Mechanics of the Voice
In order for us to create sound and speech, there are several mechanisms and timely coordinations at play. However, we aren’t often intentional or conscious about these mechanics but instead just open our mouths and trust that a powerful consistent voice will come. As you may have experienced, this isn’t always the case.
Your voice is a coordinated system made up of four necessary components:
- Breath: The power source
- If you don’t have good quality and quantity of breath, there’s a slim chance your voice will sound full and consistent. Without optimizing your breath, problems usually pop up elsewhere such as excessive muscle engagement in the throat.
- Typical speech breathing is 1.5 seconds.
- You should take a breath about ever 8-10 words
- If when you breathe your chest excessively expands and your shoulders drastically move up, you’re likely breathing incorrectly.
- As you inhale, your abdomen, which is a muscle sitting in the bottom of the rib cage, goes down and out – as if it’s expanding like a balloon. On the exhale, the diaphragm passively moves in and up. The diaphragm needs to move in this way so the lungs have room to expand and then the diaphragm helps the lungs expend the air as you speak on the exhale.
- You should never feel out of breath while speaking but rather should always take a breath before you need it.
- When breathing during speech, try to inhale and exhale through your mouth. It allows for a quicker more supportive breath compared to the nose
- As we speak, we are breathing out. To test this, put your hand in front of your mouth as you say something. Do you feel warm air? If you don’t, this may be a sign that you’re holding your breath while speaking.
- Vocal Folds: The sound source
- Inside your voice box (larynx) are two small muscles/tissues.
- When air comes up from your lungs, the vocal folds come together to vibrate which creates the ‘buzz’ that soon after becomes your voice
- This vibration happens hundred of times per second and even faster for a higher pitch
- When you go up in pitch, your vocal folds lengthen and get thinner.
- When you go down in pitch, your vocal folds get shorter and thicker.
- We want the muscles in and around the voice box to be ready and flexible to help with this lengthening and shortening so we aren’t monotone speakers.
- The goal for our vocal folds is ease and mobility. When we increase tension in our throat, this becomes more challenging.
- Resonance: The filter and amplifier
- We use the throat, mouth and nose as resonators to shape what the voice sounds like.
- Resonance is the reason two people can speak at the same pitch but sound completely different.
- Articulation: The sound shaper
- Your tongue, teeth, jaw, lips and soft palate (squishy back top of your mouth) shape sounds into words.
- Articulation is important to ensure you’re saying sounds and words correctly however, it’s also important for your vocal quality
- If you aren’t moving your articulators enough, maybe because you’re tired or speaking too quickly, you may need even more effort to sound clear.
Vocal Effort and Fatigue
When the above mechanisms aren’t working properly, the body’s response is often to start overworking other areas in order to keep your message clear which shows up as extra effort, tension and fatigue.
For example:
- Breath is shallow and more so in your chest → neck and shoulder tension increases → voice feels effortful and throat feels tight
- When running out of air → throat squeezes → voice gets strained, drops in volume and pitch and vocal fry occurs
- When articulation is reduced → chest and throat try to push the voice out → voice gets strained and you get fatigued
- Throat dryness or irritation → more throat clearing → swelling and sensitivity increases → voice becomes raspier and requires more effort and often perpetual throat clearing
- Feeling stressed → increase breath holding and taking shorter breaths → reduced resonance, voice is thinner and harsher, increased throat and chest tension → often resulting in feeling more stress
- Slouching while speaking → less breath capacity → more throat work to maintain volume and clarity
- Reduced pauses → fewer opportunities for breath → increased effort across conversation → fatigued by end of day or even by end of conversation or presentation
Adding more tension, pushing more air, or forcing volume and clarity can work short-term, but over time it often leads to fatigue, tightness, and a voice that feels less reliable. This is often why you can start your day with a supportive voice but aren’t able to sustain the same quality with the same amount of effort to the end of the day.
The goal isn’t to “try harder,” in getting the voice out, but rather to effectively use each of these systems and coordinate them with each other so your voice can be clear, steady, and feel easy again.
That Tight Throat Feeling
A “tight throat” sensation is often a sign that your voice system is working too hard. A common pattern behind this effort is primary muscle tension dysphonia (MTD). MTD is the umbrella term used to describe a change in voice due to muscle tightness and overactivity in and around the voice box (larynx). Here, tension is the main issue and not based on a structural problem.
MTD isn’t something you catch like a cold, or something that’s genetic, but rather it’s a learned behaviour or compensatory pattern where the muscles are doing too much work to get the voice out. This results in needing more effort to speak and changes the voice to be more raspy, weak, hoarse, breathy, thin, strained, nasal, muffled, monotone, shaky or at a pitch that seems too high or too low.
In addition to poor coordination of the above systems, primary MTD, can be triggered by external factors such as:
Increased vocal demand: Speaking for longer periods of time, speaking at a louder volume, overuse of voice such as back to back meetings
- Stress and high-stakes speaking tasks: Speaking to executives, stakeholders, doing an interview, advocating for yourself, uncertain of content, lack of confidence
- Irritation: allergies, GERD (reflux), post-nasal drip, dry air, smoke
- Following an illness such as laryngitis, upper respiratory illness, bronchitis or asthma
MTD may be experienced as:
- Voice is fine in the morning but worse by end of the day
- Voice cuts out mid-sentence
- It’s effortful to speak; I get tired when speaking
- Increased need to clear my throat
- Voice or tension gets worse in loud environments
- Throat feels dry or sore
- Challenges projecting voice without strain
- Feels like there’s a lump in my throat
- Voice doesn’t match how I feel such as sounding tired or bored when I’m not
The thing about primary MTD is that often the muscle tension and ineffective voicing patterns continue even when the trigger is gone. The good thing about MTD is that it doesn’t have to be a long term problem and these triggers don’t necessarily mean MTD will inevitably happen. There are several ways to support your voice and reduce, if not completely avoid, or get rid of muscle tension dysphonia.
Supporting the Voice
Start with the four areas of voicing: improve breath quality and quantity, shift resonance forward so the volume isn’t coming from your throat, move your articulators more, and relax your throat, shoulders, upper back, chest and neck. Additional supports include staying hydrated, finding alternatives to throat clearing, considering environmental changes, pausing intentionally while speaking, managing stress, plan voice breaks throughout the day, doing vocal warm-ups and cool-down and vocal stretches and massages throughout the day.
Quick Vocal Warm-up/Reset
- Unbrace: Roll your shoulders back and down, loosen you jaw
- Triangle Breathing: Inhale through your mouth for 3 full seconds, hold for 3 seconds, exhale for 3 seconds out your mouth x3
- This not only helps facilitate calmness but also prompts you to use your breath effectively in upcoming discussions.
- Yawn-sigh: Yawn as your naturally would but end it was an audible sigh x3
Example: https://www.youtube.com/watch?v=A4_L6tfKnY0- This helps reset and relax the back of your throat and vocal folds, especially if they’re already feeling tight
- Hum: Say a soft ‘mmm’ x3, then a soft ‘mmm-yeah’ x3
- This helps bring resonance forward out of the throat
- Pitch Glides: At a comfortable pitch say ‘ing’ as you slide pitch up and then down x3
- This lengthens and shortens your vocal folds as if warming them up
- Enunciation: Say “Pah Tah Kah” while overdoing your mouth movement x5
- This warms up your articulators and muscles while prompting you to move your mouth more while speaking
Conclusion
Your voice is a uniquely powerful tool used to express yourself, lead, advocate, teach and connect. Why not use it in the healthiest and most supportive way possible? When you take back control of your voice, you don’t just improve how you sound – you reclaim calmness, confidence and clarity. It’s time to show up as your best self, with your best voice forward.