To create an acoustic wall for a music lecture hall, one should consider the following steps:

Assessment of Acoustic Needs: Evaluate the specific acoustic requirements of the space, considering the types of music and activities that will take place.

Selection of Acoustic Materials: Choose appropriate sound-absorbing materials that can handle the frequency ranges of the music. Options may include acoustic foam panels, fabric-wrapped fiberglass panels, or perforated wood panels with sound-absorbing backing.

Wall Construction: Install a framework on the existing wall to create an air gap, which can enhance sound absorption. Attach the chosen acoustic panels to this framework.

Placement and Coverage: Strategically place the panels to cover significant reflection points. It's often beneficial to cover a substantial portion of the wall surface to achieve optimal sound absorption.

Diffusion Elements: Incorporate diffusive elements to scatter sound waves, reducing the potential for echoes and standing waves without overly deadening the room.

Professional Installation: Ensure that the installation is carried out by professionals who can guarantee that the panels are securely attached and properly spaced for maximum acoustic performance.

Acoustic Testing: After installation, conduct acoustic testing to measure the effectiveness of the sound absorption and make any necessary adjustments.

By following these steps, you can create an acoustic wall that enhances the sound quality within a music lecture hall, providing an environment conducive to both teaching and musical performance.