal circumstances, the control does not allow the amplifier to emit a red light. The startup time and recovery time are selected according to the frequency, the low frequency is slowly recovered with a slow start, and the high frequency is quickly recovered with a fast start. , the middle frequency is in the middle.
Car Phone Holder,Mobile Holder For Cars,Mobile Phone Holder For Dashboard,Mobile Phone Holder For Car Dashboard
Ningbo Luke Automotive Supplies Ltd. , https://www.car-phone-holder.com