Technological Evolution Enhances Sound Experience at Hollywood Bowl

Revolutionizing Live Sound

Sound engineers face numerous challenges on live concert stages. They constantly battle against noise interference. A kick drum might bleed into a vocal microphone. A guitar amp may disrupt a monitor feed. Dropped microphones can cause vocals to vanish mid-performance. Traditionally, solutions included equalization, compression, volume adjustments, and manual intervention.

This summer, the Hollywood Bowl introduces a new approach. Source Intelligence, developed by L’Acoustics, listens to every microphone in real time. It isolates a vocalist’s voice with unmatched precision. This system achieves 40 decibels of unwanted noise rejection. L’Acoustics claims this is 20 decibels better than current alternatives.

Fred Vogler, the principal sound designer since 2003, finds the effect astonishing. “In the past, you’d get the guitar amp or drums in that mic,” he noted. “Now, you hear just the vocal.”

Innovative Audio Overhaul

The Hollywood Bowl is undergoing its most ambitious audio upgrade in a generation. Key components include the new flagship L Series line array system and a groundbreaking immersive surround installation.

Line Array System Overhaul

The L1, L’Acoustics’ new line array, represents a significant shift in design. A line array typically involves multiple speakers suspended vertically. This allows precise sound shaping across large spaces. The L1 mitigates physical gaps between speakers by integrating them into a modified cabinet design. This system is 30% smaller and more powerful than its K Series predecessor.

For the Bowl, reducing noise variance is crucial. In the past, there was a six to nine-decibel variance between the closest and farthest seats. The L1 reduces that gap to three decibels. This means a consistent audio experience regardless of seating.

AI on the Mix

Source Intelligence uses machine learning to isolate vocals amidst live sound chaos. Originally, this technology was a tool for DJs to separate stereo track components. L’Acoustics adapted it for live stage use. This innovation allows engineers to emphasize vocals without increasing unwanted noise.

The system is being used by major artists like Harry Styles, The Weeknd, and Bruno Mars. Their engineers have noted substantial improvements in the overall mix quality.

Embracing Immersive Audio

The season’s third component is an immersive sound system — L’Acoustics’ L-ISA platform. This system wraps around the entire amphitheater, offering spatial audio.

L-ISA has two modes: a room engine simulating enclosed spaces and a surround object mode that spatializes sounds. Scott Sugden describes it as the most extensive immersive sound deployment worldwide.

Fred Vogler has been testing the system. He aims for subtlety: “We don’t want it drawing attention. We want it to feel missed if off.”

Enduring Legacy and Future Outlook

Established in 1922, the Hollywood Bowl has undergone various renovations. The latest update continues its tradition of prioritizing sound quality. Partnered with L’Acoustics since 2004, the Bowl remains at the forefront of audio technology.

This comprehensive upgrade — including the L Series, Source Intelligence, and L-ISA — positions the Bowl at the cutting edge of live music technology. Artists performing at the Bowl rely solely on the house system, highlighting confidence in its capabilities. As the music world evolves, the Bowl continues to prioritize intelligent, immersive sound experiences.