Signal Processors For Sound Defined
Audio recording seems simple from afar. Everyone can hear just fine, so they think they understand what it means to record. It’s akin to literate people believing they can all write well. It does not work that way, as you know. Making a quality recording involves a great deal of discernment. It means knowing what sounds you want and do not want, and being able to successfully filter out sounds you do not need.
Signal processors make this discernment and filtering possible and are typically used during the mixing and pre-mixing phases. The signal processors are vital in the proper set up of musical instruments. Collectively, they are used to define how the sounds of instruments are turned into a wave. Then the mixing is used to optimize the quality of the sound of the instruments.
Equalization, or EQs, is used throughout many processes to create balance among an instrument’s audio range from low sound to mid range to high. Equalization is commonly found as part of a mixing board, as the balance knobs on software.
Filters remove extra sounds that do not belong within the scope of a song or piece of music. It might include the buzzing of an amplifier or the clomping of a guitar pedal. The filter ensures clarity sound to come through by isolating the sound wave and then recalculating the wave.
After the instrument is captured by the software, reverberation is used. It inserts the normal reverberation that would occur in a live or natural scenario. It adds an emphasis to clear sounds.
If you need to experience echo, then you are looking for what is called delay in the signal processors. Delay formats are varied and provide a method to alter the background sounds of where the recording occurred. For instance, if you want to achieve the effect of being in the mountains or in a large room, you can make that happen for the musical recording.
Dynamic processing consists of various options and occurs at the beginning of the recording process. It involves the compression of the wave, where the highs and lows are limited. It keeps the sound to the middle range.
The next type of dynamic processing is called expansion. It is when the waves are given higher peaks that stray away from the middle. Limiting is yet another type of dynamic processing, which shortens the length of the notes. Noise gates round out the dynamic processing options. It ensures that certain types of sounds are not recorded at all. In particular, it cancels out unwanted resonance from an instrument.
Noise reduction dampens sounds that are evident during the recording process. That means that the noise reduction is performed at every step of the recording process. It is the ability to limit sounds and also to reduce both the lows and highs that are unwanted with specific sound effects. It is a way to ensure that the sound remains balanced without ever letting it get out of certain ranges in the first place. Making the signal processors work to support one another creates a symbiosis.
The main signal processors covered herein are used to control the entire recording process and the resulting sounds. The reason all of these signal processing tools are used is to create the effects. All of these different components makes it much easier to achieve the sound that you desire from beginning to the end of the recording process.