Berlin Philharmonie: Hans Scharoun's Acoustic Architecture That Changed Concert Hall Design

The Hall That Invented a New Way to Listen to Music

On 15 October 1963, the Berlin Philharmonie opened with a concert by the Berlin Philharmonic Orchestra under Herbert von Karajan. It was the first concert hall in history to place the orchestra at the centre of the audience. The measured RT60 was 1.9 seconds at 500 Hz — within the optimal range for orchestral music — but the real revolution was not the reverberation time. It was the geometry. Hans Scharoun's vineyard layout destroyed the 200-year-old assumption that a concert audience must sit facing the stage in a rectangular room, and every major concert hall built since has had to reckon with his invention.

The Berlin Philharmonie seats 2,440 in an asymmetric pentagonal plan. Its acoustic designer was Lothar Cremer, one of the founders of modern room acoustics. Its impact on concert hall design is comparable to what Le Corbusier's Villa Savoie did for residential architecture: it did not merely offer an alternative — it redefined the terms of the discussion.

The Problem Scharoun Set Out to Solve

By the late 1950s, the concert hall was a mature building type with well-established conventions. The dominant form was the rectangular shoebox — exemplified by the Vienna Musikvereinssaal (1870), the Amsterdam Concertgebouw (1888), and the Boston Symphony Hall (1900). These halls were acoustically excellent, with measured RT60 values of 2.0, 2.2, and 1.85 seconds respectively, and strong lateral energy fractions (LF > 0.20) generated naturally by their narrow side walls.

But the shoebox had a social limitation. In a 2,000-seat shoebox hall measuring 60 metres long by 20 metres wide, the last row is more than 40 metres from the stage. Audience members in the rear stalls and upper galleries are visually and psychologically remote from the performers. The concert experience in the back rows of a shoebox hall is fundamentally different from the experience in the front — more distant, less engaged, more like watching through a window than participating in an event.

Scharoun, whose architectural philosophy emphasized the social dimension of public spaces, wanted to create a hall where every listener felt close to the music. His solution was radical: place the orchestra in the middle of the room and surround it with audience seating on all sides, arranged in intimate terraces that rose from the stage level. No seat would be more than 34 metres from the conductor. The orchestra would be surrounded by its audience rather than separated from them.

The architectural concept was brilliant. The acoustic challenge it created was enormous.

Lothar Cremer's Acoustic Design

Lothar Cremer was professor of technical acoustics at the Technische Universitat Berlin and co-author, with Helmut Muller, of the textbook Die wissenschaftlichen Grundlagen der Raumakustik (1978, published in English as Principles and Applications of Room Acoustics). He was one of the most rigorous room acousticians of his generation, and he understood immediately that Scharoun's vineyard layout posed acoustic problems that no existing theory could fully resolve.

The Lateral Reflection Problem

In a shoebox hall, strong lateral reflections arrive naturally from the side walls, which are close to the audience (typically 10 metres away on each side) and extend the full length of the hall. These reflections arrive within 15 to 30 milliseconds of the direct sound and are largely responsible for the subjective qualities of "warmth" and "envelopment" — measured objectively as the lateral energy fraction (LF) per ISO 3382-1:2009 §4.4.

In the Berlin Philharmonie, there are no continuous side walls. The audience sits in terraced blocks with low walls (approximately 1.0 to 1.5 metres high) separating the blocks. These terrace walls are too low to provide the strong lateral reflections that a shoebox side wall delivers. The ceiling is high (up to 22 metres above the stage) and tent-like in profile, meaning that ceiling reflections arrive late and from overhead rather than from the sides.

Cremer addressed this problem through three strategies:

Terrace geometry. The terrace walls were designed not as simple barriers but as reflective surfaces angled to redirect sound energy laterally toward adjacent seating blocks. The heights, angles, and surface treatments of the terrace walls were specified to maximize useful lateral reflections within the first 80 milliseconds.

Convex ceiling surfaces. The tent-like ceiling is composed of convex panels that scatter reflected sound across a wide range of angles rather than focusing it at specific points. This diffuse ceiling reflection complements the lateral energy from the terrace walls, producing a reverberant field that, while different from a shoebox, is rich and enveloping.

Stage reflectors. Overhead reflectors above the stage direct early sound energy toward the nearest audience terraces, providing the initial dose of reflected energy that establishes the room's acoustic character within the critical first 20 to 50 milliseconds.

Worked Example: Volume and Absorption

The Berlin Philharmonie has an internal volume of approximately 21,000 cubic metres for 2,440 seats, giving a volume-per-seat ratio of 8.6 cubic metres. Applying the Sabine equation (ISO 3382-2:2008 §A.1):

T = 0.161 × V / A

For V = 21,000 m³ and T = 1.9 s:

A = 0.161 × 21,000 / 1.9 = 1,779 m²

The 2,440 occupied seats contribute approximately 0.55 m² of absorption per seat-person, totalling 1,342 m². The remaining 437 m² of absorption comes from the stage, the convex ceiling panels (which have absorption coefficients of approximately 0.05 to 0.10 at mid-frequencies), the terrace walls, air absorption, and the carpet on circulation aisles.

This absorption budget is tight. The ratio of audience absorption to total absorption is 1,342/1,779 = 75%, meaning that three-quarters of the hall's total absorption comes from the audience and seats. This is typical of concert halls and explains why the occupied and unoccupied RT60 values differ significantly — rehearsal RT60 is typically 0.3 to 0.5 seconds longer than concert RT60.

Measured Acoustic Parameters

The Berlin Philharmonie has been measured extensively over its six decades of operation. The following table summarises the key ISO 3382-1 parameters compared with the shoebox reference standard (Vienna Musikvereinssaal) and a later vineyard hall (Philharmonie de Paris).

What the Numbers Reveal

The Berlin Philharmonie's RT60 of 1.9 seconds is within the optimal range, and its sound has been praised by generations of musicians and critics. But the measurements reveal the compromises inherent in the first vineyard design:

EDT/RT60 ratio of 0.89. The EDT is 0.2 seconds shorter than the RT60, indicating that the early reflection pattern is inconsistent with the late reverberant field. In the best seats (terraces directly adjacent to the stage), the EDT is closer to the RT60. In the more distant terraces, particularly those behind the orchestra, the EDT drops further, producing a drier subjective impression. The Musikvereinssaal's ratio of 0.95 represents a more uniform acoustic experience across all seats.

Lateral fraction of 0.15 to 0.22. The lower end of this range (0.15) falls below the 0.20 threshold identified by Barron and Marshall as the minimum for satisfactory spatial impression. Seats in the centre of large terrace blocks, far from terrace walls, receive less lateral energy than seats near the edges. This non-uniformity is the fundamental limitation of the vineyard layout that subsequent halls have worked to overcome.

C80 range of -0.5 to +2.0 dB. The wide C80 range (2.5 dB span) indicates significant seat-to-seat variation in clarity. Seats behind the orchestra typically have higher C80 values (more clarity, less reverberance) because they receive less reflected energy from the stage. In a shoebox hall, the C80 variation is typically within a 2.0 dB span.

The Harold Marshall Connection

The acoustic success of the Berlin Philharmonie owes much to Harold Marshall, a young New Zealand acoustician who was conducting research at the Technische Universitat Berlin during the hall's design phase. Marshall's doctoral research, supervised by Cremer, focused on the role of lateral reflections in the perception of concert hall acoustics. His 1967 paper "A Note on the Importance of Room Cross-Section in Concert Halls" provided the first rigorous evidence that lateral early reflections — not just total reverberant energy — were critical to subjective acoustic quality.

Marshall's research showed that listeners preferred sound fields with strong lateral components over sound fields with equivalent total energy but predominantly frontal or overhead reflections. This finding explained why the narrow shoebox halls (which naturally produce strong lateral reflections from nearby side walls) were consistently rated higher than wider fan-shaped halls (which deliver more overhead and frontal energy).

For the Berlin Philharmonie, Marshall's work informed Cremer's design of the terrace walls as lateral reflectors. Without Marshall's insights, the terrace walls might have been treated as purely architectural elements — visual barriers and safety railings — rather than as acoustic reflecting surfaces. The decision to make the terrace walls reflective, angled, and acoustically significant was directly influenced by Marshall's research.

The On-Stage Acoustic Environment

One of Scharoun and Cremer's most significant innovations was the attention paid to the on-stage acoustic environment — the conditions under which the musicians themselves hear each other. In a traditional proscenium or shoebox hall, the orchestra is enclosed on three sides by a stage shell that reflects sound back to the performers, enabling them to hear colleagues across the ensemble. The stage shell is essentially a small room within the larger hall, and its acoustic properties are as carefully designed as those of the audience chamber.

In the Berlin Philharmonie, the orchestra sits on an open platform surrounded by audience on all sides. There is no traditional stage shell. The terrace walls surrounding the stage are low (1.0 to 1.5 metres), and the nearest audience members are only 3 to 5 metres from the outermost musicians. Without a stage shell, musicians were initially concerned that they would be unable to hear each other — a problem that would make ensemble playing extremely difficult.

Cremer addressed this with a combination of overhead reflectors above the stage and the terrace walls of the nearest audience blocks, which act as secondary reflectors. The overhead reflectors — large convex panels suspended approximately 8 metres above the stage — provide the early reflections (within 20 to 30 milliseconds) that allow musicians to hear each other's timing and intonation. The terrace walls provide additional lateral energy that supports the perception of ensemble blend.

The on-stage acoustic conditions were initially controversial. Some musicians found the openness disorienting, particularly brass and percussion players accustomed to the enclosed environment of a traditional stage shell. Over time, however, the Berlin Philharmonic Orchestra adapted to the unique acoustic signature of their hall, and several conductors — including Karajan, Abbado, and Rattle — praised the transparency and clarity of the on-stage sound.

The Reconstruction After 2008

On 20 May 2008, a fire broke out in the roof of the Berlin Philharmonie during renovation work, damaging approximately 4,000 square metres of the roof structure. The hall was closed for seven months for repairs. The reconstruction provided an opportunity to assess and, where necessary, improve the acoustic properties of surfaces that were being repaired or replaced.

The acoustic measurements taken after the reconstruction confirmed that the essential acoustic character of the hall had been preserved. RT60 at 500 Hz remained at 1.9 seconds, within the measurement uncertainty of the pre-fire values. The convex ceiling panels that had been damaged were replaced with panels of identical geometry and surface finish, ensuring continuity of the diffuse reflection pattern.

The fire incident highlighted the vulnerability of unique acoustic environments to physical damage. The Berlin Philharmonie's acoustic properties are embedded in the specific geometry and surface characteristics of its interior — they cannot be reproduced by specification alone but depend on the precise curvatures, angles, and material properties of thousands of individual surfaces. The loss of these surfaces, had the fire been more extensive, would have been an irreversible acoustic catastrophe.

The Legacy: Every Vineyard Hall Since

The Berlin Philharmonie proved that a non-rectangular concert hall could produce world-class acoustics. This proof-of-concept unleashed a generation of vineyard halls:

• Suntory Hall, Tokyo (1986) — Yasuhisa Toyota, 2,006 seats
• Meyerson Symphony Center, Dallas (1989) — Russell Johnson, 2,062 seats
• Walt Disney Concert Hall, Los Angeles (2003) — Yasuhisa Toyota, 2,265 seats
• Koncerthuset, Copenhagen (2009) — Nagata Acoustics, 1,800 seats
• Philharmonie de Paris (2015) — Yasuhisa Toyota, 2,400 seats
• Elbphilharmonie, Hamburg (2017) — Yasuhisa Toyota, 2,100 seats

Herbert von Karajan, who led the Berlin Philharmonic Orchestra from 1954 to 1989 and performed in the hall more than any other conductor, described the Philharmonie as "a hall where the musicians and the audience breathe together." This quality — intimacy, connection, shared experience — is the vineyard hall's greatest contribution to concert architecture, and it began in Berlin on 15 October 1963.

Further Reading

• Philharmonie de Paris: How Jean Nouvel Achieved Perfect RT60 — How Toyota refined vineyard acoustics for the 21st century
• Royal Festival Hall Acoustic History — A different British approach to concert hall design
• What Is RT60? — The fundamental parameter of room acoustics