Back to basics – audio recording : Equalizers

Back to basics – audio recording : Equalizers

November 18, 2019 0 By Kailee Schamberger


Hi and welcome to Le Studio Marco Primeau this is the third video of back to basics audio recording series today we talk about equalizers if you haven’t seen the first two videos, please click on the link in the description I I love doing those videos, but I need your help. Please click on like and subscribe What exactly is an equalizer ? It’s a software or an art where that allows us to adjust the level of certain frequencies of an audio signal What are audio frequencies The human ears are able to interpret a wide range of sounds those sounds are vibrations traveling like waves in the air Depending on the type of sound the waves can be longer or shorter, and they are called frequencies Of course most sounds are combinations are the multitude of waves with different lengths To help quantify them frequency numbers have been assigned to different length of waves as names according to how long they are a Low frequency will add a smaller number name and a high frequency will have a higher number name for example 60hz And now 600 Hertz And again 6khz Back to equalizers We all have them in our lives somewhere the most commonly known are the tone adjustments or Bass and treble we see in most audio systems in our cars Home theatres Living rooms and even in our cell phones in the life of studio engineers equalizers act on the same principles But they have more precise and elaborate designs to match the needs of their critical jobs Used on live shows they are essential to avoid feedbacks But live or in studio They are the best tools to achieve a pleasing sound and more Importantly to allow us to ear every single instrument of a complex recording with multiple musicians Using an equaliser goes hand to hand with ear training if you haven’t seen my video on the subject Please click on the link in the description you will also find a link to my video mic placement your first EQ which Demonstrates that the placement of a microphone should be your first tool to achieve the sound you want In audio recording or mixing Equalizers are mostly used as corrective tools They can help correct the frequency balance in any audio signal The best thing to start with is to identify the frequency that needs to be corrected and then adjust its level It is recommended to use subtractive adjustments Subtractive adjustments were preferred by engineers since the creation of the first EQ Because electronic circuits that allow the frequency leveling were always introducing some phase shifting If overdone phase shifting will in turn create frequency cancellations and inaccuracies So cut before you boost is a good habit to have Nowaday with highend equipment and software’s we see more and more linear equalizers, which don’t exhibit the phase shifting phenomenon But both linear and nonlinear equalizers are still available to use in both hardware and software versions Alright now that you have an idea of what is an equalizer. Let’s see how it works, and what is its purpose? From the start of the video you’ve been seeing a spectrum analyzer image that shows the frequencies of the audio you ear in a visual manner This isn’t by mistake when starting to use an equalizer. It is sometimes hard to hear the subtle differences Seeing is a good starter help, but eventually you shouldn’t need it to work Let’s start with a few simple examples of how an EQ will affect the sound This is a untouched recording of my voice without any EQ applied This is my voice with some low frequencies removed This is my voice with some high frequencies removed Let’s make the adjustments to make my voice have a more radio like sound My voice is a bit nasal and the combination of the mic and room makes it sound like that My voice is a bit nasal and the combination of the mic and room makes it sound like that My voice is a bit nasal and the combination of the mic and room makes it sound like that My voice is a bit nasal and the combination of the mic and room makes it sound like that You are now our hearing the before EQ sound of my voice You are now hearing the after EQ sound of my voice So you’ve seen a bit how do it? if I find something not to my liking, I’m Going to try to pinpoint what by boosting some frequencies and then I sweep around to find what bothers me the most and I remove it or a part of it of course So that’s it for this video if you have any questions or comments Please put them in the comments below of course don’t forget to subscribe click on like and share this video