The Audio Masterclass Professional Course in Equalization

Confused about equalization? Ready to master all of its techniques and tricks? Start here…

The Audio Masterclass Professional Course in Equalization – Full online course leading to your Audio Masterclass Certificate on successful completion.

  • The problem: Equalizers, both hardware and software, come in a number of types and can have an incredible array of controls. To get the best from a vocal or instrument, you have to resolve any frequency balance issues, then go on to improve the sound towards perfection.
  • The solution: A twelve-module course that will show, explain and demonstrate how equalizers work, and how you can use them to advantage on vocals, instruments, and complete mixes.
  • Your achievement: An understanding, both broad and detailed, of how to get the best from your compressors, with relevance to both hardware and software.

This course is for you…

  • If you want to learn how to make professional recordings in your own home studio
  • If you can already operate your digital audio workstation (DAW) software and want to achieve mastery in audio knowledge and skills
  • If you only have the basic plug-ins that came with your DAW, or if you have a whole suite of exotic third-party plug-ins
  • If you want to follow a structured, fast-track, fast-progress course, rather than learn slowly by mere trial-and-error
  • If you’re serious about your music and recording, and want to use your knowledge and skills either at a hobby level, or you want to make music and recording your full-time career.

Gain great skills with great training

  • Twelve-module online course
  • Audio examples in every modules, all downloadable to keep permanently
  • 12 practical assignment projects
  • Assessment of your practical assignment projects (requires upgrade)
  • Tutor support
  • Student advice team
  • Complete in 12 weeks or spread your course out over up to one full year or longer.
  • Study when and where you like
  • Available worldwide (we have students in more than 120 countries)
  • Your Audio Masterclass online Student ID (you can use this to seek discounts on software and equipment)
  • Your Audio Masterclass Certificate on completion of your course
  • 30-day full-refund, no-quibble guarantee

Twelve modules – everything you need in equalization from start to finish

  • Filters (filters are different to regular EQ)
  • The parametric equalizer
  • Corrective equalization
  • Equalization for bass instruments
  • Equalization for drums
  • Complementary EQ
  • Equalization for vocals
  • Low-frequency EQ in mixing
  • Graphic EQ
  • Match EQ
  • Dynamic equalization
  • Acoustic equalization

How you will learn in your course

The Audio Masterclass Music Production and Sound Engineering Course works by online distance learning. We have students in more than 120 countries all around the world. All you need to come on the course is a basic home studio setup and an internet connection, and of course a strong desire to produce recordings of fully professional quality in your own home studio.

With Audio Masterclass, you will learn basic studio techniques, mixing and creative recording. Following completion of your course, you can go on to enroll in our Professional Courses with topics such as Equalization, Compression, Reverb & Effects, Mixing and Mastering.

Tutorials and videos

Course instruction is through world-class online textbook materials, audio tutorials, and supplementary video materials where appropriate. We show you the important techniques of audio that professionals use every day, and you can use yourself in your own home studio. All of the course materials are available online, and also enhancement learning materials including videos shot at Abbey Road Studios 2 and 3. You can print, save or download all of your course materials as you wish to keep permanently.

Audio examples

Our tutorials and videos are supported by a wealth of audio examples, which are also downloadable. We recommend that you load these examples into your digital audio workstation so that you can listen to them in exactly the same way as when you’re recording yourself.

Many of the audio examples will show you what you should aim to achieve, whether the topic is EQ, compression, mixing, mastering etc. Others will show you how things can go wrong – and we’ll show you clearly the difference between good audio and bad, and explain the reasons why.

Practical projects

The best way to learn audio is to *do* audio – recording, editing, processing, mixing and mastering. And don’t forget the importance of close, attentive listening. The more you do it, the better you’ll get.

So the Audio Masterclass Music Production and Sound Engineering Course features a range of practical projects relating to the modules of the course. The practical projects will set you a task to complete, show you how to do it and point out what could go wrong. And when you have completed your project, you can compare your work with our examples – many of which are created by Audio Masterclass students.

Student advice team

All Audio Masterclass students have access to our Student Advice Team for the full duration of their enrollment. You can ask questions on any of the course topics and receive a personal response.


Because Audio Masterclass works by distance learning, you can learn entirely at your own pace. There is no set schedule and you can move quickly or slowly through the course as you wish and take breaks at any time.


Your Audio Masterclass enrollment will be valid for one full year, which is easily more than enough time to complete your course. You can save, print or download all of your course materials to keep permanently.

Your Audio Masterclass Certificate

Although no certificate can guarantee you a job in the audio or music industry, you will want something to commemorate your success on your Audio Masterclass course. Your course will lead to the award of your Audio Masterclass Certificate, which becomes available for download when you have completed 80% of your course or more.

Diploma upgrade option

As well as your Audio Masterclass certificate, it is also possible to achieve the Audio Masterclass Diploma. This is a traditional paper diploma with our signature, stamp, and seal, sent to you by mail anywhere in the world.

The Audio Masterclass Diploma is assessed through practical assignment projects, one in each module, that are submitted online for assessment.

When all of your practical assignment projects have been assessed to a satisfactory standard, your success on the course will be noted and your Audio Masterclass Diploma prepared and mailed to you.

Assessments of your practical assignment projects leading to your Audio Masterclass Diploma on successful completion of your course is a paid-for option, at $277 USD in addition to your regular course fee. You must be enrolled on an Audio Masterclass course before adding the Assessments and Diploma upgrade.

Our experience in audio education

Audio Masterclass has experience in audio education going back to 1986. We have been running online courses since 2001 which is longer than any other audio training provider on the web.


At Audio Masterclass we want to give you the fastest, most effective route towards a professional standard of work in your own home studio – a standard that is fully equal to professional studios and commercial releases.

We do this through effective, comprehensive instruction through tutorials and/or videos, audio examples, and practical projects that relate closely to real-world professional practice.

If you want to make fast progress, then Audio Masterclass is here to help.

What you will learn in your course

Your Audio Masterclass course includes a massive wealth of learning content, audio examples, and practical projects. And as well as all the knowledge, skills, and experience you will gain, your Audio Masterclass Certificate will be available for download on completion of your course. (Diploma upgrade also available.)


Module content: Low-pass filters, high-pass filter, band-pass filter, all-pass filter, cut-off frequency, slope.

Project – Filters aural exercise: This assignment will ask you to match the filter settings of example audio segments, including filter type, cut-off frequency and slope parameters. The purpose is to help you develop an aural understanding of the effects of these controls.

Parametric equalization

Module content: A further introduction into the controls of the equalizer including gain, center frequency, Q and bandwidth.

Project – Equalization aural exercise: This assignment will ask you to match the equalization settings of example audio segments, including EQ type, center frequency and gain. The purpose, once again, is to help you develop an aural understanding of the effects of these controls.

Corrective equalization

Module content: Equalization can be used to correct an imperfect frequency balance, or improve a vocal, instrument or entire mix that is free from problems but could be better. This module will cover corrective EQ to mitigate problems in frequency balance.

Project – Using corrective EQ to fix problems in frequency balance: The assignment will set problems of various kinds that can be corrected or improved using EQ. These problems include a demonstration of notch filtering and narrow-band noise filtering, hum removal, wide-band noise, and unwanted resonance.

Equalization for bass instruments

Module content: Although every frequency band is important, controlling bass is essential as it is necessary to have a full and deep bass response, yet not to the point that a listener would be uncomfortable or their speakers damaged.

Project – Balancing low-frequency content in bass guitar recordings: This assignment provides demonstration files, one where the bass content is too much, one where it is too little. The task will be to optimize both recordings and make their subjective bass content subjectively similar.

Equalization for drums

Module content: A good multitrack recording of drums depends strongly on good microphone selection and placement. However it is usually possible to improve the sound of the individual drums and overheads further through EQ. This module will explore equalization of individual drums and the hihat cymbal.

Project – EQing individual drums: This assignment will ask you to make the kick drum more characterful in various ways , and also less characterful. We will ask you to remedy a defect in the snare drum. We will also ask you to isolate the hihat from the other components of the kit so that it may be controlled more effectively.

Complementary EQ

Module content: Often there may be two instruments trying to grab the same space in the frequency spectrum, with the result that neither can be heard clearly. Using complementary EQ it is possible to give the instruments different frequency balances so that they work well together.

Project – Separate two electric guitars using complementary EQ: This assignment provides demonstration material from some of our featured artists. Two guitars play simultaneously and the assignment will ask you to use a variety of complementary EQ techniques to make each stand out clearly.

Equalization for vocals

Module content: Of all sound sources, vocals are the most important. Clearly it is essential to get the best recording possible, but often EQ is used to correct any defects in the vocal frequency balance, and to provide improvements that help the vocal work well in the mix.

Project – Demonstration of EQ for vocals: This assignment will ask you to use a variety of methods to EQ a vocal recording to cure any inherent faults and to enhance the vocal further. The assignment will demonstrate the problems visually using spectrogram images so that you can see the issues as well as hear them.

Low-frequency EQ in mixing

Module content: In mixing, the bass content should normally be provided by the bass instruments. If other instrument have too much low-frequency content, then the sound will be muddy and unclear. It is often desirable to blend the low-frequency content of non-bass instruments so that their frequency balance connects with the bass instruments but does not confuse the sound.

Project – Balance a mix using only low-frequency EQ: This assignment is unusual in that it provides a multitrack recording in WAV format where the instruments are already balanced in level, but not in their bass content. The assignment will ask you to improve the mix using only low-frequency EQ. The results will be illuminating.

Graphic EQ

Module content: Although not so common in recording, graphic EQ is often used in live sound. No professional course on equalization would be complete without an examination of the benefits and issues of graphic EQ.

Project – Create a graphic EQ in your DAW: The assignment will ask you to use filters to separate an audio signal into bands of frequencies. Just like a graphic EQ, you will be able to raise or lower each band in level to alter the balance of frequencies. Even if you don’t have a graphic EQ plug-in, this assignment will provide clear insight into the process.

Match EQ

Module content: Match EQ is the process of making the frequency balance of one track similar to that of another, usually a commercially successful recording. Although there are plug-ins that claim to be able to do this, in reality they often don’t even come close and it requires attentive listening by a skilled engineer to achieve a good match.

Project – Match EQing a track to sound similar to a reference track: In this assignment you will be given a mix that is balanced in level, but requires treatment with EQ. You will also be directed to a very successful commercial release, the frequency balance of which you are asked to imitate. This is a difficult assignment, but it is extremely relevant to professional production practice.

Dynamic equalization

Module content: Standard EQ changes the levels of different bands of frequencies regardless of whether the signal is quiet or loud. With dynamic EQ you can apply equalization only when a signal is loud or quiet, for examples when a vocal becomes too harsh during loud singing.

Project – Application of dynamic EQ using only standard EQ and compression plug-ins: You don’t need to have a dedicated dynamic EQ plug-in to use this technique. With the proper knowledge, given in the assignment, you can do this with standard EQs and compressors.

Acoustic equalization

Module content: Although we normally think of hardware units and software plug-ins for equalization, it is possible to EQ a sound purely acoustically. This can lead to interesting and novel effects that are impossible to achieve in any other way.

Project – Demonstration of acoustic equalization: This assignment will ask you to make recordings of a variety of acoustic sound sources, which could be as simple as speech. But rather than record in the conventional way, you will be asked to place the sound source or the microphone, or both, in a resonant cavity, this creating acoustic EQ. It’s simpler than it sounds, and it is really interesting as a finale to the course.

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Sample page from the Audio Masterclass Professional Course in Equalization

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About Course Designer David Mellor

Audio Masterclass Course Director David Mellor

David Mellor is the founder and Course Director Audio Masterclass, currently residing in the beautiful countryside of Oxfordshire in the United Kingdom. He has worked in audio education since 1986 in hands-on training, lectures and online. David Mellor holds the degree of B.Mus (Tonmeister) from the University of Surrey where he studied music, piano performance, acoustics, electronics, electro-acoustics and recording.

Live Sound and Recording Engineer

David Mellor worked as theatre sound engineer at London’s Royal Opera House, with responsibilities including sound design, front-of-house operation, stage monitoring and electronic design satisfying the likes of Luciano Pavarotti, Placido Domingo, Dame Kiri Te Kanawa and Karlheinz Stockhausen. David Mellor toured with the Royal Opera Company to the Dorothy Chandler Pavilion, Los Angeles, USA; the Odeon of Herod Atticus, Athens, Greece; the Sejong Center, Seoul, South Korea; the Bunka Kaikan, Tokyo, Japan.

Musician and Composer

Since 1985 David Mellor has had more than 1000 works published in the field of production music, including the Chappell and Carlin music libraries (now combined into Universal Publishing Production Music) and his own music library for which he has produced seventeen compact discs. Notable uses of his music include the BBC’s Horizon, Fahrenheit 911, and The Oprah Winfrey Show.

Writer and Educator

David Mellor has been actively involved in Audio Education since 1986, teaching students of City of Westminster College and Westminster University, and also returning to lecture at Surrey University. He has also written for magazines including Sound on Sound, Audio Media, Studio Sound, Home & Studio Recording, Performing Musician, Sound & Video Contractor, Recording Engineer & Producer. He has also written four books on audio and video technology. David Mellor now specializes in online audio education and has been Course Director of Audio Masterclass since 2001.