The “Punch” Factor with Synthesizers

What exactly constitutes “punch”? Find out here

by Craig Anderton

We all know a punchy recorded sound when we hear it—but what exactly constitutes “punch”? It seems that perhaps punch is something that can not only be defined, but quantified.

This all started because years ago, I wondered why seemingly every musician agrees that the Minimoog has a punchy sound. Then, when I started playing a Peavey DPM3, several people commented that my bass patches had a punchy sound, “like a Minimoog.” Clearly, the technologies are totally different: one was analog, the other digital; one used voltage-controlled oscillators, the other sample playback. Yet to listeners, they both shared some common factor that was perceived as punchiness.

Analyzing a Minimoog bass line revealed something interesting: even with the sustain set to minimum, there was about 20-30 milliseconds where the sound stayed at maximum level before the decay began. There is no way to eliminate that short period of full volume sustain; it’s part of the Minimoog’s characteristic sound.

I then looked at the DPM3’s amplitude envelope and it exhibited the same characteristic—a 20-30 ms, maximum level period of sustain before the decay kicked in. Also, both instruments had virtually instantaneous attacks. Could this combination be the secret of punch?

For comparison, I then checked two synths that nobody considered punchy-sounding: an Oberheim OB-8, which is generally characterized as “warm” and/or “fat” but not punchy, and a Yamaha TG55. Both had fixed attack times, even with the attack control set to zero, that lasted a few milliseconds. I also recalled some experiments ex-Peter Gabriel keyboard player Larry Fast ran in the mid-70s, when he was curious how fast an attack had to be for a sound to be “punchy.” His research indicated that most listeners noticed a perceptible loss of punch with attack times as short as one or two milliseconds.

So it seems the secret of punch is that you need an extremely fast attack time, but you also need a bit of sustain time at maximum level. This sustain isn’t long enough to be perceived as sustain per se; it’s more of a psychoacoustic phenomenon.

Wondering if this same technique worked with other sounds, I took an unprocessed snare drum sound and tried to add punch by normalizing each cycle to the highest level possible for the first 20-30 milliseconds. Comparing the processed and unprocessed sounds left no doubt that the edited version had more punch.

When I designed the Minimoog Expansion Pack for Rapture, I made sure that where appropriate, the envelopes had that characteristic Moog attack (Fig. 1). Note that the second node sustains the sound for 27.5 ms. Rapture’s tight attack time and ability to create “high-resolution” envelopes made it easy to add punch.

Fig. 1: Adding the “punch” factor to a Rapture Minimoog patch. Continue reading The “Punch” Factor with Synthesizers

SONAR X3 Clinic by Craig Anderton – Berklee Online

In case you missed the Berklee Online Webinar with Craig Anderton (March 31st, 2014) – here is the video in it’s entirety! Craig outlines some of his favorite topics including:

  • The MIDI advantage for songwriting
  • Using loops for both songwriting and EDM
  • Speeding up workflow to prevent “inspiration atrophy” (effects chains, track templates, browser techniques, etc.)
  • Creating your own mixer architecture
  • Using “spot” timing correction to tighten timing without destroying feel
  • How to make amp sims sound great (e.g. effects chains)
  • Mastering in SONAR

Learn more about SONAR X3

Free SONAR X3 Clinic by Berklee Online [March 31st 2014]

Innovative Music Production Techniques with Cakewalk SONAR X3

When: Monday, March 31 at 4:00pm ET
Length:
30 minutes

Next Monday, join Berklee Online for an in-depth online clinic with Craig Anderton, a renowned music technologist and producer, and Chief Magic Officer for Gibson Brands.

Learn how to create, edit, master, and more using SONAR X3 Producer.

 

Topics for this Open House will include:

  • The MIDI advantage for songwriting
  • Using loops for both songwriting and EDM
  • Speeding up workflow to prevent “inspiration atrophy” (effects chains, track templates, browser techniques, etc.)
  • Creating your own mixer architecture
  • Using “spot” timing correction to tighten timing without destroying feel
  • How to make amp sims sound great (e.g. effects chains)
  • Mastering in SONAR

Sign-up here