# Scream-Measuring Machines The Growl-O-Meter Puts Your Heavy Metal Growls to the Test By Laura McQuarrie | Published 2014-08-21 | Autos Source: Trend Hunter, https://www.trendhunter.com/trends/heavy-metal-growl References: [adsoftheworld](http://adsoftheworld.com/media/ambient/lej_et_lig_the_growlometer) & [lejetlig.dk](http://www.lejetlig.dk/) Bellowing a heavy metal growl can put a lot of strain on your [vocal chords](https://www.trendhunter.com/trends/carnivore-audio), but this is not something that concerns a lot of metal fans, especially the ones who tested themselves with the Growl-O-Meter. The meter was set up between "the most badass car rental company," Lej Et Lig, and the Copenhell [metal festival](https://www.trendhunter.com/trends/worlds-heaviest-billboard), challenging metal fans to put their voices to the test to get discounted car rentals and other prizes. As a result of having the Growl-O-Meter at the festival, over 500 people lost their voices trying to get the meter to light up all the way to the top. The [deepest and loudest growls](https://www.trendhunter.com/trends/mic-audio-level) were received best by the meter, showing off fans that could give the festival performers a run for their money. ## Trend Insights (Trend Hunter) - Score: 2.8/10 - Popularity: 12% | Activity: 65% | Freshness: 8% - Audience gender: 90% men, 10% women - Primary generations: Millennial - Top markets: Europe ## Categories [Trend Hunter](https://www.trendhunter.com/trends) > [Autos](https://www.trendhunter.com/autos) ## Key Themes ### Why This Trend Is Growing - **Vocal Performance Measurement:** The development of devices like the Growl-O-Meter highlights the trend of measuring and quantifying vocal performance in various contexts. - **Social Media Challenges:** The popularity of challenges like testing vocal abilities with the Growl-O-Meter reflects the trend of social media-driven engagement and participation. - **Health Consciousness in Music:** The emphasis on the strain heavy metal growling puts on vocal chords suggests a trend towards health-consciousness in the music industry, leading to potential opportunities for vocal health and performance-related innovations. ### Industries Being Reshaped - **Music Technology:** Developing advanced vocal performance measurement tools, like the Growl-O-Meter, can disrupt the music technology industry by providing musicians and vocalists with new ways to monitor and improve their performances. - **Event Management:** Integrating interactive challenges, such as vocal performance tests, into events like metal festivals presents opportunities for event management companies to enhance attendee engagement and create unique experiences. - **Wellness and Fitness:** The awareness of vocal strain in metal music opens up possibilities for wellness and fitness industries to create products and services that cater to the specific vocal health needs of musicians and heavy metal enthusiasts. ## Related on Trend Hunter - [Sound-Dectecting AR Mirrors](https://www.trendhunter.com/trends/venting-machine.md) - [Beer-Dispensing Guitar Machines](https://www.trendhunter.com/trends/slay-to-pay.md) - [Speech-Improving Vocal Tools](https://www.trendhunter.com/trends/speech-meter.md) - [Audaciously Bold Effects Pedals](https://www.trendhunter.com/trends/effects-pedals.md) - [Adjustable Guitar Equalizers](https://www.trendhunter.com/trends/mechanical-guitar-equalizer.md) - [Physically Challenging Boxing Projectors](https://www.trendhunter.com/trends/growl.md) - [AI Beer Vending Machines](https://www.trendhunter.com/trends/beer-vending-machines.md) - [Sub-Octave Effects Pedals](https://www.trendhunter.com/trends/suboctave-effects-pedal.md) - [Ludicrously Loud Bluetooth Speakers](https://www.trendhunter.com/trends/loud-bluetooth-speaker.md)