AF’s Weblog

August 30, 2012

Tips for Controlling Vocal Sibilance

Filed under: Singing — Tags: , , , , , — audiofanzine @ 7:31 am

To read the full detailed article see:  Tips for Controlling Vocal Sibilance

Vocal sibilance is an unpleasant tonal harshness that can happen during consonant syllables (like S, T, and Z), caused by disproportionate audio dynamics in upper midrange frequencies.

Sibilance is often centered between 5kHz to 8kHz, but can occur well above that frequency range.

This problem is usually caused by the actual vocal formant, but can also be exaggerated by microphone placement and technique. This article will discuss some ways to control vocal sibilance, and keep the problem from becoming a musical distraction.

Sibilance at the Source (best read with sibilant whistle)

In phonetic terms, sibilance comes from a type of vocal formant called a fricative consonant. During these sorts of utterances, the airway (usually the mouth) is drastically constricted by two anatomical features, like the teeth, tongue, or palette.

This pressurization causes some amount of noise that forms the consonant sounds we would recognize from a phase like, “Sally sits sideways on the tennis trolley.” Sibilance is a very necessary feature of human speech, but when there’s (subjectively) too much noise created during these consonants, we get a very distracting harshness.

It isn’t really practical or productive to address micro-muscular vocal technique during a session, so your best bet to mitigate sibilance at the source is microphone selection and placement. Here are a few suggestions:

  • Every vocalist is remarkably different, so don’t pre-suppose that anything you’ve tried before will or will not work again.
  • Be sure to leave some space between your vocalist and the microphone. Twelve to eighteen inches would be a nice starting point.
  • A pop filter won’t do anything to help with sibilance.
  • Once you find a microphone and distance combination that helps, try angling the microphone downward 10 to 15 degrees to place the 0-degree axis toward the throat instead of the sibilant source.

Now let’s take a closer look…

Other Precautions

When you’re recording a vocal performance that may have a sibilance problem, resist the urge to compress the signal in the channel path. Over-compression can exaggerate sibilance. Instead, try using a fader to level the vocal performance, or just record with an adequate amount of headroom.

The same applies to the mixing process. Once you’ve done your best to control vocal sibilance, try using a fader and automation to maintain a consistent vocal volume in the mix. If you simply must instantiate a compressor on every vocal track, keep the attack time slow (> 30ms), and the ratio low.

Finally, don’t listen too loudly when you mix. That’s good general advice, but quality control issues like sibilance highlight its importance. Try a control room volume of 78-83dB(C) SPL. You might be surprised how much detail you’re suddenly able to hear.

To read the full detailed article see:  Tips for Controlling Vocal Sibilance

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July 6, 2010

The Emotional Cords: Vocal Health for Singers

Filed under: Singing — Tags: , , , , , , , — audiofanzine @ 8:32 am

As summer arrives, singers begin to worry about vocal health as summer is the season when most artists have most bookings. “Will I be able to manage all the upcoming shows without vocal fatigue?” The health of your voice is a serious matter: Your voice is a musical instrument that requires very special care, technical skills and constant practice.

Unlike guitar strings, vocal cords can’t break! Thus, they cannot be replaced. A good reason to take care of them! Vocal cords are muscles that need to be treated like any other muscle. Have you ever seen an athlete practice a sport without warming up? Without regular training or technique? Without muscle relaxation or a coach? Well, consider yourself a vocal athlete! The stage is your pitch. And like all athletes, you may get tired at times…

About Vocal Fatigue

A lot of physical, physiological, acoustical, and psychological factors can cause vocal fatigue. Among the most common symptoms are: changes in timbre, a deeper voice when talking, difficulties to reach high notes, quacks, cracks, unexpected pitch shifting (yodeling), hoarse, husky or breathy voice, soar throat or the sensation of lumps in your throat, partial or full aphonia…

If you carry on singing while having some of these symptoms, it can quickly lead to an injury or, unless you visit a laryngologist (voice specialist), other pathologies in the long run. Letting your voice rest can be a temporary solution. However, if your problems are caused by a bad singing technique and you don’t visit a laryngologist and a singing teacher, they will keep on coming back again and again.

Reasons for Voice Fatigue (a non-exhaustive list)

Breath, vibration and resonance?


Singing is a complex system that results from the combination of three stages: breath, vibration and resonance. An experienced singer combines all three stages harmoniously. When the breathing/vibration/resonance mix is not optimal, the larynx will compensate with intrinsic and/or extrinsic rigidness, hindering a good performance. In case you don’t remember, the larynx is an organ that connects the pharynx with the trachea and hosts the vocal cords. Its role is to transform air into sound. Thus, any additional rigidness is to be avoided.

Wrong or unsuitable singing technique

Some lucky people can sing intuitively without any singing lessons, but only a few have a good natural singing technique. For most singers, training their voice with a singing teacher or a voice coach is a must, regardless of their musicianship and music style. Good skills are crucial to keep your voice healthy, to sing without rigidness across the whole vocal register, to keep a well-balanced timbre, to be able to sing for hours without experiencing fatigue.

Lack of sleep

The only time when vocal cords fully rest is during sleep – when they decongest and regenerate. We recommend eight hours of sleep per day. But we are aware that long rests are hard to combine with life on the road. Specially when you have late shows and need to travel to the next gig location. Take a nap in the afternoon but avoid sleeping before live gigs. It could take the vocal cords more time to fully recover than the time you have before going up on stage.

Physical fatigue

When your body feels tired, your muscles have no energy, including your abdominal muscles and vocal cords. In this condition, it’s difficult to sing consistently.

The singer must sing dynamically and powerfully! Some of my students have realized that singing demands as much energy as doing sport. Thus, it is crucial to be physically fit. You know the saying: An ounce of prevention is worth a pound of cure! Be watchful during rehearsals and live gigs. Don’t slacken your dynamism. Your body must be in good shape. The slightest carelessness might prove fatal to your voice.

Song key

Sing within your own range, in other words, the notes you can sing easily. Do not confuse this with the vocal register, which includes all notes you can produce with your voice. Don’t strive to sing in a key that doesn’t match your range because it could be very dangerous to your voice. Singing should be as comfortable as possible. If uncomfortable, tell the musicians you are playing with and transpose the song key. Otherwise, choose a replacement song before going on tour to avoid having to change singer’s while on tour!

More me

“I can’t hear myself! Can you push me to the front of the mix? Otherwise, I’ll have to strain my voice and damage it!”

We have all heard or said this to the monitor engineer at least once. But what happens really? It is very important to have a good sound on the stage, which means you need to take time to make a good soundcheck in order for all musicians and singers feel comfortable and find their position within the band. A singer that cannot listen to his own voice will tend to strain it or shout to be able to hear himself. This is called vocal dysfunction.

To avoid this, don’t hesitate to use in-ear monitors, which provide a clearly better monitoring comfort while protecting your ears by filling up your auditory canal and attenuating external noise up to 18 or 25 dB. In-ear monitors might seem expensive but your ears and your voice have no price: trust me!

Visit an ENT specialist to have an audiogram done. That way, you can check if your monitoring discomfort isn’t directly related to some sort of hearing impairment.

Now let’s take a look at vocal illness…

Conclusion

Always listen to your voice and your body… Take the smallest signs of fatigue seriously. Don’t bury your head in the sand while waiting for your voice to come back. That’s a common mistake among singers who are afraid to face reality.

If your singing technique leaves a lot to be desired, you need help! Unless you settle for the perpetual state of losing your voice and waiting for it to come back again… until it doesn’t!

And don’t think these recommendations apply only to beginners. Even experienced singers need to check if their singing is still consistent. Within this context, a periodic visit to a qualified singing teacher is enough to control if your singing technique is fairly good so you can start a tour with one less worry.

Also think about visiting a audiologist or ENT specialist every two years. This medical check is painless and it will help reassure you about the health of your vocal cords. And you’ll get a free pic of them. 🙂

I wish you all successful live gigs!

To read the full detailed article see:  Vocal Health

October 14, 2008

TC Helicon VoiceTone Harmony-G review

TC Helicon VoiceTone Harmony-G - AudioFanzineTC Helicon’s Harmony-G: The Test
After having delighted singers with their Voicetone pedals, TC Helicon is trying to seduce guitarist/singers with a pedal capable of simulating vocal harmonies that follow your voice and guitar playing. Extraordinary as this may sound in theory, does the Harmony G keep its promises in practice? That’s what we’ll see in this test …

You won’t feel so alone anymore

Setting up live vocal harmonies has always been relatively complicated. A bad balance between the main speakers and the monitoring speakers will often cause out of tune vocals which will quickly get on the nerves of any audience. But there are worse situations! How do you get harmony vocals when you‘re alone on stage? Even if you have all the talent and determination in the world, your voice is still monophonic. Fortunately, TC-Helicon was thinking of singer/guitarists and singer/ pianists who play solo when they created two pedals allowing them to be, as if by magic, accompanied by two virtual singers who even know the set-list by heart! But how is this possible? It’s simple: the pedal, thanks to the guitar or keyboard that is plugged into the device, follows the chord progression, analyzes it and figures out the vocal harmonies that go along with your voice. That’s, roughly, the idea behind the Harmony G (guitar) and Harmony M (for MIDI, the keyboard is connected via MIDI). Sounds tempting doesn’t it? Being a six-string enthusiast myself, I naturally chose the Harmony G model for this test.

So I eagerly opened the nice looking box with the TC Helicon logo …

C Helicon strikes another strong blow by allowing singer/guitarists to have 2 virtual singers at their command. With its effects and its integrated tuner, the little box is like an audio Swiss-army knife. It will undoubtedly attract many musicians thanks to its ease of use, sound quality, solid construction and very realistic vocal harmonies. The Harmony G also offers small features which have been intelligently thought out (changing the reference tuning or Manual mode) and its few defects are quickly overlooked in light of how enjoyable it is to use. Watch out Crosby, Stills & Nash!

Convincing vocal harmonies
Very good mic preamp
Quality effects
Solid construction
48 V phantom power
Guitar through
Automatic mix of voice and guitar
Tone mode
Integrated tuner
Manual

The balance of guitar, harmony levels and effects not stored in presets
Needs AC adapter
Pressing both switches at the same time is not so easy
Sometimes hangs when changing chords

Read the complete review of TC Helicon Voicetone Harmony-G.

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